Joke Collection Website - Blessing messages - What does it mean that Redmi k20pro mobile phone card has no arrears but no service?

What does it mean that Redmi k20pro mobile phone card has no arrears but no service?

It should be that the SIM card slot is in poor contact.

Poor contact between the SIM card of the mobile phone and the shrapnel of the mobile phone card slot will cause the circuit of the SIM card to be ineffective.

If the mobile phone can't communicate with the network base station, there will be no service.

You can take out the SIM card, wipe the gold finger of the SIM card with clean cotton cloth, and then reinstall it.