SCH-I915 demo unit - Galaxy Tab 10.1 Q&A, Help & Troubleshooting

i purchased a tablet today a verizon galaxy tab 2 4g lte the model number on the back is sch-i915 but it seems to be a demo unit every 2-3 minutes it starts a video like you would see at the store and also whenever i delete the vzw demo showcase program it reinstalls it self and starts up again anyone have any idea how i can make this unit a regular tablet again thanks

anyone can help?

Have you done a factory reset in recovery?
I'd walk you through it but I no longer have a stock setup so I'm unable to give detailed instructions. I'm also not sure if the Galaxy Tab 2 is the same as the first generation (the SCH-i905 is somewhat supported in this section of the XDA forums, the SCH-i915 is the Galaxy Tab 2 version which is not and you should go here if you have that model: http://forum.xda-developers.com/forumdisplay.php?f=1596 ).
For the SCH-i905 what one does once the tablet is shut off is hold down the UP VOLUME button and then hold the POWER button. Immediately release the POWER button once the samsung logo appears on the screen and you'll be greeted by the bootloader menu allowing you to toggle from Download mode to recovery mode (open box with arrow pointing to android). A single press of UP VOLUME moves your selection to recovery and a single press of DOWN VOLUME acts as the enter key. You'll then be in recovery and somewhere within the stock recovery should be a factory reset option.
You will lose all of your files when you do this so be careful, back things up first.
If this doesn't work what I'd do is look into rooting the tablet, get it rooted and then use Titanium Backup from the Play Store to FREEZE the application.

I have that model now too. I haven't had that issue. I too would recommend a factory reset.
Sent from my ADR6425LVW using xda premium

Related

[Q] Bootloader/Download mode blocked on new/replacement Vibrants?

