Mobile phones can't access the Internet after going abroad. What is the reason?

If Unicom's mobile phone card is unable to access the Internet overseas, there may be 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. The international long-distance and roaming functions of the mobile phone card are not enabled;

You can try to solve it in the following ways:

1. Restart the phone to test it;

2. Plug in the mobile phone card again. Is the check card slot loose or deformed?

3. After turning off the power supply, manually select the operator network or ask whether the surrounding users are normal;

4. Change the card and do a mobile phone test to find out whether there is something wrong with the mobile phone card or the terminal;

5. Verify whether the status of the mobile phone card is normal;

6. Verify whether the mobile phone card has opened the international long-distance and roaming functions;

If the above problems can't be solved, you can call the international roaming, Hong Kong, Macao and Taiwan roaming customer service hotline+8618610010 for consultation (calling overseas with Unicom number is free).