After receiving the text message, the 4G network has been opened, but the 4G network is not displayed after restarting the mobile phone?

If you are a 2G/3G user, you need to meet the following conditions to use Unicom's 4G network normally:

1. Need to switch the machine again;

2. The local area needs the normal coverage of Unicom's 4G network;

3. You need to use a mobile phone that supports the 4G network and has turned on the 4G network function;

4. The required mobile phone card is already a USIM card (you can check whether "USIM" is printed on the back of the mobile phone card; It is a "SIM" card, which needs to be replaced by a "USIM" card to use the 4G network);

If you can't use Unicom's 4G network if the above conditions are met, it is suggested that you can replace your mobile phone card, or take your mobile phone and mobile phone card to the local Unicom's own business hall for testing. If you need to enjoy the 4G high-speed network, it will be more affordable to upgrade the 4G package. For details, please click on the China Unicom Dual 4G Zone.