The phone displays “Insert SIM card/ Unable to recognize SIM card/ Unable to use SIM card/ Failed to register SIM card/ No Internet service”

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1. Check if the SIM card is damaged or cancelled; if so, please use another SIM card.

2. The SIM card may not be inserted correctly, please attempt to re-insert the card and restart the phone.

3. Check if the phone is bound to a specified service provider; if so, please replace the required SIM card.

4. Check if the network signal is strong, if not, please go to other places with better signal.

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