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Hi people,
Today i've updated my galaxy s2 with Odin to 4.1.2
Everything looks great and works perfect but i have two problems.
My phone is getting hot and it drains my battery verry fast!
Please, can someone help me with this?
Thanks!
see if "media" shows up in your battery details.
Sent from the little guy
nielsiej96 said:
Hi people,
Today i've updated my galaxy s2 with Odin to 4.1.2
Everything looks great and works perfect but i have two problems.
My phone is getting hot and it drains my battery verry fast!
Please, can someone help me with this?
Thanks!
Click to expand...
Click to collapse
let the ROM settle, 2 or 3 battery cycle.
installs BBS, cpu spy and gsam battery monitor
check which app is consuming more battery
if it is media scanner, there is rescan media apk available to disable it.
calibrate the battery and monitor it.
nielsiej96 said:
Hi people,
Today i've updated my galaxy s2 with Odin to 4.1.2
Everything looks great and works perfect but i have two problems.
My phone is getting hot and it drains my battery verry fast!
Please, can someone help me with this?
Thanks!
Click to expand...
Click to collapse
i noticed that it gets hot too.. i was playing FF3 and it got realy hot near the camera area..
battery life is good for me.. 61% reamaining after 23h 55m 22s
z89x23 said:
i noticed that it gets hot too.. i was playing FF3 and it got realy hot near the camera area..
battery life is good for me.. 61% reamaining after 23h 55m 22s
Click to expand...
Click to collapse
Is that on stock settings and kernel how long was the display on time? I struggle to get 12 hours now on my phone
Plod72 said:
Is that on stock settings and kernel how long was the display on time? I struggle to get 12 hours now on my phone
Click to expand...
Click to collapse
yes all in stock.. well if understand your question correctly it was 1h 24m 54s..
also a media server 40m awake state..
Use Siyah kernel v6 beta4 instead of stock kernel, Plus it will give you root, cwm and SU.
TheATHEiST said:
Use Siyah kernel v6 beta4 instead of stock kernel, Plus it will give you root, cwm and SU.
Click to expand...
Click to collapse
im new in this.. where can i find a thread regarding changing the kernel ??
thanx..
I have a problem too. If i go to setting and storega. It is say calculating and cand go further.... tried to format internal memory and do factory reset but my files isn`t removed it`s stay there. Help me please how to solve the problem.
I dont wantto root my phone.
Is there a way to cool down my phone and boost my battery?
Its verry anoying.
olajos said:
I have a problem too. If i go to setting and storega. It is say calculating and cand go further.... tried to format internal memory and do factory reset but my files isn`t removed it`s stay there. Help me please how to solve the problem.
Click to expand...
Click to collapse
I`m able to fix my problem. Connected my phone to my PC and it is repaired to me. It was take around 1 hour to check and fix. After that I`m able to format over windows and now everything is working perfectly.
It's about the memory
I had the same problem with my S2 , it was getting hot and the battery life was shorter than norma, i has so little free memory on phone memory,so i deleted some apks and created some free space and the problem solved,my phone returned to it's normal state.i think that was the reason so check this out if it works. :good:
nielsiej96 said:
I dont wantto root my phone.
Is there a way to cool down my phone and boost my battery?
Its verry anoying.
Click to expand...
Click to collapse
Did you check what I adviced you to check.....?
Sent from the little guy
gastonw said:
see if "media" shows up in your battery details.
Sent from the little guy
Click to expand...
Click to collapse
Yes that is the boeman!
It says that it takes 53%
nielsiej96 said:
Yes that is the boeman!
It says that it takes 53%
Click to expand...
Click to collapse
Try this http://forum.xda-developers.com/showthread.php?t=2119907.
Sent from the little guy
Turn off google now its tracks where you every 20 sec and this eats battery very fast. It will use about 3-5% battery a hour. Also install deep sleep battery saver
Look a trick for saving battery this method disables background processes in settings go to development and down, limit background processes to 1 or 2
Sent from my GT-I9100 using xda premium
z89x23 said:
i noticed that it gets hot too.. i was playing FF3 and it got realy hot near the camera area..
battery life is good for me.. 61% reamaining after 23h 55m 22s
Click to expand...
Click to collapse
hot is normal and please tell me your ROM details .
Are you using the STOCK ROM ?
and WHICH ONE ?
i have the same problem and havent found a solution yet
Total ram as stated by HTC is 768mb RAM right?
But i go in apps --> running--> Total ram is just 586MB RAM
SOLVED: YES IT IS NORMAL! OTHER RAM IS USED IN RUNNING SYSTEM AND APPS!
I have huge battery drain after installing custom rom's and everything and charging is way too slow takes 5-6 hours to charge.
SOLVED: Just flash stock boot.img(stock kernel) IT worked for me IT DOESN'T MEAN THERE'S PROBLEM WITH CUSTOM KERNELS BUT IT WORKED FOR ME.
Because the left Ram is used to run whole system and apps running.
xpirt
cool.gautam said:
Total ram as stated by HTC is 768mb RAM right?
