I put a Unicom 3G card and a mobile 2G card in a mobile phone, and suddenly I didn't receive any news today. You can surf the Internet, make a phone call or send a text message.

If you can't receive the SMS or verification code, you can try the operation according to the following steps:

1. Check whether the mailbox is full first. If it is full, please delete some information;

2. If it is still not received after deletion, you can change the machine or card to see if it is a hardware factor;

3. After eliminating the above reasons, you can try to test whether it can be received in other places to see if it is the reason for the weak local signal.

If the above problems do not exist, it may be related to the network function. It is recommended to contact local manual customer service to handle this problem.