Bootloop - Samsung Galaxy A20 Questions & Answers

Hello! My friend asked me for help bringing his phone ( a20e) back to life.
He said he didn't do anything, but it powered off then never on again.
The goal would be to save app data (notes mainly)
I attached the screen of the phone.
Try again does nothing
I would try to don't use erase app data (to save notes), but will the internal sd card be formatted?
How can i proceed? I tried using volume - while samsung logo appears to get into safe mode, but it does nothing...
Thank you!

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Help

Hey every one I'm new to xda and I got my samsung vibrant rooted with the stock system recovery and was working fine but than I decided to do some apps and file transfer from another android phone to it and after that my phone kinda froze on me. So I rebooted the phone and boom nothing happen after the galaxy s animation, its just stuck there then the screen went black out. I rebooted again and this time I went to the sustem recovery mode and try to do the data reset but it couldn't fix it either. I tried to connected to my computer but since the phone wasn't fully booted into the home screen my computer are unable to detect the phone driver. I reconnect the phone and computer together, and this time I got to where it say's "downloading" "do noy turn off target", what is that mean? is it download something or is that I'm suppost to do something to it. Please can someone help me out. I've already download the stock firmwire but couldn't be able to transfer to the mass storage cos the phone couldn't boot beyound the galaxy s animation and eventhough its in the system recovering I still couldn't get it to connect to the phone mass storage. What can I do to fix it?.
You can take the battery out at that screen, but I don't know if it's going to fix your overall issue.
Take sd out. Hook to computer with adapter. Move stock nandroid to sd. Replace sd in phone. Boot into clockwork recovery. Restore nandroid. Reboot.you are now stock with root.
one thing
I know what I did is stupid but at lease I learn my lesson. I would really appreciate if someone could help me out.
help
I tried but its not working cost the phone doesn't read what's on the sd card it read only the mass storage which is the 14g not the 2g memorycard.
The SD card won't be in the phone so of course it won't read from it. It will read from the interbal memory, so do it from there.
Sent from my SGH-T959 using XDA App
Kld4ever2008 said:
Hey every one I'm new to xda and I got my samsung vibrant rooted with the stock system recovery and was working fine but than I decided to do some apps and file transfer from another android phone to it and after that my phone kinda froze on me. So I rebooted the phone and boom nothing happen after the galaxy s animation, its just stuck there then the screen went black out. I rebooted again and this time I went to the sustem recovery mode and try to do the data reset but it couldn't fix it either. I tried to connected to my computer but since the phone wasn't fully booted into the home screen my computer are unable to detect the phone driver. I reconnect the phone and computer together, and this time I got to where it say's "downloading" "do noy turn off target", what is that mean? is it download something or is that I'm suppost to do something to it. Please can someone help me out. I've already download the stock firmwire but couldn't be able to transfer to the mass storage cos the phone couldn't boot beyound the galaxy s animation and eventhough its in the system recovering I still couldn't get it to connect to the phone mass storage. What can I do to fix it?.
Click to expand...
Click to collapse
Turn off the phone, take out the battery and take out the SD card, try to get your hands on a sd card reader for your card so you can fix what you did without using your phone to mount it. Copy the rom or stock firmware over to the card and use the recovery, wipe data/factory reset and then try to load up the stock firmware. if all else fails do a hard reset:
To hard reset Samsung Vibrant, follow the steps below:
Step 1. Turn your Samsung Vibrant off. If your Samsung Vibrant is frozen, pull the battery out and reinsert it.
Step 2. Hold the Volume Down button.
Step 3. Press and release the Power button.
Step 4. You are now presented with a menu that allows for Fastboot, Recovery, Clear Storage, and Simlock
Select Clear Storage by pressing the Volume Down button, then press and release the Power button.
Step 5. Choose one of these: Volume Up for YES and Volume Down for NO. If you selected YES, all data including third-party applications will be deleted from the Samsung Vibrant.
That is for the default recovery so depending on the recovery you are using try to wipe everything and flash the ROM from the sd card, if you need help PM me or contact me on chat.andirc.net #droideris, or irc.andirc.net #droideris
Best of luck!

