What is the arbitrary deduction of telecom mobile phones?

First, go to the telecom business hall and ask for a phone bill to see how much it costs. There are generally two situations. One is that you have SP service in your mobile phone, which will cause inexplicable expenses during use. The other is that you use some charging items without knowing it, and some websites will also charge fees. First of all, you ask Telecom to shut down all the collection services for you. This is an old question. All three major operators provide this service and benefit from it, so they all have some well-known charges. If it's still like this after the phone is turned off, find the one who bought your mobile phone, provide the phone bill and let him dismantle the SP. It should be no problem.