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Phone Number Basics

How to Save on Phone Call Costs - Unlimited Plans, LINE, and 0570 Pitfalls

About 1 min read

Call Charge Basics

Pay-per-use costs about 22 yen per 30 seconds. "5-minute unlimited" plans cover calls under 5 minutes. "Full unlimited" covers all domestic calls.

Numbers NOT Covered by Unlimited Plans

0570 (Navi Dial): charged per minute even with unlimited plans. International calls: charged separately. 0990 (premium rate): very expensive.

Saving Tips

Find non-0570 numbers on company websites. Use LINE/FaceTime for international calls. Check your bill regularly through your carrier's app.

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Frequently Asked Questions

Am I charged while on hold with a 0570 number?

Yes, you're charged for the entire duration including hold time. 30 minutes on hold costs about 900 yen. Look for non-0570 numbers on the company's website.

How do I check if I have an unlimited calling plan?

Check your carrier's app (My docomo, My au, My SoftBank) under contract details or calling options.

How much can I save with a 050 IP phone number?

Calls to landlines cost about 22 yen per 30 seconds from a mobile, but some 050 IP phone services charge only about 8 yen per 3 minutes. Great savings if you frequently call businesses.

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