But i go in apps --> running--> Total ram is just 586MB RAM!
What iis this? Please Help me! Is it normal?
Click to expand...
Click to collapse
Yes it is normal! Total ram of desire x is 768 mb,but 586mb is available to the user out of 786Mb.!
gagangera said:
Yes it is normal! Total ram of desire x is 768 mb,but 586mb is available to the user out of 786Mb.!
Click to expand...
Click to collapse
Ok.... thanks for replies!
One more question guys: My battery drains very fast like in 1 hour while playing dead trigger 2 or any other game like subway surfers!
and charging time is also very huge it takes 2 hours to go from ~10 to ~40 then next 2-3 hours to reach 90 then next half hour to reach 100!
Is this allso normal? I am on battery saver all time , no sync , brightness very low, nothing! I'm on Fulmix v1.1
cool.gautam said:
Ok.... thanks for replies!
One more question guys: My battery drains very fast like in 1 hour while playing dead trigger 2 or any other game like subway surfers!
and charging time is also very huge it takes 2 hours to go from ~10 to ~40 then next 2-3 hours to reach 90 then next half hour to reach 100!
Is this allso normal? I am on battery saver all time , no sync , brightness very low, nothing! I'm on Fulmix v1.1
Click to expand...
Click to collapse
Ok.... thanks for replies!
One more question guys: My battery drains very fast like in 1 hour while playing dead trigger 2 or any other game like subway surfers!
and charging time is also very huge it takes 2 hours to go from ~10 to ~40 then next 2-3 hours to reach 90 then next half hour to reach 100!
Is this allso normal? I am on battery saver all time , no sync , brightness very low, nothing! I'm on Fulmix v1.1
Also its not only in gaming,....even if i browse 1.5 hour or like just use whatsapp for 1 hour.....battery drains completely.... ITS NOT SUDDEN! its happening from the day i rooted? did i do anything wrong? i have tried re0installing kernels and roms like 10-11 times from past month. IS IT BATTERY ISSUE OR ROOTING/CWM?
No its not normal.! Factory reset your phone & flash the Rom again via recovery! If it still continues contact the Rom developer or post on his thread! Or completely change the Rom & try some other rom! But I think there is no battery prob. in fulmix Rom cause I have tried it too!Btw try the above!
cool.gautam said:
Ok.... thanks for replies!
One more question guys: My battery drains very fast like in 1 hour while playing dead trigger 2 or any other game like subway surfers!
and charging time is also very huge it takes 2 hours to go from ~10 to ~40 then next 2-3 hours to reach 90 then next half hour to reach 100!
Is this allso normal? I am on battery saver all time , no sync , brightness very low, nothing! I'm on Fulmix v1.1
Click to expand...
Click to collapse
Sent from my HTC Desire X using xda app-developers app
xpirt said:
Because the left Ram is used to run whole system and apps running.
xpirt
Click to expand...
Click to collapse
gagangera said:
No its not normal.! Factory reset your phone & flash the Rom again via recovery! If it still continues contact the Rom developer or post on his thread! Or completely change the Rom & try some other rom! But I think there is no battery prob. in fulmix Rom cause I have tried it too!Btw try the above!
Click to expand...
Click to collapse
I have changed 3 ROMS already.
1qasdfghj said:
Sent from my HTC Desire X using xda app-developers app
Click to expand...
Click to collapse
What?
cool.gautam said:
I have changed 3 ROMS already.
What?
Click to expand...
Click to collapse
The RAM is not the internal memory or sdcard, it's the memory who runs all system and your apps. If you launch 5 apps you will have less Ram than running 1 app.
So don't care about it.
xpirt
xpirt said:
The RAM is not the internal memory or sdcard, it's the memory who runs all system and your apps. If you launch 5 apps you will have less Ram than running 1 app.
So don't care about it.
xpirt
Click to expand...
Click to collapse
Yes i understand sir.
xpirt please help me with the battery thing. its very annoying. Does it has to do something of way of flashing or something?
I rooted-->cwm--> wipe data and cache --> factory reset --> flash rom --> install boot.img of wifi thing. What is hboot and all?
cool.gautam said:
Yes i understand sir.
xpirt please help me with the battery thing. its very annoying. Does it has to do something of way of flashing or something?
I rooted-->cwm--> wipe data and cache --> factory reset --> flash rom --> install boot.img of wifi thing. What is hboot and all?
Click to expand...
Click to collapse
I think also battery drain is normal.
If not, flash stock boot.img and reflash stock Rom to see if it's still draining.
xpirt
xpirt said:
The RAM is not the internal memory or sdcard, it's the memory who runs all system and your apps. If you launch 5 apps you will have less Ram than running 1 app.
So don't care about it.
xpirt
Click to expand...
Click to collapse
xpirt said:
I think also battery drain is normal.
If not, flash stock boot.img and reflash stock Rom to see if it's still draining.
xpirt
Click to expand...