[Q] First boot loop, now wont turn on, 7 vibrations?? HELP!!

Hello, I have the HTC tmobile mytouch 4g and it is acting up. Stock phone, no roms or rooted.
Three days ago, at night, doing some browsing and then everything froze, would not respond. I removed battery, and then it did a boot loop so i kept trying for a while, taking out battery, and turning on but still boot loop, so then left it alone.
The next morning i held the power and home button and it turned on and it worked normally for the whole day! until about the same time two days ago. Doing a little reading and browsing before bed (same website too, but i didn't download anything and the site works fine on a computer) and it froze. Did the same routine except it didnt work in the morning again. I removed sd and sim card too, left everything out for a long time, but whatever i tried it wouldn't work.
Yesterday i tried all day and then I read online I should do a wipe cache partition from the recovery menu. So i did that, but it was still a boot loop. After a few tries, it stopped turning on. Now the screen doesn't even turn on, but the phone vibrates 7 times when power is pressed, then will not respond at all unless i take battery out, then it will do the 7 vibrations and etc.
All htc said is to try a factory reset, but it wont even go to that menu. I can send it to them, but will probably lose everything on my phone ( like messages, contacts, and app data?) BUT I'm convinced there is another way, since it fixed itself the first time.
Just recently, now it has started blinking the charging light when charging (i charged it about 10 hours ago and it didn't blink)
I don't really know much about how these things work, but I have been reading some stuff about pd15??.jzip and putting it on the sd card (i have access to a micro sdcard reader) Also about a stock image or something. I don't know much so please give a simple-ish answer.
IF THE SOLUTION YOU WILL PROPOSE HAS A LOW SUCCESS RATE OR HAS A POSSIBILITY OF FURTHER DAMAGING THE PHONE, PLEASE LET ME KNOW... If it is too difficult/ too much work/ or dangerous, then I don't mind losing whatever i have on the phone
The PD15IMG.zip is the "stock image." It has to be installed in the bootloader, and you WILL lose all of your data. Usually you can get to the bootloader by holding volume down while booting. It will scan for the file there. Can you get into your bootloader?
sigh
cannot turn on no matter what i hold.
I think the blinking last night meant that it isn't charging the battery anymore. wont even vibrate now unless it is plugged in. its not an issue with the battery is it??
if this stock image is going to delete everything anyway, i might as well send it to htc. i just hoped i might be able to save my messages because i have some really hilarious ones, but oh well.
Can you please tell me exactly what ill lose? so,
bookmarks on the browsers
contacts and messages
all apps (they're on my phone) and app data? (like will i lose my progress in temple run 2, lol)
myTouch 4g HELP said:
cannot turn on no matter what i hold.
I think the blinking last night meant that it isn't charging the battery anymore. wont even vibrate now unless it is plugged in. its not an issue with the battery is it??
if this stock image is going to delete everything anyway, i might as well send it to htc. i just hoped i might be able to save my messages because i have some really hilarious ones, but oh well.
Can you please tell me exactly what ill lose? so,
bookmarks on the browsers
contacts and messages
all apps (they're on my phone) and app data? (like will i lose my progress in temple run 2, lol)
Click to expand...
Click to collapse
I don't have this phone with me ATM.but I seem to remember when you press volume UP: and POWER it if i remember correctly would do the blinking light and vibrating a few times .Anyways to get in recovery You Press Volume DOWN and press POWER at same time should bring you to recovery and if running a custom recovery such as CWM or 4EXT you can try the wipe cache and wipe dalvik cache to see if fix issue or try if using a custom ROM you can try installing the ROM again without wiping data and system first.I Read your post and the replies and correct me if I am wrong it sounds like this might work and sounds like you are able to get to recovery from reading your post I think.I would try and confirm that you are or are not able to try these suggestions before you try the boot-loader suggestion with the PD15IMG.zip or whatever it is called ,these are assuming your rooted with a custom recovery such 4EXT if not and I read wrong again I apologize. Good Luck!
alternatively you could use adb if u installed it
1. connect ur phone via usb cable.
2. run cmd from ur android-sdk folder (or whatever you named it). by running in folder I mean, ur path in cmd should be C:/whatever-is-your-sdk-folder path
3. type this in cmd window "adb reboot bootloader" (without ")
it should load your phone in bootloader from where u can get more options like factory reset or install new rom (u can mount ur sd card in recovery & put new rom to flash on sd card)

Can't boot to recovery using 3 button combinations?

