[Q] unrooted phone just show logo & switch off back again - Android Q&A, Help & Troubleshooting

every time when i switch on my phone it just show the logo only & again goes back to switch off. i can go to recovery by pressing power button and volume down simultanously. there is 3 option recovery ,fastboot and normal. but nobody work . how to fix this problem? my phone is spice mi 354 (unrooted)

Factory reset u test, but u lose all apps, settings etc.
Gesendet von meinem Xperia SP

Related

Android 4.3

I recently updated my Galaxy S3 to the new android version 4.3. After the update started everything was normal until the phone shut itself off and did not turn on till now. i checked restarting it plus taking the batteries out and then putting it in nut the phone wont turn on. The phone just shows the samsung logo that glows now and then and nothing more. Please help me what to do and what has happened.
Try to repair on SEUS aplication.
Try factory reset from recovery.
To go to recovery: Long Press vol up + home button + power at the same time until samsung galaxy s3 boot text appear.
Sent from my GT-I9500

Cant reboot recovery!

Hey guys,
Iv got a stock US tablet Z, SGP311 on 10.4.1.b.0.109
Iv tried holding power and volume + while booting to get into stock recovery, iv tried tapping Vol+ a few times while booting, iv tried holdin Vol+ for 3 seconds and then hitting power......i cant get this damn thing into recovery!
Can someone help??
Snazarian said:
Hey guys,
Iv got a stock US tablet Z, SGP311 on 10.4.1.b.0.109
Iv tried holding power and volume + while booting to get into stock recovery, iv tried tapping Vol+ a few times while booting, iv tried holdin Vol+ for 3 seconds and then hitting power......i cant get this damn thing into recovery!
Can someone help??
Click to expand...
Click to collapse
There is no Recovery Mode in the XTZ's stock firmware. Here is how to access the available functions of the stock firmware.
1. Power On
Press and hold the POWER button until notification light flashes once, then release POWER button.
2. Power Off
Press and hold the POWER button until menu appears, then select "Power off" and "OK".
3. Restart
Restart device to turn off all running applications and to free up memory.
3.1. Simultaneously press and hold the VOLUME UP and POWER buttons for 10 seconds.
3.2. After the notification light flashes three times, release the buttons.
3.3. The device will power off automatically.
3.4. After the device is powered off, power on the device.
4. Reset
Reset device to its original settings to free up memory.
Don't forget to back up any important data saved on the device!
4.1. Go to Settings > Backup & reset > Factory data reset > Reset tablet.
5. Enable Safe Mode
5.1. Power off the device.
5.2. Press and hold the POWER button until the notification light flashes once.
5.3. Wait until the Xperia™ logotype disappears.
5.4. Press and hold the VOLUME DOWN button.
5.5. The device will restart in Safe Mode.
5.6. To exit Safe Mode, restart the device.
6. Flash Mode
6.1. Power off the device.
6.2. Connect a USB cable to the device.
6.3. Press and hold the VOLUME DOWN button.
6.4. Connect the USB cable to a computer.
6.5. Wait until the notification light flashes red-green once, then release VOLUME DOWN button.
6.6. To exit Flash Mode, disconnect the USB cable.
7. Fastboot Mode.
7.1. Power off the device.
7.2. Connect a USB cable to the device.
7.3. Press and hold the VOLUME UP button.
7.4. Connect the USB cable to a computer.
7.5. Wait until the notification light flashes red then solid blue, then release VOLUME UP button.
7.6. To exit Fastboot Mode, disconnect the USB cable.
8. Service Menu
8.1. Start the Contacts app.
8.2. Go into Settings.
8.3. Touch the blank area at middle bottom of screen for at least five seconds then stop touching screen.
8.4. "Enter service mode" button will be displayed.
8.5. Press the "Enter service mode" button.
8.6. Enter *#*#7378423#*#* (*#*#SERVICE#*#*).
8.7. Service menu will be displayed.
8.Notes.1. Enter *#*#4636#*#* (*#*#INFO#*#*) to display testing information.
8.Notes.2. Enter *#*#73556673#*#* (*#*#SELLMORE#*#*) to toggle Demo Mode activation on/off. WARNING! Activating Demo Mode will delete all personal content (photos, etc.) and settings.
How do you flash CM then ?
Cat McGowan said:
There is no Recovery Mode in the XTZ's stock firmware.
Click to expand...
Click to collapse
Thanks for telling ! I had been looking for this information for a long time.
Apparently, my service info says "bootloader unlock allowed: yes", I wonder if it means that I actually unlocked it or that the device would accept me to do it.
I moreover wonder how one can manage to install CM or root its device without using Recovery Mode. I saw on your signature you rooted your device. May I ask how you did that ?
ducasse.isidore said:
Thanks for telling ! I had been looking for this information for a long time.
Apparently, my service info says "bootloader unlock allowed: yes", I wonder if it means that I actually unlocked it or that the device would accept me to do it.
I moreover wonder how one can manage to install CM or root its device without using Recovery Mode. I saw on your signature you rooted your device. May I ask how you did that ?
Click to expand...
Click to collapse
It means your bootloader CAN BE unlocked.
To install a ROM, such as CM, you first unlock your bootloader, then move the ROM zip to your device. After that, you flash the included kernel from the zip with fastboot. Then, you boot into the included recovery from the kernel and flash the whole ROM.
Sent from my LT26i using Tapatalk
Felimenta97 said:
It means your bootloader CAN BE unlocked.
To install a ROM, such as CM, you first unlock your bootloader, then move the ROM zip to your device. After that, you flash the included kernel from the zip with fastboot. Then, you boot into the included recovery from the kernel and flash the whole ROM.
Sent from my LT26i using Tapatalk
Click to expand...
Click to collapse
I finally found a solution to my problem : I unlocked the device using flashtool-0.9.11's gui procedure, instead of flashtool's fastboot. It succeeded and I can successfully flash anything I want on the device.
I found your rational approach to my problem useful. It helped me isolate a solution. Thanks !
Hi there
I know this is an old thread. But my problem is same. I got this devide called sony experia tablet z lte ntt docomo x variant
My problem is that it got a lock screen and i have forgot the password. So i want to reset it.
But the problem is how do i do that, there isnt a recovery on this thing.
I was playing around with the buttons and i dont know how ,or which combination i pressed the tab booted to a factory reset screen but i wanst sure to reset that time so i exited from that and tablets lock screen appeared.
And now i cant figure out that how to do this again. Please help me
......
Hi there
I know this is an old thread. But my problem is same. I got this devide called sony experia tablet z lte ntt docomo x variant
My problem is that it got a lock screen and i have forgot the password. So i want to reset it.
But the problem is how do i do that, there isnt a recovery on this thing.
I was playing around with the buttons and i dont know how ,or which combination i pressed the tab booted to a factory reset screen but i wanst sure to reset that time so i exited from that and tablets lock screen appeared.
And now i cant figure out that how to do this again. Please help me
......
Press and hold the Power and Volume Down keys for 10 seconds.
The device will reset and restart.

