1、SIM Card not recognized
①Contact the operator to confirm the network frequency band used by the SIM card, and then confirm whether the watch manual lists support for this frequency band, if not, it is recommended to replace the sim card.
②Confirm whether the SIM card is damaged.
③Check whether the shrapnel of the SIM cardholder of the watch is obviously deformed or dirty. If there is such a phenomenon, the customer can try to clean it.
④If the above plan is invalid, please contact the official after-sales email at email@example.com