Unicom 3G card, you can make phone calls and send text messages, but you can't surf the Internet.

If the inquiry is that the mobile phone can't surf the Internet and answer the phone normally, please check the following contents: 1, and confirm whether there is a network. It is recommended to use the Internet access function in places with strong signals; 2. Check whether there is any phone bill in the account. If the balance is insufficient, you need to recharge before you can use the internet function and answer the phone. 3. Confirm whether the parameters of mobile Internet access have been set. Please contact manual customer service for details. 4. Check whether the USIM card is inserted. If it is plugged in, but it still doesn't work, it is recommended to go to the local Unicom's own business hall to check whether the USIM card is faulty or not. 5. Check whether the function or signal of the mobile phone is normal. It is suggested that you change your mobile phone or location, try the internet access function and then answer the phone. 6. Check whether there is anything wrong with the mobile phone. It is recommended to restart the phone or change the machine for testing. Eliminating the above situation did not solve the problem. It is recommended to contact local manual customer service for handling.