Earlier today, my galaxy s4 kept on freezing at the homepage every time i boot up the phone. I wanted to backup all my things from my internal storage and do a factory reset to see if it help to solve the freezing but I release i can't transfer file from my internal sd card when the phone is off. Anyone know how i can access it while the phone sd card while it is off and also why my galaxy s4 keep on freezing whenever i boot up the phone after a few seconds
EDITED: Solve the problem above, now using custom rom Omega v9.
Now I have problem of not able to boot into the recovery using the home,vol up and power buttons, my screen first display the splash screen with the blue text *booting recovery* on the top left but after a few seconds it disappear and flashed back the normal splash screen which eventually boot up my phone normally. Any solutions?
AnchorChin said:
Earlier today, my galaxy s4 kept on freezing at the homepage every time i boot up the phone. I wanted to backup all my things from my internal storage and do a factory reset to see if it help to solve the freezing but I release i can't transfer file from my internal sd card when the phone is off. Anyone know how i can access it while the phone sd card while it is off and also why my galaxy s4 keep on freezing whenever i boot up the phone after a few seconds
Click to expand...
Click to collapse
I dont think if u have device off u can operate as it needs power to transfer data thought i m not expert i will follow other senior opinions also
And for Freezing there must be some app or some system file creating the issue for you
U can try flashing a Stock firmware using Odin which will keep all ur data as its and ocne it boots up take all the data backup and reset the device for error free experince
Note aftr flashing Stock firmware u ll loose root u need to root again u can use CF root method for the same
Help!
AnchorChin said:
Help!
Click to expand...
Click to collapse
Just download Quickboot or Power Toggles from Play or any other power menu app.
Mark this thread as closed/Solved.

[Q] Booting into White Screen

Hi, today I was just using my phone when it froze while I was using Pandora and Instagram. I removed the battery and then put it back in and on boot it goes to a plain white screen and hangs there.
I removed the battery and tried again but nothing happened.
I hard reset it and it seemed that the hard reset completed, but it still boots into a white screen.
I was running the ACA Sim Card build. Unfortunately I learned a lot of the stuff in a binge years ago and now am not too good at finding the stats on my phone.
I can reach the RGB screen. I am currently relearning everything to try to fix it, but any help would be greatly appreciated. I also booted into the RGB screen and connected to a computer but I didn't really see the computer recognize anything was connected.
Thank You
HCastillo3 said:
Hi, today I was just using my phone when it froze while I was using Pandora and Instagram. I removed the battery and then put it back in and on boot it goes to a plain white screen and hangs there.
I removed the battery and tried again but nothing happened.
I hard reset it and it seemed that the hard reset completed, but it still boots into a white screen.
I was running the ACA Sim Card build. Unfortunately I learned a lot of the stuff in a binge years ago and now am not too good at finding the stats on my phone.
I can reach the RGB screen. I am currently relearning everything to try to fix it, but any help would be greatly appreciated. I also booted into the RGB screen and connected to a computer but I didn't really see the computer recognize anything was connected.
Thank You
Click to expand...
Click to collapse
I believe it is some issue of bad sector on your SD card partition if the ROM is trying to access that. On the other hand, the easiest solution will be to follow:
Take out SD card:
1. Put in computer SD card slot
2. Download minitools partition wizard
3. Format card
4. Re-partition according to your need.
On phone:
1. Task 29
2. Magldr
3. CWM
4. Superwipe (wipe twice)
5. Install ROM again.
Hope this helps.

