Joke Collection Website - Blessing messages - Card slot 2 can't use Unicom card, why?
Card slot 2 can't use Unicom card, why?
1. Whether the Unicom card has insufficient contact with the metal contact of the mobile phone; 2. Whether Unicom card is damaged; 3. Is the location a signal blind area or there is no signal suddenly. Tips: It is recommended to put Unicom card in other mobile phones for testing. If this situation still occurs, it is recommended to check the card in the business hall.
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