Phone will not turn on [UPDATE]

[kvaughan]

I rooted the first day and also did lag fix. Worked fine until this afternoon I haven't installed anything today and the only root app on the phone was (besides SU, BusyBox, etc) Root Explorer. Suddenly today while trying to update Twitter and Facebook via the Samsung Feeds widget I get a "network communication error". So I pull the battery and turn the phone back on and I get a very long Verizon splash screen and then it goes black. The capacative keys will light up and blink when you touch them but no other phone action besides that.

Any idea for a fix before I have to go get a replacement? Tried to run the unlagfix batch file and of course I get permissions denied since I can't SU from the phone.



Guess I got a little excited before trying the basics, here's what I did to fix it in case anyone else has the same problem...

1. Wait for the boot animation to stop and get to the black screen
2. Connect USB to PC
3. Run cmd.exe
4. cd to your Android SDK tools directory
5. Run "adb reboot recovery"
6. Once the recovery menu comes up volume button down to "restore factory settings" and hit the home button
7. Volume down to "clear cache" and hit the home button
8. Reboot phone

 

[Zennmaster]

Something similar happened to me on a BB and also on my original Droid.

What worked: Put it on the charger. Walk away, watch a ball game, or a movie and a half, get some food, think about something else for about four hours.

Come back and try again.

It's a weird thing with these devices. As near as I can figure, they can actually run the battery down faster than the OS/firmware realizes, and then they need a good bit of charge to get running again. In all of my own cases, running off of AC didn't help, either, which really freaked me out.

If it's still not working by morning, start thinking about taking it in.

Good luck!

 

[kvaughan]

Updated, got it working.

 

[Zennmaster]

Updated, got it working.

Awww Right!

 

[DeezNotes]

Next time, what you may be able to do is run adb logcat to view the realtime log from the phone to get an idea of what's going on.

It's also good to remember that the rage*.bin file that you put into /data/local/tmp is an exploit that should get you root access back temporarily.

Of course, the steps you outlined above are also very helpful. Thanks!