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.