Knowledge Base
Expert articles on phone numbers. From scam prevention to number basics, find answers to your phone number questions.
One-Ring Scams - How They Work and How to Protect Yourself
Learn how one-ring scams work and the risks of calling back. Discover practical steps to avoid costly charges and where to seek help if you fall victim.
Bank Transfer Fraud - Latest Tactics and How to Protect Your Family
An in-depth look at the latest bank transfer fraud tactics in Japan. Covers impersonation scams, tax refund scams, fake billing, and concrete steps to protect your family.
Phone Scams Targeting Students - Tactics and Prevention
A guide to phone scams targeting university and vocational school students. Covers investment fraud, identity lending schemes, fake scholarships, and key warning signs.
How to Spot Investment Scam Phone Calls
Learn to identify investment scam phone calls. Covers unlisted stocks, cryptocurrency, FX trading, and other high-return schemes, with practical fraud prevention tips.
Tax Refund Scam Calls - How to Recognize and Respond
How to recognize phone scams that impersonate tax offices or municipal staff and use fake tax refunds as bait. Includes ATM-based fraud tactics and prevention tips.
Seasonal Trends in Phone Scams and How to Stay Ahead
Phone scam tactics shift with the seasons and current events. Learn the patterns by time of year and take proactive steps to protect yourself.
How to Report Phone Scams - A Complete Guide to Filing Reports
A comprehensive guide to reporting phone scam incidents. Covers where to file reports with police, consumer centers, and financial institutions, with step-by-step instructions.
Government Impersonation Scams - Latest Tactics and How to Spot Them
How scammers impersonate police, tax offices, and pension agencies. Learn the latest tactics, key facts to remember, and how to handle robocall scams.
How to Spot Cryptocurrency Scam Phone Calls
How to identify phone scams promoting cryptocurrency investments. Includes a checklist of red flags, legal context, and steps to take if you've been victimized.
AI Voice Clone Phone Scams - How They Work and How to Detect Them
AI voice cloning scams are surging. Learn how the technology works, review real-world cases, and master five verification steps to detect fake voices over the phone.
Why Phone Scams Thrive in Japan - Structural Factors in International Perspective
Japan loses 44.1 billion yen annually to phone fraud. This article analyzes the structural factors - an aging society, cash-based economy, and trust in landlines - through international comparison.
Why Voicemail Is the Feature Scammers Fear Most
Keeping voicemail on at all times is a powerful anti-fraud measure. Learn why scammers hate recordings, the police-recommended strategy of not answering, and carrier-specific setup instructions.
Why Phone Scammers Never Use Dialect - The Psychology of Voice Manipulation
Impersonation scammers almost universally speak standard Japanese. Learn why they avoid dialect, the voice manipulation techniques they use, and how to spot fakes by listening carefully.
How to Spot SMS Scam Messages - 5 Checkpoints Even Teens Can Use
Delivery failure notices, PayPay payment errors, Amazon account suspensions - scam messages hide among your SMS. Learn 5 easy ways to spot them.
What Is a One-Ring Call? What Happens If You Call Back? - The Basics
Your phone rings once and stops. If you call back, you might face expensive charges. Learn what one-ring calls are and how to handle them.
How to Protect Your Grandparents from Phone Scams
About 80% of phone fraud victims in Japan are seniors over 65. Learn concrete steps your family can take to protect them.
Side Hustle Scams - Phone Solicitation Patterns and How to Spot Them
Learn how scammers use phone calls to lure victims with promises like 'Earn 300,000 yen a month from your smartphone.' Covers info-product, MLM, and FX auto-trading scams, plus the red flags to check before signing up.
Disaster-Exploiting Phone Scams - Tactics and How to Prepare
Phone scams targeting donation drives, roof repairs, and insurance claims spike after earthquakes, floods, and typhoons. Learn the tactics, victim patterns, and the defenses to put in place before disaster strikes.
SNS-Linked Phone Scams - Latest Tactics
How scammers build trust on Instagram, X (Twitter), and LINE before switching to phone calls to push high-value contracts. Covers the latest patterns in dating apps, romance scams, and investment pitches.
