nano-SIM card is not recognized
This article troubleshoots issues related to the SIM card
Check whether the nano-SIM card is properly installed. For details, see how to install nano-SIM Card.
Check the nano-SIM card for damage.
Check the nano-SIM card IC chip for scratches/corrosion.
Dirty nano-SIM card (particularly IC chip) may prevent recognition. Clean gently with a soft cloth.
Contact Customer Service.