1. Windows Central Question's Avatar
    My Lumia 1520 cannot detect my SIM card. It says my card is missing or invalid, however my card works on other phones. After putting a different one in my phone, it still cannot detect it. Any suggestions??
    09-18-2016 05:57 PM
  2. abhishek singh21's Avatar
    My Lumia 1520 cannot detect my SIM card. It says my card is missing or invalid, however my card works on other phones. After putting a different one in my phone, it still cannot detect it. Any suggestions??
    i assume you are on insider build, as the same issue has been encountered by other insiders too. The only possible solution currently is to do a hard reset , you can do that by going under settings>system>about>reset :)
    09-18-2016 10:40 PM
  3. Chintan Gohel's Avatar
    My Lumia 1520 cannot detect my SIM card. It says my card is missing or invalid, however my card works on other phones. After putting a different one in my phone, it still cannot detect it. Any suggestions??
    is the tray dirty or the slot dirty? And is the tray going all the way in?

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    09-25-2016 12:14 PM

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