What if aw70 has four question marks?

When the cell phone signal box shows a question mark and the network cannot be connected, it means that the SIM card of the mobile phone is in arrears and stopped.

2._x005f You can use WiFi network to recharge when the SIM card of the mobile phone is in arrears, and the mobile phone can restore the network after receiving the SMS with successful recharge.

3. Need to be reminded that if it is a question mark prompt that suddenly appears, it may be that there is abnormal application consumption traffic in the mobile phone, so you need to check the application traffic usage.