[Q] Xperia P Shutdown Problem

Fe.Se said:

hi,i have a xperia p,and i have updated to ICS 4 Days ago.it was good,there was no problem yet yesterday.
yesterday i was playing asphalt 7 (unofficial).then game crashes.after crashing i didn't open the game any more.after 5 mins later someone called me when i answered my phone,my phone was turned of automatically.
then i repaired my phone with SUS but problem persist.
main problem is when i insert the sim card.without sim card my phone get turned on but when i insert the sim and power on my device it's get shutdown automatic.

P.S.-in airplane mode my phone works fine with the sim card inserted.

Thanks In advanced!

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ariss1986 said:

I had the same problem too.This worked for me:
1.Open your phone without sim
2a(Ice cream Sandwich):Then Go to the settings->more->mobile networks->Network mode or 2b(Gingerbread) Settings>Wireless and networks>Mobile networks>Network Mode
3:And change network mode to WCDMA only(this worked for me).
4:Insert your Sim and restart your phone

If "WCDMA only" doesn't work you can try "GSM" only.
Old thread but I hope someone else gets helped by this.

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