Lumia 1520 cannot detect SIM card after Anniversary update??

[Windows Central Question]

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??

 

[abhishek singh21]

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

 

[Chintan Gohel]

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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