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My router not detected sim card. I did all solution ex. Sim card change, restore,
Does this MR400 cannot detect the SIM card at all? Take out the SIM card, reset the MR400 to factory defaults, restart it, then insert the SIM card again.
Meanwhile, please check if the firmware of the MR400 is up-to date, if not, update it, then confirm again.
BTW, did you use the sticker in the package to fix the SIM card firmly on the SIM cardholder? What if you try another SIM card, will it be detected?
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