Why can't the mobile phone suddenly make a phone call or surf the Internet, but it can send a text message?

If the phone can't make a call, we suggest that you:

1. Check whether the phone is in airplane mode.

2. Check whether the cell phone signal is stable. If the network signal is not good or there is no signal, please turn it off and restart, and search the network again. If it doesn't work, it is recommended to take out the SIM card and try to insert it again.

3. Check whether the mobile phone has enough balance.

4. If you can dial some fixed numbers, check whether the fixed dialing function is started. It is recommended to disable this feature.

Note: When fixed dialing is disabled, the PIN2 code will be prompted. The network operator needs to query the password.

5. Check whether the call barring function is set. If so, please cancel and try to make a call.

6. Replace other SIM cards.

7. Back up data (contacts, text messages, pictures, etc.). ) and restore the factory settings.

If the problem still exists, I suggest you take the purchase invoice, maintenance card and mobile phone to the local Samsung after-sales service center, and professional engineers will help you test it.

If the mobile phone cannot access the Internet through mobile data, we recommend that you:

1. Slide down the curtain at the top of the screen to open the mobile data. The stars prompt that the SIM card needs to open the Internet service ~

2. If you still can't access the Internet after the above operations, it is recommended to reset the parameters of mobile Internet access: Settings-Mobile Network-Access Point Name-More-Reset to the default settings.

3. Replace other SIM cards or try other time periods to eliminate network problems.

4. Upgrade your mobile phone to the latest version.

5. If it doesn't work, please back up the data in the mobile phone and let the machine restore the factory settings.

If the problem still exists, please take the purchase invoice, maintenance card and machine to Samsung Service Center for inspection.