[Q] Reboot cycle after restart help

I got my gorgeous note 3 this morning and when i updated the phone with all my settings google play started to install my apps
Half way through the phone rebooted and got stuck in a reboot cycle
I couldnt stop the cycle so ended up hard resetting it via volume up power and home (or was it volume down !)
I then found that non of my apps would install even manually i got error 920
I worked out why and removed the device from my play device list
I then installed app of my apps and rebooted the phone to make sure nothing was lurking in the memory after i had installed them
I got stuck in a cycle again and had to pull the batter
I replaced the battery and it carried on
I ended up taking my battery out for 10 mins and then it turned on normally
I tested again and once again it started the reboot cycle
I have spoken to clove technology who advised me to return the phone for a replacement which i have done
my question is has anyone had this issue ? any ideas what caused it ??
The phone was hot but not boiling hot .. i thought it might be a rogue app but it did it again on my next reset with no apps
Love the phone but dissapointed with the handset i got - fingers x the next one is perfect
Thanks in advance
mancuk29 said:
I got my gorgeous note 3 this morning and when i updated the phone with all my settings google play started to install my apps
Half way through the phone rebooted and got stuck in a reboot cycle
I couldnt stop the cycle so ended up hard resetting it via volume up power and home (or was it volume down !)
I then found that non of my apps would install even manually i got error 920
I worked out why and removed the device from my play device list
I then installed app of my apps and rebooted the phone to make sure nothing was lurking in the memory after i had installed them
I got stuck in a cycle again and had to pull the batter
I replaced the battery and it carried on
I ended up taking my battery out for 10 mins and then it turned on normally
I tested again and once again it started the reboot cycle
I have spoken to clove technology who advised me to return the phone for a replacement which i have done
my question is has anyone had this issue ? any ideas what caused it ??
The phone was hot but not boiling hot .. i thought it might be a rogue app but it did it again on my next reset with no apps
Love the phone but dissapointed with the handset i got - fingers x the next one is perfect
Thanks in advance
Click to expand...
Click to collapse
I had a boot loop aswell.. but only while connected to a USB cable.. unplugged it and all was fine..
Sent from my SM-N9005 using Tapatalk 4
Fade777 said:
I had a boot loop aswell.. but only while connected to a USB cable.. unplugged it and all was fine..
Sent from my SM-N9005 using Tapatalk 4
Click to expand...
Click to collapse
My note 3 did it without the charger plugged in .
It was stock uk firmware completely untouched
I have the same issue. I have found that it is because of conflict between some apps (app), micro sd and sim card. If I put off the micro sd, its ok. If i turn on "Flight mode", its ok too. And when i have wiped my device it was ok too (with sd inserted) untill i had installed my apps (I have more than 300 of them, so its very difficult to identify, which of them causes this problem).
Hope together we will solve this problem
danushenko said:
I have the same issue. I have found that it is because of conflict between some apps (app), micro sd and sim card. If I put off the micro sd, its ok. If i turn on "Flight mode", its ok too. And when i have wiped my device it was ok too (with sd inserted) untill i had installed my apps (I have more than 300 of them, so its very difficult to identify, which of them causes this problem).
Hope together we will solve this problem
Click to expand...
Click to collapse
It's weird wonder what's causing it .... I wonder if it's an app
I've a new phone coming on Friday hope I have better luck
Never known an app cause a boot cycle
mancuk29 said:
It's weird wonder what's causing it .... I wonder if it's an app
I've a new phone coming on Friday hope I have better luck
Never known an app cause a boot cycle
Click to expand...
Click to collapse
Its not just an app fault. I think its because of a conflict between app-microsd-sim. I have installed all my apps to internal memory, and wthout sd or when turning on flight mode before rebooting (with sd connected) - its ok. But when sd is connected, all apps are instaled and 3g is on - it causes rebbot cycle.
danushenko said:
Its not just an app fault. I think its because of a conflict between app-microsd-sim. I have installed all my apps to internal memory, and wthout sd or when turning of flight mode before rebooting (with sd connected) - its ok. But when sd is connected, all apps are instaled and 3g is on - it causes rebbot cycle.
Click to expand...
Click to collapse
I'll test with installing all apps with no sad card
I'll report back