How to Fight Nuisance Calls - From Call Blocking to Reporting
A comprehensive guide to fighting nuisance calls. Covers call blocking on smartphones and landlines, carrier blocking services, and how to report offenders - prioritized for maximum effectiveness.
How to Refuse Sales and Solicitation Calls
How to refuse sales and solicitation calls, backed by Japanese law. Covers your right to refuse under the Act on Specified Commercial Transactions, ready-to-use refusal scripts, and the cooling-off process.
How to Deal with Spam Calls from 050 Numbers
Why spam calls from 050 (IP phone) numbers are surging and what you can do about it. Covers how easy number acquisition is exploited, effective blocking methods, and tightening regulations.
How to Spot and Stop Robocalls
How robocalls work and how to identify them. Covers the VoIP-based auto-dialing technology behind them, common scam patterns, and effective countermeasures.
The Truth Behind Silent Calls and How to Handle Them
What causes silent calls and how to deal with them. Covers call center auto-dialers, occupancy checks, stalking, and the right response and reporting steps for each scenario.
How to Block International Spam Calls
Characteristics of international spam calls and one-ring scams, plus effective blocking methods by smartphone OS and carrier.
How to Use Spam Call Databases
How to use spam call databases to identify dangerous numbers before you answer. Compares service types and walks through effective setup steps.
How to Handle Nuisance Calls at Work and Build an Office Policy
Efficient ways to handle sales and solicitation calls to your office main line. Covers how to draft internal policies that reduce receptionist burden and implement organization-wide nuisance call defenses.
When Do Nuisance Calls Peak? - Trends and Countermeasures by Time and Day
When do nuisance calls hit hardest? Statistical analysis by day and time slot, plus efficient countermeasures tailored to peak hours.
Why the Same Number Keeps Calling - How Auto-Dialer Systems Work
How predictive dialers work, why they can place hundreds of calls per hour, why unanswered calls trigger retries, the truth behind silent calls, and how to stop auto-dialers.
Which Country Gets the Most Spam Calls? - A Global Ranking
Spam calls are a global problem. Which country tops the ranking, how do national countermeasures differ, and where does Japan stand? An international data comparison.
What Is a Withheld Number Call? Should You Answer? - A Beginner's Guide
Learn what withheld number calls are, whether you should answer them, and how to block them on iPhone and Android.
How to Block Nuisance Calls - Step-by-Step for iPhone and Android
Step-by-step instructions for blocking nuisance calls on iPhone and Android. From blocking specific numbers to silencing all unknown callers.
How to Handle Wrong Number Calls - Proper Response and Precautions
Someone calls asking for a person you don't know. Learn how to handle wrong number calls and spot scams disguised as wrong numbers.
Why Strangers Call You - 5 Ways Your Number Gets Out
Why do unknown businesses call you? Learn the 5 ways your phone number reaches strangers and how to prevent it.
How to Choose a Spam Call Blocker App - Free vs Paid Options Compared
There are many spam call blocker apps, but which one should you choose? Compare features, free vs paid, and privacy considerations.
How to Decline Sales Calls - Phrase Bank and Legal Grounds
A practical phrase bank for declining persistent sales calls without escalation. Learn how to invoke Article 17 of Japan's Specified Commercial Transactions Act and tailor your response by industry.
Call History Utilization - Safe Methods for Checking Records
How to check call history on iPhone and Android, plus how to safely investigate suspicious missed calls. Learn which numbers you should never call back, and how to back up and preserve records.
How Japanese Phone Numbers Work - From Area Codes to Mobile Numbers
A comprehensive guide to Japan's phone number system based on the Ministry of Internal Affairs numbering plan. Covers area code digit rules, mobile number band history, IP phone and special number structures.
How to Look Up Area Codes and Identify Regions
Learn how to identify a caller's region from the area code. Includes a list of major city codes, how digit lengths work, and safe ways to look up unknown numbers.
090, 080, and 070 Numbers - Differences and History
Explaining the differences between mobile numbers 090, 080, and 070. Covers the allocation history of each band, the PHS connection, and the outlook for the 060 band.
