1. In this situation,
Please make sure that the device you are using is SIM lock-free. Please check directly with the store where you purchased your device to see if it is SIM lock-free.
If the issue is still not solved, please follow the steps below.
If the issue is still not solved, please follow the steps below.
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- If your device is a dual SIM model, please make sure that only one SIM is inserted in your device.
- Please check your signal. If you are in a small or crowded place, you may not be able to receive a signal. To get a good signal, try moving to an open and high location.
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Check if the operating system has been updated to the latest version: Settings → Software updates
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Check if only the JP Mobile APN profile is stored on the device. Other old profiles need to be deleted.
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Turn on and off "Airplane mode".
- Turn off the device, remove the SIM, gently wipe the chip with a soft, dry cloth, then reinstall the SIM. Reboot the device.
2. If the above steps cannot help you solve the problem, please try installing the sim on other phones. If the SIM does not work, it means your SIM card is broken. Please contact us promptly for SIM card replacement instructions.