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[Q] Phone stuck at AT&T logo

Last night I was using my phone and it rebooted randomly, and when it came back up it got stuck at the AT&T logo. I pulled the battery and restarted several times with no luck. Even left it out overnight and tried again.
I can get the phone into 3e recovery just fine. Will clearing the cache possibly help? What information is on the cache that will be cleared?
I don't have an original charger cable right now, so I can't try download mode. I'm trying to avoid using Odin again, because I would rather not lose the huge amount of new contacts and notes I have in my phone, it would be a major setback.
My phone has also had some issues with a device I/O error, and I haven't been able to back up my phone, so I'm not even sure if download mode would work for me.
Please help!
Edit: As I was about to write that I have had this problem before.... my phone was at the AT&T screen and it magically works again.

InfuseIssues said:
Last night I was using my phone and it rebooted randomly, and when it came back up it got stuck at the AT&T logo. I pulled the battery and restarted several times with no luck. Even left it out overnight and tried again.
I can get the phone into 3e recovery just fine. Will clearing the cache possibly help? What information is on the cache that will be cleared?
I don't have an original charger cable right now, so I can't try download mode. I'm trying to avoid using Odin again, because I would rather not lose the huge amount of new contacts and notes I have in my phone, it would be a major setback.
My phone has also had some issues with a device I/O error, and I haven't been able to back up my phone, so I'm not even sure if download mode would work for me.
Please help!
Edit: As I was about to write that I have had this problem before.... my phone was at the AT&T screen and it magically works again.
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I'm sorry if your not able to save all your contacts but the only way to stop your phone from flashing samsung over and over again is to use odin. Or the case could be is that your power button is either stuck or messed up.

Help Phone wont start, I am not sure if its bircked.

I am really not sure what happened to the phone but I will tell all I did that might have connection to the current sitiuation.
I rooted the phone a while back , no issues with root.
As internal memory is low on this phone (4 gbs) I used link2SD.I have used in past with other phones never had a issue but this time the apps which were linked magically disappeared and some wont start saying " Application has stopped working " , So I decided to , oh wait I forgot I also had TWRP custom recovery on this phone too , no issues happened with it either, yet. So I decided to restore to a backup I made with TWRP a few days ago, I have previously done this thing and it worked perfectly unlike this time.I booted to recovery then restored to that backup but when I booted back the device wouldn't start! All it was showing was the boot screen(circles moving in weird pattern) I waited around 3 hours then I decided to factory reset , I took out the battery (BAM I did a mistake here I guess) went to recovery did a normal factory reset then again I was at the boot screen looking at circles This time I gave a around 10 hours but it still didnt load up , then I took out the battery again next what I see it when I try to start my phone NOTHING WILL HAPPEN only screen turns on for like few miliseconds showing only back screen (NO KARBON LOGO OR ANYTHING) and goes off again. I tried pressing Vol Up and choose recovery mode but it wont let me go in recovery it turns off again as soon I choose okay (RECOVERY DONT LOAD AT ALL NOT EVEN THE LOGO). Please explain what happened to phone and how can I fix it. :crying: :crying: :crying: :crying:

Go To Karbonn Care

I think I told you its rooted and stuff, which voids warrenty

Same thing happed to me with my sparkle v and now its not even receiving stock firmware via sp flash tool

Flash stock firmware by removing the battery

DeepSahota said:
Go To Karbonn Care
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Hey can you please help me.I have karbon sparkle v.everything is on stock.after marshmello ota updates the phone was little bit unstable .many google apps were getting fc. Recently in decided to factory reset my device.after factory reset I can't get past the "checking connection" screen that we get after factory reset. There is no option to skip that to as usually it is available in other devices and ROMs.can u please tell me how can I fix this.can I flash stock 5.1 via stock recovery ?or maybe 6.0.1 again? I can't bypass the screen so I cannot switch on USB debuinging else everything would have been OK ?.please suggest something

Did System Update on Galaxy 6 - Now stuck on Samsung Logo...