Free Dial vs. Navi Dial - Understanding the Difference
Explaining the cost differences between Free Dial (0120) and Navi Dial (0570), why unlimited calling plans do not cover Navi Dial, and how to save on call charges.
VoIP (IP Phone) - How It Works, Pros, and Cons
A guide to VoIP technology and what you need to know before adopting it. Covers differences from traditional landlines, 050 number limitations, and major service comparisons.
MNP (Number Portability) - How It Works and How to Switch
A guide to MNP and the one-stop switching process. Covers things to watch out for when switching carriers, the history of fee elimination, and MVNO switching strategies.
Emergency Numbers in Japan (110, 119, 118) - A Complete Guide
A guide to using Japan's emergency numbers 110, 119, and 118 correctly. Covers what information to provide when calling and how to call from a mobile phone.
The History of Phone Number Digit Lengths in Japan
Tracing the historical evolution of Japanese phone number digit lengths and the measures taken to address number exhaustion.
Guide to Japan's Country Code +81
How to use Japan's country code +81 correctly, number conversion rules for international calls, and tips for reducing call costs.
Why Phone Numbers Start with Zero - The Design Philosophy Behind the Numbering System
Why Japanese phone numbers begin with 0, explained through the history of telephone exchanges and numbering plans. From the era of dial pulses to modern IP networks.
Why Emergency Numbers Differ Around the World
110, 911, 999, 112 - why emergency numbers vary by country. Exploring the historical and technical reasons, plus a list of numbers for travelers.
Where Do Canceled Phone Numbers Go - How Number Recycling Works
When you cancel a mobile phone, the number is eventually reassigned. Learn how number recycling works, the dormancy period, and how to handle calls for the previous owner.
Phone Numbers That Vanished from Japan - The End of Pagers, PHS, and Dial Q2
The history behind discontinued number bands including 020 (pagers), 070 (PHS era), and 0990 (Dial Q2). Reading Japan's telecom history through number band evolution.
Who Holds Phone Number '1' - The World of Low Numbers
Who uses numbers like 03-xxxx-0001? Exploring how phone numbers are allocated, the reality behind low numbers, and the urban legends surrounding them.
What the First Digits of a Phone Number Tell You - 090, 080, 050, 03 Explained
Just by looking at the first 2-4 digits of a phone number, you can tell if it's a mobile, landline, or special service. Learn to read number prefixes.
LINE Calls vs Regular Phone Calls - How They Differ and When to Use Each
LINE calls are free, regular calls cost money. But the differences go beyond price. Compare voice quality, emergency calling, and more.
How to Save on Phone Call Costs - Unlimited Plans, LINE, and 0570 Pitfalls
Think your unlimited plan covers everything? 0570 and international calls are excluded. Learn how call charges work and how to save.
What to Do When You Change Your Phone Number - A Checklist to Avoid Missing Contacts
Changed your phone number? There are more people and services to notify than you think. Use this checklist to avoid missing anyone.
How to Make Phone Calls During Disasters - Using the 171 Message Dial
During earthquakes and typhoons, phone lines get congested. Learn how to use Japan's 171 Disaster Message Dial to check on family.
What Is a SIM Card? - The Tiny Card Inside Your Smartphone
The SIM card in your phone is like an ID card for your phone number. Without it, you can't make calls or use mobile data.
What Does +81 Mean? - The Mystery Number on Your Phone Explained
Confused by '+81 90-XXXX-XXXX' in your call history? +81 is Japan's country code. Learn why it appears and how to handle these numbers.
Navi Dial (0570) Pricing Structure Fully Explained
Why Navi Dial (0570) calls are expensive, how charges differ between landlines and mobile phones, why unlimited calling plans don't cover them, and how to find alternative numbers.
Phone Number Systems Around the World - A Comparative Guide
Compare the phone number systems of the US, UK, China, India, and other major countries with Japan. Learn the differences in country codes, digit counts, and area-code conventions, plus international dialing rules.
