Talk:Japan/@comment-113.154.22.66-20150725112210

b-mobile loses signals sometimes. You shouldn't buy into "b-mobile uses  NTT Docomo’s network. " One time one of my sims suddenly became completely dead after a short use.

What's worse the company charges you 5,000 yen when you send your defective sim back to it and it cannot conclude that the sim was defective from the beginning. From this company policy, I hope you can get a rough idea of how the customer service will treat you. I got burned. I wouldn't recommend it if you cannot take this kind of risk.