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Help Flight mode problem

Hi all
I am facing the same problem and unable to turn off flight mode. factory reset not solving this problem, so i submit my s2 to samsung service center and now they said that the mother board has to be changed. Now I am waiting they will change it today or may be tomorrow.


* Yesterday I got my phone they had changed the mother board and till now I am not facing any problem.
 
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my SGSII keeps on flight mode. At first it's just says that it out of service, but not long after it's reverted to flight mode and won't return. When I tried to use factory reset, it says "ID is unknown! Reboot device" but even after I reboot it, it's still flight mode.
Does anyone know how to fix this problem?:(:(
 
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I am also facing the same problem with my S2. The phone goes into Flight mode while on a call and the call gets disconnected. I also don't get full reception on my phone sometimes. Have you been able to find a solution?

Thanks!
This solucion work for me.
FOUND THE SOLUTION!!
copy paste it on any forum please :)

I had same problem on my gs2 just press power button a while for the power options to pop up then hold the flight button for like 10 seconds until you feel your phone rumble, right after I did this my phone connected to my network again and I finally started getting my text messages :p hope it works for you guys aswell!
Only thing I did not feel no rumble. I just kept holding flight mode and turning it on and off. Its been more than 2 months and problem fix. I did Factory resect and failed. good luck my inglish is poor.And my cel. improved in other ways.
 
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