Why isn't my Sim card being detected?

[Windows Central Question]

Sim card not detecting

I updated my lumia 520 to Windows 10 and after being updated my phone is unable to detect my sim. I inserted my sim in another phone and it was working fine. I also tried inserting another sim in my lumia 520 and it also resulted the same error my sim not detecting. Please respond to this as soon as possible.

 

[Venkat S1]

Re: Sim card not detecting

For me also the sim card is not detecting in my lumia 520 after update it to windows 10 technical preview. Actually in Settings-->About the imei number is missing. I don't know to resolve this. Please help

 

[pasmanz]

Re: Sim card not detecting

This happened on my, had to do a hard reset without using a restore point. It sucks but I needed my phone to work as a phone.

 

[a5cent]

Re: Sim card not detecting

We have multiple threads on this topic. Please continue the discussion here:

http://forums.windowscentral.com/wi...hnical-preview-device-failing-detect-sim.html

Closed.