I would like to ask why my mobile phone suddenly can't access the Internet. It is normal to make phone calls and send text messages.

Unicom card can't access the Internet for the following reasons:

1. The mobile phone card is not plugged in properly and the contact is poor;

2. No network signal can be found at this location or the network signal is unstable;

3. The mobile phone card, card slot or mobile phone terminal is damaged;

4. The status of the mobile phone card is abnormal (such as shutdown and account cancellation). );

5. Mobile phone terminal card slot 1 does not support Unicom network.

You can try to solve it in the following ways:

1. Restart the phone to test it;

2. You can search Unicom network again in another location;

3. Whether the mobile phone card has Internet access function;

4. Verify whether the mobile terminal supports the used carrier network.

If the above methods still can't solve this problem, you can suggest contacting the local Unicom customer service or consulting the official mobile phone customer service.