Hi, I'm in a bit of a rage right now. Need my phone for work, and also afraid of loosing all the pictures and videos I've taken
So my phone has worked perfectly for months, updated several times, but today after the last update it's stuck on the boot logo, the Samsung one.
I've tried hard reset with Power+Down, it just reboots to the same logo and stays there forever. I also can't get into recovery mode with Power+Up+Home, it just gives me a yellow triangle with an exclamation mark in it for 1 second then boots back to the samsung logo. Tried Kies 3, it doesn't recognice the phone at all, tried everything in there.
The only thing I can access is the Download mode Down+Power+Home, I have no idea what to do there, I've read about Odin but that looks like some NASA-stuff way above my knowledge, isn't there just a way to get it back to previous version? Orginal, stock and all that? Don't wanna mess with roots if that can be done
I'm out of ideas, please help me, are all my data gone? Pictures, video etc? :'(
Help please
*Sorry for bad English, not my native, but I hope it got trough.

Sounds like an update gone wrong. Restoring the phone isn't so hard but saving your pictures and data is harder in most cases. You can try using Smart Switch and see if your device shows up on failed updates, maybie it can repair the installation. You can also use Smart Switch to restore the phone completely, but this DELETES everything on it. If you haven't rooted phone and have warranty, I'd return it to Samsung with strict instructions that phone broke when software update and that you want to keep your data/pictures. If the phone is rooted there are ways to extract data from the phone memory but I'd only do that as a last option.

schoolsux said:
Sounds like an update gone wrong. Restoring the phone isn't so hard but saving your pictures and data is harder in most cases. You can try using Smart Switch and see if your device shows up on failed updates, maybie it can repair the installation. You can also use Smart Switch to restore the phone completely, but this DELETES everything on it. If you haven't rooted phone and have warranty, I'd return it to Samsung with strict instructions that phone broke when software update and that you want to keep your data/pictures. If the phone is rooted there are ways to extract data from the phone memory but I'd only do that as a last option.
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Yeah, I did the upgrade with modelname and S/N trough Smart Switch, it worked, but all data was lost including all my contact phone numbers, hade over 350 :| don't think they are synced either? :|
Anyway, glad the phone works, will never install these stupid updates again, never noticed a single improvment after them anyways

[Completed] Phone doesn't turn on/stuck in bootloop

Need suggestions for this.
A few weeks ago I rooted my phone to remove some apps that I never used. I just kept using my phone as always and did nothing special except removing those apps. Today I decided to unroot my phone because I felt it would be safer in case anything should happen to it (HOW IRONIC). It's only 3 months old and I didn't want to loose my warranty. I opened the SuperUser app and clicked full unroot and clicked continue. My phone instantly returned to the home screen and then powered off. Then it turned on again, but now the message "Samsung Galaxy S7 powered by Android" keeps flashing on the screen. I went into recovery mode and tried wiping the cache first, but nothing changed. Then I wiped all my data and did a factory reset, but my phone keeps flashing and won't turn on. I'm really desperate and don't know what to do because I'm afraid I can't take it to my retailer because my phone is rooted (if it still is rooted, but I have no idea). What should I do?

Hi,
Try posting your question here:
http://forum.xda-developers.com/galaxy-s7/help
The experts there may be able to help.
Good luck!

Have I bricked my new S6?

I just picked up this phone yesterday. I started setting it up and found an encryption feature I thought would be useful as I deal with sensitive data. I read the instructions which said that the phone will take an hour or so to complete encryption, and I saw it restart and progress through the progress bar that appeared. It then went onto the Samsung logo and stayed there for about 2 hours. I got concerned and thought it had frozen so I restarted the phone using the 3 keys. Now it just recycles and gets to the Samsung logo and doesn't progress?!

Have you tried to factory reset or the data is not a thing that you can lose.

I had to find out how to factory reset via the boot. I've done that and my phone successfully works again. The issue was I couldn't get into the phone to reset - it was stuck on the Samsung logo, so resetting from boot was the only way (and thankfully it worked)

TheSippler said:
I had to find out how to factory reset via the boot. I've done that and my phone successfully works again. The issue was I couldn't get into the phone to reset - it was stuck on the Samsung logo, so resetting from boot was the only way (and thankfully it worked)
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Glad you fixed it! Be careful next time!