samsung GT-p6800 not booting up

after official ICS upgrade to my samsung GT-p6800 , power button is not working for booting up the system. So when i did the reset to factory reset the device restarted but stuck in recovery mode but i cannot select any option because power button is not working. though i can scroll through the option using volume buttons.
Experts help me how to get back my system. Though i have the firware backup.
thanks in advance

Stuck in recovery without power button, help pls

A year ago, when I was still using my S3 I9300 power button was loose, all the time it was locking and unlocking screen. So what I did.. I removed power button physically from the board. Everything was ok, I used app from the store to lock the screen.
But now, I rooted my S3 with some pc software, and then I was about to install custom recovery, I restarted my phone to recovery (with quick boot app) and then I realized what I did.. So now I'm stuck in the recovery without possibility to ''click'' anything with power button. I can move up and down, but I can't select any option.
So what can I do? Worst part is that I can't even start phone to normal mode, I even left it over night to completely drain the battery, but when I turn it on, it goes to recovery again.
Any ideas ?????
Thx
EDIT: I open the phone and while I was in recovery on ''reboot system now'' option, I used small screwdriver and tap connection on the board where the power button was, there was a small spark (!) but phone restared to normal mode I installed CM 11 and twrp recovery with Rom Menager, and everything works fine now.

Galaxy S6 Edge Key Lights Not Turning On

The recent apps and back button lights do not turn on. When pressed, the buttons function as expected but do no light up.
During power up, the soft key lights up on the Verizon splash screen. So hardware wise the lights work, however, when the lock screen shows the lights are somehow disabled. And do not light up after logging into the phone.
Things Tried:
1) Factory reset through settings->backup and reset-> factory data reset
2) Factory reset through press and hold volume down + power button. Then selecting factory reset option
3) Clearing cache: power down -> press and hold volume up+power button + home key. Then selecting Wipe cache partition.
4) Went to Samsung tech support at Best Buy to have the phone's firmware re-flashed. This was recommended when I was transferred to Samsung Tech Support at Verizon help.
Firmware Tried:
G925VVRU4CPC2 (very first 6.0.1)
G925VVRU4CPK2 (second to latest)
G925VVRS4CPL3 (lastest)
Try APK from playstore called Galaxy Button Lights
Wysłane z mojego SM-G925F przy użyciu Tapatalka
Yasioo79 said:
Try APK from playstore called Galaxy Button Lights
Wysłane z mojego SM-G925F przy użyciu Tapatalka
Click to expand...
Click to collapse
I tried the app and non of the options light up the keys.
I have this problem too
check your power saving mode and turn it off..

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