Thanks
I had the same issue and done a few tests.
What I can say is :
- when i used the phone for the first time there was no problem (SIM + SD CARD + 3G)
- when i updated the preinstalled apps (SIM + SD CARD + 3G) there was no problem
- once i installed all my apps reboot issue appeared.
I tried with or without SD CARD => No change
I tried with and with SD CARD but 3G off (Plane Mode) => No loop boot issue !
I thought maybe it was one of my apps so i restarted the phone in "Secured Mode", 3G on => reboot problem appeared again.
So this is a system (or maybe preinstalled and updated) app that's causing problem.
I think that only an updated firmware can resolve this.
One thing sure is that the booting time of this phone is really fast, about 10 sec after the Samsung logo.
So for now when i need to reboot i put the phone in plane mode first, expecting Samsung to correct this (I hope this is not an hardware issue or something fishy regarding the carrier zonning).
Anyway despite this issue i'am really glad to have this phone and haven't any regret buying it !
danushenko said:
Its not just an app fault. I think its because of a conflict between app-microsd-sim. I have installed all my apps to internal memory, and wthout sd or when turning on flight mode before rebooting (with sd connected) - its ok. But when sd is connected, all apps are instaled and 3g is on - it causes rebbot cycle.
Click to expand...
Click to collapse
Having the same problem...
Vodafone - SanDisk 64GB - apps internal mem
had the same problem too this method solved permanently. hope works for you guys too. I'm on stock non rooted Exynos SM-N900 GN3.
1- Backup your SD and External SD card
2- Format your External SD card without removing it from the phone.
3- Restart your phone in stock recovery mod
4- Wipe Data/Cache
5- Restart the phone .
---------- Post added at 01:15 AM ---------- Previous post was at 01:14 AM ----------
Don't forget guys you will lose all your data pics, everything!!!
Do it at your own risk!!!!
Taking the SimCard out works for me!
Nani said:
I had the same issue and done a few tests.
What I can say is :
- when i used the phone for the first time there was no problem (SIM + SD CARD + 3G)
- when i updated the preinstalled apps (SIM + SD CARD + 3G) there was no problem
- once i installed all my apps reboot issue appeared.
I tried with or without SD CARD => No change
I tried with and with SD CARD but 3G off (Plane Mode) => No loop boot issue !
I thought maybe it was one of my apps so i restarted the phone in "Secured Mode", 3G on => reboot problem appeared again.
So this is a system (or maybe preinstalled and updated) app that's causing problem.
I think that only an updated firmware can resolve this.
One thing sure is that the booting time of this phone is really fast, about 10 sec after the Samsung logo.
So for now when i need to reboot i put the phone in plane mode first, expecting Samsung to correct this (I hope this is not an hardware issue or something fishy regarding the carrier zonning).
Anyway despite this issue i'am really glad to have this phone and haven't any regret buying it !
Click to expand...
Click to collapse
THANX NANI !
I tried copying apps from external to internal.. no dice..
BUT this.. this works for me.. take sim card out boot phone up and put it in airplane mode.
Power down then insert sim card boot up.. presto.. boots properly..
If I forget to put it in airplane mode before reboot I just repeat this step.. works for me 100% of the time I tried it at least 5 times..
This will be fixed with a firmware update.. I too have a UK version... untouched.. imported.. I'm in Australia.
Fade777 said:
THANX NANI !
I tried copying apps from external to internal.. no dice..
BUT this.. this works for me.. take sim card out boot phone up and put it in airplane mode.
Power down then insert sim card boot up.. presto.. boots properly..
If I forget to put it in airplane mode before reboot I just repeat this step.. works for me 100% of the time I tried it at least 5 times..
This will be fixed with a firmware update.. I too have a UK version... untouched.. imported.. I'm in Australia.
Click to expand...
Click to collapse
we shouldnt have to do this , it should work out of the box without trying to get it to reboot without the loop
not impressed but hope samsung fix this asap
i have my second handset coming tomorrow , im going to install all of my apps on my handset before i install my memory card and see if that sorts it without the boot loop .. if not its going back for a refund and im getting something else (Not sure what else as nothing beats this beast)
Question for you guys and ladies who are having the issue what size memory card are you using ??
Notice that henklbr is using a 64gb memory card ... is everyone else ??
wonder if its an issue with the memory card size ??
another question did you all hve your memory card in when you were installing apps ??
has anyone tried to install without the card and then put it in once installed
