My XPERIA Z1 switches off and restarts when connected to Internet

[ratpat]

Hi,

My XPERIA Z1 switches off and restarts when connected to Internet

Tried almost everything 

Even used software repair from PC companion, but didn't work out. 

Does anyone have any solution? 

[Uliwooly]

@ratpat

Could you remove the SIM card and try only with WiFi? perhaps you have a faulty SIM card.