How Local Exchange Codes Work in Japan
Understand the role of the local exchange code that follows the area code in Japanese phone numbers. Learn how it pinpoints sub-regions and exchange offices, and the history behind varying digit counts.
How to Handle Anonymous Calls - A Complete Guide to Staying Safe
A thorough guide to handling anonymous calls safely. Covers call-blocking settings by carrier, how to report to police, and measures to protect elderly family members.
Protecting Your Phone Number - How to Prevent Number Leaks
Learn how to prevent your phone number from leaking. Covers SNS privacy settings, using secondary lines, defending against SIM swap attacks, and what to do if your number is exposed.
Caller ID Spoofing - How It Works and How to Spot It
Explains how caller ID spoofing works and why it is dangerous. Covers VoIP abuse tactics, how to detect spoofed numbers, and the STIR/SHAKEN authentication framework.
Risks of Phone-Based Two-Factor Authentication and Safer Alternatives
Explores the risks of SMS-based authentication, including SIM swap attacks and SS7 vulnerabilities. Covers migration to authenticator apps, security keys, and passkeys.
Keeping Children Safe - Smartphone and Phone Number Security for Kids
A guide to managing phone number safety when giving children smartphones. Covers filtering settings, age-appropriate measures, and how to create a family smartphone agreement.
Legal Rules and Practical Uses of Call Recording
A systematic guide to the legal rules of call recording. Covers the legality of secret recording in Japan, business compliance obligations, and considerations for international calls.
How to Deal with Stalker Phone Harassment
How to handle persistent phone harassment from stalkers. Covers evidence preservation, police reporting procedures, and legal protection under Japan's Anti-Stalking Act.
What to Do When Your Phone Number Is Exposed in a Data Breach
What to do when your phone number is exposed in a corporate data breach. Covers how to check for leaks, switching from SMS authentication, and pursuing damage claims.
Complete Guide to Phone Privacy Settings on iOS and Android
A comprehensive guide to phone privacy settings on iPhone and Android. Covers call blocking, app permission management, and configuring children's devices.
Vanishing from the Phone Book - Why Japan Discontinued Its Residential Directory
NTT's Hello Page residential phone directory ended publication in 2023. This article explores why the directory - once delivered to every household - was discontinued, tracing the shift in privacy awareness and the evolution of telecommunications.
How Your Phone Number Reveals Your Identity - What Can Be Traced from a Number
Explains the range of personal information that can be inferred from a phone number. Covers how region, carrier, and contract period are identified, reverse lookup mechanisms, SNS account linking risks, and practical steps to protect your identity.
Does the Caller Know You Blocked Them? - How Call Rejection Works
Explains what callers hear when blocked by each Japanese carrier, the difference between device-level and carrier-level blocking, and when call rejection is detectable versus undetectable.
What Comes Up When You Google Your Phone Number - A Self-Check Guide
Have you ever Googled your own phone number? It may be published in unexpected places. Learn how to perform a self-check and the steps to request removal if your number is found.
What to Do When an Unknown Number Calls - A Guide for First-Time Smartphone Users
Getting your first smartphone and receiving calls from unknown numbers can be scary. Learn the basics of what to do.
Can Your Phone Number Reveal Your Identity? - How Personal Info Leaks Through Numbers
Can someone find your name and address just from your phone number? Learn how personal information can leak through phone numbers and how to protect yourself.
How to Share Your Phone Number Safely - Number Management in the Social Media Age
Sharing your phone number with friends is normal, but you can't control how far it spreads. Learn the rules for sharing your number safely.
How to Manage Your Smartphone Contacts Safely - Preventing Data Leaks
Your phone contacts contain friends' and family's numbers. Review app permissions and cloud sync settings to protect this valuable data.
What to Do First When You Lose Your Smartphone
Lost your phone? Follow these prioritized steps to protect your phone number and personal data.
Risks of Linking Your Phone Number to SNS Accounts
Risks of linking your phone number to LINE, Instagram, X (Twitter), and other SNS platforms. Learn how numbers can identify accounts and how to minimize the linkage.
