Fold3 dual card can not receive mobile phone.

Does the subject want to ask, "Why can't the fold3 dual card receive the mobile phone?" . SIM card is abnormal and the signal is bad.

1, SIM exception. 1. Due to poor contact of the SIM card, check whether the balance of the mobile phone card is sufficient, check whether the SIM card is abnormal, or replace the SIM card.

2. The signal is bad. The user is in a remote area, resulting in no signal or poor signal. You can try to turn on the flight mode and cancel it to see if there is a signal.