Do you use a custom ROM?
Could you please provide some more information, thanks!
No i don't know if i'm using a custom ROM...but when i want to check for updates, i have a pop up message 'Your device has been modified. Software updates are not available.
some more info:
Android version 4.1.2
kernel version 3.0.31 - 1071725
Could you try a factory reset of your device?
Re: Can't open app!!
Factory reset done twice. still not opening! i've also tried to remove sd card and restart my phone... same problem