Daily Habits to Prevent Phone Number Leaks
Practical countermeasures by leak channel. Review daily behaviors like web form entries, business card handling, and SNS settings to minimize unnecessary number exposure.
How to Choose the Right Business Phone Number
Compare landlines, IP phones, and toll-free numbers to find the best business phone number for your industry.
Benefits and ROI of Implementing a Toll-Free Number
Learn how implementing a toll-free (0120) number boosts inquiries and customer satisfaction, with a practical guide to calculating ROI.
Improving Phone Service Quality - Tips for Higher Customer Satisfaction
Practical tips for improving phone service quality. Covers first impressions, active listening, complaint handling, and organizational quality management.
Virtual Phone Numbers - The New Standard for the Remote Work Era
How virtual phone numbers work and how to use them. Covers remote work benefits, key service comparison points, and implementation tips.
How to Choose and Use a Phone Answering Service
A thorough guide to phone answering service types, pricing models, and selection criteria. Includes industry-specific use cases and ROI analysis for sole proprietors to SMEs.
The Power of Memorable Phone Numbers - How Easy-to-Remember Numbers Transform Business
0120-444-444, 0570-00-1010. Explore how wordplay and memorable phone numbers impact business, analyzed through cognitive psychology and marketing perspectives.
Why That Hold Music? The Psychology and Business Impact of Hold Music
From the history of hold music to its psychological effects and how companies choose it. Covers the risks of silent holds and the branding power of custom hold music.
Why More Companies Are Dropping Their Main Phone Number
The trend of eliminating main phone numbers is accelerating, led by IT companies. Covers the true cost of phone support, the shift to chat, credibility risks, and industry-specific decision criteria.
Do You Know the Difference Between 0120 and 0800? Behind the Scenes of Toll-Free Numbers
Both are free-to-call numbers, but 0120 and 0800 have surprising differences. Learn about their history, why companies choose one over the other, and what consumers should know.
How to Make a Restaurant Reservation by Phone - A Step-by-Step Script
Making a phone reservation at a restaurant or salon can be nerve-wracking. Here's a step-by-step script you can follow word for word.
How to Answer the Phone at Your Part-Time Job - A Beginner's Manual
Nervous about answering the phone at work? Learn how to greet callers, transfer calls, and take messages like a pro.
Remote Work Phone Etiquette and Environment Setup
Common pitfalls and solutions for handling business calls while working from home. Covers ambient noise, family co-living concerns, and separating company and personal numbers.
Choosing Corporate Mobile Phones and Managing Costs
How to choose corporate mobile phones from a practical standpoint. Compares carrier plans, scale benefits for multiple lines, BYOD trade-offs, and device selection criteria.
Learning from Phone Scam Cases - Real Tactics and Lessons
A detailed look at real phone scam cases including impersonation scams, tax refund fraud, and bogus billing. We analyze the psychological traps victims fell into and extract practical lessons from recurring patterns.
Investment Scam Phone Solicitations - Sophisticated Tactics and How to Spot Them
An in-depth look at sophisticated phone-based investment scams involving unlisted stocks, cryptocurrency, and FX trading. Learn the typical sales pitches scammers use and the checkpoints to identify fraud.
Delivery Scam Calls - How They Work and How to Protect Yourself
An overview of scams using fake delivery notification SMS messages and phone calls. Learn how fraudsters steal personal information through bogus delivery notices and the specific steps you can take to stay safe.
The Psychological Mechanisms Behind Why Seniors Fall for Phone Scams
An analysis of the psychological mechanisms that make seniors vulnerable to phone scams, including cognitive biases, obedience to authority, and impaired judgment under panic. Practical psychological support strategies for families are also covered.
The Reality of Fake Delivery SMS Phishing Scams
Real cases of SMS phishing (smishing) scams disguised as delivery missed-notifications. Covers tactics for redirecting victims to fake sites, patterns of personal data theft, and what to do if you become a victim.
Why Phone Scam 'Receivers' Get Caught - The Reality of Low-Level Operatives
The majority of arrests in special fraud cases involve low-level operatives known as 'receivers.' Why are they so easily caught, who gets recruited, and how does the disposable structure of criminal organizations work?