i wonder if its to do with some of the apps going onto the memory card
its damn annoying and i hope samsung hurrys up and sorts it as i dont want to jump through hoops to restart my expensive smart phone
fethi2 said:
had the same problem too this method solved permanently. hope works for you guys too. I'm on stock non rooted Exynos SM-N900 GN3.
1- Backup your SD and External SD card
2- Format your External SD card without removing it from the phone.
3- Restart your phone in stock recovery mod
4- Wipe Data/Cache
5- Restart the phone .
---------- Post added at 01:15 AM ---------- Previous post was at 01:14 AM ----------
Don't forget guys you will lose all your data pics, everything!!!
Do it at your own risk!!!!
Click to expand...
Click to collapse
I am not rooted , do i wipe data and cache in the power up menu (power, home and volume up (or is it down) ???
never been rooted so have never seen wipe data cache before if you can help
I am not rooted too so you have to follow these steps
1- take the battery out ( just to make it happen correctly for next step)
2- Hold down the power + Vol. down + home button till you see samsung logo
3- Let go all the buttons and you will see a screen in black lying down android with exclamation mark on belly
4- From there you will have to move down the cursor with vol. down button and when the cursor is on wipe data / cache push the power button.
5- Say yes with the same type movements
6- Now you formatted your whole system and delete everything
7- Hope works for you and enjoy..
mancuk29 said:
I am not rooted , do i wipe data and cache in the power up menu (power, home and volume up (or is it down) ???
never been rooted so have never seen wipe data cache before if you can help
Click to expand...
Click to collapse
mancuk29 said:
I got my gorgeous note 3 this morning and when i updated the phone with all my settings google play started to install my apps
Half way through the phone rebooted and got stuck in a reboot cycle
I couldnt stop the cycle so ended up hard resetting it via volume up power and home (or was it volume down !)
I then found that non of my apps would install even manually i got error 920
I worked out why and removed the device from my play device list
I then installed app of my apps and rebooted the phone to make sure nothing was lurking in the memory after i had installed them
I got stuck in a cycle again and had to pull the batter
I replaced the battery and it carried on
I ended up taking my battery out for 10 mins and then it turned on normally
I tested again and once again it started the reboot cycle
I have spoken to clove technology who advised me to return the phone for a replacement which i have done
my question is has anyone had this issue ? any ideas what caused it ??
The phone was hot but not boiling hot .. i thought it might be a rogue app but it did it again on my next reset with no apps
Love the phone but dissapointed with the handset i got - fingers x the next one is perfect
Thanks in advance
Click to expand...
Click to collapse
It happened to me exactly as well.
I turned Off bluetooth, turned on again, and it stopped the problem ...
claudioita said:
It happened to me exactly as well.
I turned Off bluetooth, turned on again, and it stopped the problem ...
Click to expand...
Click to collapse
Do u have a memory card in ? If so what size ? If u did , did u install your apps with the card in ?
I wonder if it's a memory card issue
As there's not boot loop on "plane mode", I tried to reboot with "plane mode off" but without the SD Card => phone goes in boot loop.
So I tried withoud the SD Card and without the SIM Card => phone made 2 reboot before being able to stabilize.
So, after a hard reset, there's no issue even with SD card and SIM inserted ... But after software update and apps installed, phone goes insame ...
As SIM Card and SD Card are using the same slot, maybe there a "memory conflict" ... Something that could be related to the firmware (as from a fresh start there's no problem).
Nani said:
As there's not boot loop on "plane mode", I tried to reboot with "plane mode off" but without the SD Card => phone goes in boot loop.
So I tried withoud the SD Card and without the SIM Card => phone made 2 reboot before being able to stabilize.
So, after a hard reset, there's no issue even with SD card and SIM inserted ... But after software update and apps installed, phone goes insame ...
As SIM Card and SD Card are using the same slot, maybe there a "memory conflict" ... Something that could be related to the firmware (as from a fresh start there's no problem).
Click to expand...
Click to collapse
Something isn't right .. We shouldn't have to use flight mode to reboot
By the luck of it flight mode is the only safe way to do it.
Can u guys update which memory card and sim your using ,, wonder if issue with certain cards
I'm using 3uk sim and 64gb samsung sd

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