Somehow, my mobile phone is a fake, but it still deducts money, has no function of spending money, and sometimes automatically sends text messages to ask.

This must be the problem of the shanzhai. There are many paid games and services built into the cottage, sometimes they will be charged when they are used, and some will automatically send text messages or surf the Internet. Therefore, it is best to turn off the Internet access function or short message function of the mobile phone when using the cottage phone, and it is also best to turn off the long-distance call function.