No SIM Detected on xperia z3

[mrtn_tupe]

Hi guys can someone help me??
I'm using a xperia z3 dual, and my SIM card is not working,do you know whats the problem?? I tried to use my SIM on a different phone and its working,so definitely the sim is not the problem..
Before my SIM is working perfectly, i don't know what happen,all of a sudden it just stoped working,there is no signal when i insert it to my phone,but in the home screen it recognizes the SIM.
So what do you think the problem is?? The sim reader or signal??
Thanks for your help..

[Uliwooly]

could you test a different SIM with your phone? 

have you flashed the phone?

[Didrik]

Hi @mrtn_tupe,

I'd suggest you start by trying to manually connecting to a network. Go to Settings > More > Mobile networks > Service providers. Are you able to connect to your service providers network here?

Are you using one or two SIM-cards in your Xperia Z3 Dual? Have you tried switching places with the SIM-cards or inserting a SIM-card in the other slot?

[Ferike]

Xperia Z3

On day the phone was O.K., next morning no signal, no SIM card detected. Took phone apart. Bent (or tried to, but was no visible sign of it) SIM card slot (the metal housing) by applying pressure on it with a screwdriver. It worked.