Joke Collection Website - Public benefit messages - Why can't my mobile phone (cottage) use SMS, phone call, internet access and other functions after it is turned on, but the signal grid is full and other functions are available?

Why can't my mobile phone (cottage) use SMS, phone call, internet access and other functions after it is turned on, but the signal grid is full and other functions are available?

First, the signal is full. You're definitely not the flight mode upstairs. The flight mode signal is bifurcated.

I think it may be a poor contact with the sim card.

By the way, is your mobile phone mobile or Unicom? When the signal is full, does it show China Mobile or China Unicom? Also, what doesn't appear when you make a phone call? I knew it.