Why Phone Scam Victims Could Not Tell Anyone
An analysis of the psychological mechanisms that silence phone scam victims. Covers shame, self-blame, cognitive dissonance, reasons for not telling family, low awareness of consultation services, and the reality of underreporting.
Surprising Traits Shared by Phone Scam Victims - 'It Won't Happen to Me' Is the Biggest Risk
Phone scam victims are not just people with poor judgment. In fact, those most convinced they would never be deceived are at the greatest risk. This article reveals the surprising psychological traits shared by victims.
40 Minutes on the Phone with a Scammer - One Man's Account of Not Being Fooled
The account of a man who continued talking with a scammer for 40 minutes after realizing it was fraud. A chronological reconstruction of the scammer's tactics, the flow of conversation, and the exact moment he knew something was wrong.
Who Are Phone Scam Criminals? - The Reality of Fraud Ring Members
Who makes scam phone calls? Young people recruited through 'high-paying job' ads on social media often end up as criminals. Learn the harsh reality.
Why People Fall for Phone Scams - 4 Psychological Tricks Scammers Exploit
People who think 'I'd never fall for a scam' are actually more vulnerable. Understanding the psychological tricks scammers use makes you harder to fool.
Where Does Phone Scam Money Go? - Following the Criminal Cash Flow
Where does the money from phone scams end up? From ATM withdrawals to cryptocurrency conversion, follow the criminal cash flow.
Phone Scams Targeting Freelancers and Sole Proprietors
Real cases of phone scams targeting freelancers and sole proprietors in Japan. Covers fake SEO services, tax-audit impersonation, fake unpaid invoice tactics, and abuse of e-contract systems.
How to Avoid Secondary Phone Scams
How scammers target victims of previous scams. Covers fake refund schemes, fake recovery agents, and fake attorneys, with practical guidance on preventing re-victimization.
Where and How to Report Nuisance Calls in Japan
A comprehensive guide to reporting nuisance calls to the police, consumer affairs centers, the Ministry of Internal Affairs and Communications, and mobile carriers. Learn the best reporting channel for each situation and what to prepare.
How to Preserve Evidence of Phone Harassment
Learn how to document phone harassment in a legally admissible way - call recordings, call history screenshots, incident logs, and more.
Legal Remedies Against Stalker Phone Calls in Japan
An overview of the Anti-Stalking Act's applicability, the procedures for warnings and restraining orders, and how to apply for protection orders. A comprehensive guide to the legal tools available against phone-based stalking.
Your Rights Under Japan's Specified Commercial Transactions Act - Phone Sales Edition
An explanation of the regulations governing telemarketing under Japan's Specified Commercial Transactions Act. Covers the ban on re-solicitation, cooling-off rights, prohibition of misrepresentation, and how to exercise your consumer rights.
Police Consultation Guide for Phone Fraud Victims
How to use the #9110 police consultation hotline, write a crime report, and leverage cybercrime consultation desks. A step-by-step guide to reporting phone fraud to the police.
Suing for Nuisance Call Damages - How to Use Small Claims Court
How to file a small claims lawsuit for damages caused by persistent nuisance calls or illegal telemarketing. Covers the procedure, required documents, costs, and tips for winning.
Can You Record and Publish Nuisance Calls? - The Legal Gray Zone of Call Recording
The legality of call recording in Japan, the admissibility of recordings as evidence, the risks of publishing recordings on social media (defamation and privacy violations), and the boundaries of permissible recording.
Can You Identify an Anonymous Caller? - Legal Options and Technical Limits
Want to find out who keeps calling from a withheld number? This article sorts out what you can do on your own, what the police can do, and what is technically impossible.
How Much Can You Get for Suing a Nuisance Caller? - Compensation Benchmarks
How much compensation can you expect from suing a persistent nuisance caller? Benchmarks from past court decisions, litigation costs, cost-effectiveness, and alternative remedies explained.
Where to Get Help If You Think You've Been Scammed
Shared personal info with a suspicious caller or sent money? Here's a complete list of free consultation services you can contact.