Hello community!
I own 2 Vibrants, both rooted with no issues. I'm no stranger to flashing through Odin, I've flashed many of the Vibrants in my workplace back to the stock 2.1 (seems to fix most of the issues short of GPS problems, even though it's supposed to be the same), so download mode is nothing new to me.
Recently a few of the people who've come to me with Vibrants have shown how they can't get in to recovery or download mode without using ADB, the hardware keys just don't seem to work for it. I've tried myself and was able to confirm this. We were still able to root them with no issues using one click root. I prefer to manually flash the update.zip myself, but whatever does the job. I've just received a replacement for one of the Vibrants (menu button went out), and noticed I can not get in to recovery/download mode. Naturally I rooted, installed terminal, then rebooted in to download mode, started a flash with Odin.
It hung on cache.rfs. I waited... and waited.. and it mocked me in it's frozen status. So now I'm at the phone+!+computer screen, which I've been at several times on my main Vibrant, but the key's still do not work for download mode. To clarify, I've tried each of the following methods to enter in to download mode, several times. It won't work. I'm in the process of trying different button combination's to see if there is another way to get in. Anyone have any thoughts or suggestions?
Edit: Included working steps so people don't have to search the thread
Provided by rhcp0112345:
Try this.
1. Take out battery, put it back in. (to turn the phone fully off)
2. Don't turn it the phone on!
3. Plug the phone into your PC, do not hit the power button!
4. See if the phone shows anything on the screen (powers on its own when plugged in)
IF the phone screen does 'turn on' after being plugged in without you hitting the power button, so far so good.
5. Now while it's on like this, hold the volume up AND volume down buttons.
6. Hold the power button as well as the volume buttons until the screen goes black.
7. As soon as the screen goes black, let go of the power button! But DON'T let go of the volume buttons!
Originally Posted by stepinmyworld
"have your usb in, press down both the volume up/down toggle and the power button.... hold them until the screen goes black and as soon as it does, let go only the power button and it should appear there again
however, i found out that you need to take out the battery and get into download mode freshly again...."
Hello,
If the above does not work for you.
Can you supply a full dump of the phone? Perhaps I/others can take a look at it.
Thanks!
I have tried that. I have tried almost every combination I can think of. I have tried holding both volume rockers then inserting the battery while plugged in to USB, holding the power through 1 and 2 cycles, I have even tried 3 and 4 cycles as well. I have tried just vol down, just vol up, both with the same results. I have purposefully bricked my main Vibrant to test this out and make sure I wasn't losing my mind. I was able to get in to download mode several ways, none of which work on this new device.
@rhcp0112345 - How do I grab a full dump of the phone? I'll be honest, I've never spent very long in phone+!+computer before tonight. I've never been stuck here long enough to see how to connect via computer. At this moment, plugging the phone into the pc gives me no prompts that something has been plugged in, the phone isn't seen by adb (big shock) or Odin. I'm at a loss myself.
Well,
First thing.
Can you please dump like so:
Code:
adb shell
su
busybox ls -al /dev/block/
Post that here.
Also,
Code:
adb shell
su
dd if="/dev/block/bml0!c" of=/sdcard/bml0.backup
Please 7zip the bml0.backup file and upload it someplace and PM me the info. Dont post it public.
Thanks!
I'll be happy to do that with the next device I have this issue with, but I can't boot the phone, therefore I can't connect via ADB (been trying, if I could do adb, I could just simply 'adb reboot download' to get in to download mode). I'm thinking at this point I will have to exchange the phone, as I can't get past the phone+!+computer screen no matter what I try.
I was running into this problem too. I re-extracted the files and tried again and it worked. I also tried it without loading the .pit into odin, not sure which of two or both did it. Not sure if its the right way, but that did it after hangin on the cache numerous times.
Sent from my SGH-T959 using XDA App
Follow the unbrick method.
You pull the battery and some other stuff.
To get it past that.
I think its volume up? + power?
Yeah, removing the .pit file seems to fix the lock up issue in Odin, but unfortunately, I'm not even getting to the download screen, so I can't get Odin to find the phone. I'm sure once I get to download mode I can get it running, but I'm unable to get download mode on this one device.
Try this.
1. Take out battery, put it back in. (to turn the phone fully off)
2. Don't turn it the phone on!
3. Plug the phone into your PC, do not hit the power button!
4. See if the phone shows anything on the screen (powers on its own when plugged in)
IF the phone screen does 'turn on' after being plugged in without you hitting the power button, so far so good.
5. Now while it's on like this, hold the volume up AND volume down buttons.
6. Hold the power button as well as the volume buttons until the screen goes black.
7. As soon as the screen goes black, let go of the power button! But DON'T let go of the volume buttons!
rhcp0112345 said:
Follow the unbrick method.
You pull the battery and some other stuff.
To get it past that.
I think its volume up? + power?
Click to expand...
Click to collapse
If you mean this solution to fix any brick, I have tried that method, it doesn't work on this new device. I originally used this thread when I was messing with my first Vibrant, and it worked beautifully, but it doesn't work on the new vibrant.
So I've pretty much given up on trying to figure this out. I've tried every method possible, all work on both my non-replacement vibrants, but nothing works on the replacement one. Going to have it replaced again and have a new one ordered out. When that one gets here, I will test download/recovery modes, if I have any issues, I'll pull the dump file and post it here, maybe someone can figure out what's going on. On the back of the device, the IMEI sticker has manufacture dates (year.month), looks like the replacement was a 10.7 just like my original Vibrant, so it's not a manufacturer date type issue, it's got to be something changed in the software side of things. It's almost as though the volume rocker keys do not work for recovery/download mode, I get the exact same thing as if I'm just pressing the power button. When I did get in to recovery (before getting to it's current state), the volume keys worked fine for selection though. I can confirm that there is no new information on tmob's side about how to do a hard reset using the hardware buttons (ie, recovery mode) as of this posting.
Did you try with the phone OFF..
1. Have ODIN running
2. Hold Volume Down + Up
3. Plug in USB (WHILE HOLDING VOLUMES buttons in)
Should go directly into DOWNLOAD mode
I did try that as well. Works beautifully on both my old Vibrants, but not on this new one.
Sent from my SGH-T959 using XDA App
johnny12times said:
I did try that as well. Works beautifully on both my old Vibrants, but not on this new one.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Drats!!! Oh well, time to go back to T-Mobile
johnny12times said:
I did try that as well. Works beautifully on both my old Vibrants, but not on this new one.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
@ Johnny12times: Dude u'r right. I've played around with a few different vibrants and they could all go into "download mode" - but when receiving a replacement unit (within the last 2 days), nothing works to go into download mode. Something has definitely changed - not sure what.
Good luck bro - hope it all works out.
I received my Vibrant last Thursday (8/19). I have never been able to boot into recovery mode using the buttons. Needed to root by using one-click.
Ive also tried every button combo and am still unable to get recovery or download. I received the phone last fri (8/20). Its so frustrating knowing that so many other people can get manual recovery. Im sending it back tomorrow for replacement, but who knows if that one will even work? I hope someone figures out why so many vibrants are unable to do this. Good luck!
Well my new one should be here within the next day or so, as soon as it arrives I'll check it and pull a dump file. I'm not savvy enough to figure out how to fix it, but at least smart enough to put it here for the people that can.
How about this:
1. Remove SD and SIM card
2. Remove battery
3. plug the phone into USB
4. hold down vol-up and vol-down
5. pop the battery back in while holding vol buttons

