Can you check the balance of other people's phone bills?

Brand model: Huawei p40pro, iPhone12 Pro; Pro system: emui 10. 1, IOs14; ;

1, I can't check other people's mobile phone balances, because these are personal privacy;

2. If the other party is an acquaintance or relative, log in the other party's mobile phone number in the mobile phone business hall software. You need to know the service password of the other party's mobile phone when logging in, and the other party's mobile phone can log in only after receiving the SMS verification code. When inquiring, the other party's mobile phone will receive a SMS reminder;

3. Log in to the corresponding online business hall, enter your mobile phone number and password, and you can check the phone bill balance after logging in.