How to check the phone bill on Apple mobile phone?

China Unicom users:

Call for direct inquiry: Call 1111 on your mobile phone to inquire about the through train, which will directly tell you the telephone charges. Send

"hf" to 1111, and the phone bill balance will be informed by SMS.

China mobile users:

It's very convenient to dial the 18611 call charge through train. As long as it is connected, the system will prompt to send relevant short messages to the mobile phone.

send SMS to inquire, and send 11 to 186, and you can directly inquire about the phone bill balance.

China Telecom users:

Edit SMS 11 and send it to 11.

call 1 customer service or 11.