[Q] Removed Data network mode from Phone Options

Hello,
I just got a galaxy s2 today, and have an issue I hope someone can help me with. When I first got the phone and held down the power button the "Data network mode" tab was available in the phone options menu that popped up, along with airplane mode, shut down, and silent mode. However, this tab (Data network mode) no longer shows up when I hold down the power button. Is there a way to reinstate this tab onto the phone? Any help would be appreciated.
My phone is the AT&T variant SGH-I777 running Andriod 2.3.4 kernal version 2.6.35.7, Build number Gingerbread.uckh7.
Thanks!
Try settings, privacy, factory data reset.
Sent from my SAMSUNG-SGH-I777 using XDA App

[Q] Help boot loops, need hard reset

Phone boots, but then resets it's self about 2-6 seconds after unlock screen appears.
So I figured why not unlock the bootloader and start from scratch... well it's back and my window to return it to Amazon expired yesterday! Any ideas on how to do a hard reset when I can't get into Android?
Turns out the new Amazon app is F'n up some phones... so don't install yet.. and if you did try and get in long enough to uninstall it.
Bobvark said:
Turns out the new Amazon app is F'n up some phones... so don't install yet.. and if you did try and get in long enough to uninstall it.
Click to expand...
Click to collapse
Yes, people in another thread were complaining about Amazon. Uninstalling the Amazon app makes the problem go away. I posted this in another thread, but sharing here too if it helps some people out.
Just boot in safe mode and uninstall the Amazon app.
Every Android phone should have a safe mode. You can normally access it by:
1. Power on device
2. Wait a few seconds for the boot animation to start (on HAM2 you can wait til you heard the jingle)
3. Hold down both volume up and volume down buttons
Alternate method if device is powered on:
1. Long press power button
2. When the shut down menu appears, long press on "Power off"
3. A prompt will appear asking if you want to reboot in safe mode. Pick "OK"