Stopping Nuisance Calls With Certified Mail
How to use Japanese certified mail (naiyou shoumei) to stop persistent sales or stalking calls. Includes templates, how to identify recipients, effectiveness, and limitations.
How to Consult a Lawyer About Phone Harassment
How to consult an attorney about phone-based damage (fraud, stalking, persistent sales). Covers free consultation channels, pre-meeting preparation, fee benchmarks, and what happens after retainer.
Landline Nuisance Call Protection Setup Guide
Compare nuisance call protection services from NTT, KDDI, and SoftBank - setup procedures, pricing, and how to build a multi-layered defense system for your landline.
Guide to Migrating to Hikari Denwa (Fiber Optic Phone)
A comprehensive guide to migrating from analog lines to Hikari Denwa - step-by-step procedures, cost comparisons, number portability conditions, and what to expect during installation.
The Complete Guide to Caller ID Display
Everything you need to know about Caller ID Display - how it works, setup instructions, combining it with anonymous call rejection, and advanced techniques for nuisance call prevention.
Should You Cancel Your Landline? - Comparing Cost, Security, and Alternatives
A thorough comparison of the costs and trade-offs of keeping versus canceling your landline. Covers security risks, alternative options, and a pre-cancellation checklist from a practical standpoint.
How to Choose and Set Up an Anti-Scam Phone
A guide to choosing anti-scam phones that protect against nuisance calls and phone fraud. Compares automatic warning messages, call recording, and spam auto-blocking features across major manufacturers, with setup instructions.
From the Black Rotary Phone to the Smartphone - 130 Years of Telephone Evolution
Tracing the evolution of telephones in Japan from the start of telephone exchange service in 1890 to the modern smartphone. Covers magneto phones, the iconic black rotary phone, push-button phones, cordless phones, and mobile phones.
Why Public Phones Have Not Disappeared - The Last Lifeline in Disasters
Usage has plummeted with the spread of mobile phones, yet public phones remain. The reason lies in their role as a communication lifeline during disasters. Covers installation requirements, free use during emergencies, and their value for children's safety.
Why Landline Call Rates Used to Depend on Distance - The History of Pricing
The technical reasons behind distance-based pricing, the 10-yen local call, expensive long-distance rates, the shift to flat-rate pricing through IP migration, and the history of NTT's rate revisions.
Where Did 'Moshi Moshi' Come From? - The Origin of Japan's Telephone Greeting
We say 'moshi moshi' reflexively when answering the phone. When and why did this unique greeting originate? Exploring its roots while comparing telephone greetings from around the world.
Voicemail Setup Guide - From Configuration to Checking Messages
Voicemail is your best ally against unknown callers. Learn how to set it up, check messages, and record a good greeting.
Afraid of Making Phone Calls? - Tips to Overcome Phone Anxiety
Many people feel anxious about making phone calls. Learn preparation tips, useful phrases, and techniques to overcome phone anxiety.
Phone Etiquette Basics - Essential Rules for Teens
Job applications, school calls, store inquiries - knowing phone etiquette makes a great impression. Learn the essential rules.
Essential English Phone Phrases - Handle Calls from Foreigners with Confidence
Don't panic when you receive a call in English. Learn essential phrases like 'Please hold' and 'Let me transfer you to someone who speaks English.'
Mobile vs Landline - Which Do You Really Need?
How to decide whether to drop your landline and rely solely on a smartphone, or keep both. Includes recommendations by household composition, occupation, and region, plus cost optimization for keeping both.
INS Net Discontinuation - Impact and Migration Guide
NTT's INS Net (ISDN) data service ended its migration to IP networks in January 2024, with some data communication features discontinued. Learn what businesses are affected, migration options, and key considerations.
How to Choose Senior-Friendly Phones
How to choose a phone for elderly family members. Covers large buttons, clear audio, security features, and operational simplicity - features and selection criteria tailored to seniors.
Answering Machine Phones - Comparison Guide
How to choose a phone with built-in answering machine. Compares recording time, message capacity, auto-response, and smartphone forwarding, with recommended models for home and sole proprietors.