1 'Check whether the account has phone charges, if the balance is insufficient, you need to recharge before use;
2. Confirm whether the Internet function of the mobile phone number card is normally opened;
3, confirm whether the mobile phone parameters have been set, such as you use Unicom 3G mobile phone, Unicom 3G mobile phone parameters set to: APN access point: 3gwap(case sensitive), user name, password is empty, gateway\/proxy address: 10.0.0.172, port number: 80;
4, check whether the USIM card is plugged in, if it is plugged in but still cannot be used, it is recommended that you go to the local Unicom's own business hall to check whether the USIM card is faulty, or change the card test;
5, check whether there is a problem with the mobile phone, it is recommended that you can change the machine test. If the above situation has not been solved, it is recommended that you contact the local manual customer service