Note 4 unable to reset

I purchased a note 4 as a fun project, it has a cracked top glass only around the upper camera, I figured once I reset it, was going to proceed with glass replacement.
I put it aside, now its been a few weeks, so I hope I get the this in order of events.
While I am not expert, I am not a newberry either, but have exhausted my knowledge and searched this forum over, but maybe not using the correct search keyword.
I believe it is complete stock, but has a passcode and/or finger print lockout, so unsure. Still has all the previous user's settings & files.
It boots fine to lock screen. I can navigate to make an emergency call, all screen, volume buttons work, etc.
I simply want to wipe it through the normal stock recovery, but the normal key power+up+home combo is not working, the phone simply boots straight to lock screen every time.
Download mode is also not accessible either. power+down+home, same thing - boots and straight to lock screen.
Every combo of pressing power, volume or home get me to the same spot. Its as though the buttons do not work until it is booted up to lock screen.
I figured I would craft up a 300K usb jig to force download- still no go, same issue - boots straight to lock screen. Even tried variable resistor values, still no go.
I finally was able to get to download mode using Samsung 300K tool program - but even then, the phone will only initiate download mode if I click "connect" at just the right time during bootup.
So I downloaded the appropriate 6.0 android from SamMobile, loaded it via Odin successfully, the download finished, phone rebooted, and continued with android setup ( the screen where android initializes apps i.e 1/3xx, 2/3xx, etc and runs through 200, 300 or how many apps are installed, it takes awhile), so I walked away to let it finish.
I come back - its on the same dang lock screen.
Now I have read that one workaround is to pull the battery after some point to stop the phone from booting, then enter recovery and clear cache/ dalvik.
So I tried that, Odin, download, once phone reboots and vibrates, pull battery - but as stated, still not able to enter recovery.
USB debugging does not appear to be enabled, so unable to try that route either.
At a dead end. Anybody have a suggestion to get this device reset to factory.
I will even take a verbal beating :laugh:
Would love to even get TWRP, but thats a pipe dream at this point.
jammer

Question phone screen is off and won't restart

my xperia iii just started acting up. I tried to log in to siriusxm and the screen timed out because I was away for a bit. I tried to turn the screen back on when it got stuck in accessibility mode with the screen off and constantly fired the Google assistant. pushing and holding power does nothing except fire off the assistant three more times. if I can't get it to come back to me I can do a factory reset since I just received this phone yesterday and haven't done much with it. anything I can do here?
This isn't normal behavior. If you can return it.
Assuming you didn't install something stupid it's likely a firmware or hardware issue.
+ 1
Was this a new device? Rooted?
Are you sure that you long pressed the power button and not the Google Assistant button by mistake?
ctkatz said:
my xperia iii just started acting up. I tried to log in to siriusxm and the screen timed out because I was away for a bit. I tried to turn the screen back on when it got stuck in accessibility mode with the screen off and constantly fired the Google assistant. pushing and holding power does nothing except fire off the assistant three more times. if I can't get it to come back to me I can do a factory reset since I just received this phone yesterday and haven't done much with it. anything I can do here?
Click to expand...
Click to collapse
Try pushing and holding power + vol up until it vibrates it'll force restart the device.
1. bought via swappa, listed as mint.
2. unrooted
3. it was the power button. it's below the volume rocker, first button on the side. the assistant is the second (and smaller) button on the side.
4. eventually the phone unfucked itself. I did nothing but wait. this actually happened a second time later on except this time the screen displayed my wallpaper at least. I rebooted as soon as I had control and so far so good. I will try power + vol up next time. btw I'm guessing it may have been a software issue. I was moving from a note 8 that had a bixby specific app that got transferred and activated. however a similar thing happened to me with a galaxy tab 4 (without any kind of software mod) so I don't know. I had to wait for that device to unfuck itself too.
ctkatz said:
1. bought via swappa, listed as mint.
2. unrooted
3. it was the power button. it's below the volume rocker, first button on the side. the assistant is the second (and smaller) button on the side.
4. eventually the phone unfucked itself. I did nothing but wait. this actually happened a second time later on except this time the screen displayed my wallpaper at least. I rebooted as soon as I had control and so far so good. I will try power + vol up next time. btw I'm guessing it may have been a software issue. I was moving from a note 8 that had a bixby specific app that got transferred and activated. however a similar thing happened to me with a galaxy tab 4 (without any kind of software mod) so I don't know. I had to wait for that device to unfuck itself too.
Click to expand...
Click to collapse
Try Safe Mode. It will temporarily disable a lot of user-space configurations that can cause boot loops. It's good for broken launchers, bad widgets, impossible settings, etc.
Take the microSD card out too. Google worked hard to disable expandable storage starting with Android 11. There's the floppy-disk-slow, absolutely useless SAF and nothing else. Performance workarounds from other phones, even if they're as simple as legacy mount options, will cause bootloops.

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