Click to collapse
Alright. I just flashed Stock boot.img and now charging seems to be fine. I will test more but i guess custom kernel has some issues!
Yes the issue was custom kernel only don't know why but it happened. Anyhow thanks everyone for help.
cool.gautam said:
Also its not only in gaming,....even if i browse 1.5 hour or like just use whatsapp for 1 hour.....battery drains completely.... ITS NOT SUDDEN! its happening from the day i rooted? did i do anything wrong? i have tried re0installing kernels and roms like 10-11 times from past month. IS IT BATTERY ISSUE OR ROOTING/CWM?
Click to expand...
Click to collapse
Dont factory reset, Uninstall deadtrigger2 or Deal with it...
Deadtrigger2 sapps battery like a motherf****r (check battery usage over a day of playing DT2 and you'll understand.)
I use internet for the whole day (3g) i have a custom status bar indicating battery status... Every time i reebot my phone it showes different battery status....
Ita very annoying... And my battery too drains very fast... Like before i alept it was 99% i woke up it was 81% even when the internet is off... Plz help me..
Sent from my HTC Desire X using xda app-developers app
samarth sathe said:
I use internet for the whole day (3g) i have a custom status bar indicating battery status... Every time i reebot my phone it showes different battery status....
Ita very annoying... And my battery too drains very fast... Like before i alept it was 99% i woke up it was 81% even when the internet is off... Plz help me..
Sent from my HTC Desire X using xda app-developers app
Click to expand...
Click to collapse
Same happened with me. As stated flash the stock boot.img (kernel) and give it a shot.
Hey, So i been using this phone 2 days now, And battery is not as good as i thought : S Not rooted & all stock. I havent been under 40 % battery yet ( might did not calibrate ), Should i ? How long until good battery kicks in ?? Cause i see some people get rly good battery from first use : S
Croize said:
Hey, So i been using this phone 2 days now, And battery is not as good as i thought : S Not rooted & all stock. I havent been under 40 % battery yet ( might did not calibrate ), Should i ? How long until good battery kicks in ?? Cause i see some people get rly good battery from first use : S
Click to expand...
Click to collapse
i am a heavy user and i get about 7 hrs of screen on with Z2,
-Android Phones auto calibrate the battery, Charge to 100% and normaly use untilll the phone turns off at 0, repeat this a couple time more
Envious_Data said:
i am a heavy user and i get about 7 hrs of screen on with Z2,
-Android Phones auto calibrate the battery, Charge to 100% and normaly use untilll the phone turns off at 0, repeat this a couple time more
Click to expand...
Click to collapse
i read thats bad for battery :S But now im trying to stream a movie online with stamina, 3 % down on 15 mins, Souds bout right ?
Battery life can depend heavily on a lot of different factors.
- reception - what carrier you use and what your average reception is can make a big difference
- settings - things like screen brightness, screen shutoff delay, etc etc
- apps - apps can make a huge difference, how many you have installed, what's running, and what's syncing
- usage - you're going to use wayy more battery looping a performance test than listening to music
Also, keep in mind a lot of the crazy battery life figures you see are people with basically EVERYTHING turned off. No syncing, stamina mode on, etc etc. For me, this isn't real life usage. By my rough estimates, I feel like I can get about 6-8hrs on screen time and about 2 days of standby time for my usage patterns.
just a note
i use Envi-Rom Stock+ simply because i removed all the apps i dont need and have tweaked the system
i usualy use wifi, with most things off exept mobile data LTE
on totaly stock rom i get 5hrs of screen on
deodexed 5hrs of screen on
debloated deodex 7hrs
the apps you have and how you use your phone affect your life as mentioned in the post above
Envious_Data said:
just a note
i use Envi-Rom Stock+ simply because i removed all the apps i dont need and have tweaked the system
i usualy use wifi, with most things off exept mobile data LTE
on totaly stock rom i get 5hrs of screen on
deodexed 5hrs of screen on
debloated deodex 7hrs
the apps you have and how you use your phone affect your life as mentioned in the post above
Click to expand...
Click to collapse
i game alot But atm it seems battery is fine =) was playing dead trigger, And according gsam it took 11 % per hr, Will find a thread to post my batter time after a discharge Wowa, That rom looked nice =) So next step is a recovery, Is it any diffrence to install roms on a sony then lg ?? Backup, wipe , install , reboot? Also i saw the build number was 402, im on 314? Can i just write over it or .. ? And for a custom recover = unlock bootloader ?
Croize said:
i game alot But atm it seems battery is fine =) was playing dead trigger, And according gsam it took 11 % per hr, Will find a thread to post my batter time after a discharge Wowa, That rom looked nice =) So next step is a recovery, Is it any diffrence to install roms on a sony then lg ?? Backup, wipe , install , reboot? Also i saw the build number was 402, im on 314? Can i just write over it or .. ? And for a custom recover = unlock bootloader ?
Click to expand...
Click to collapse
download rom
put on phone
install
factory reset/wipe
reboot
enjoy
non stock based roms require a unlocked bootloader
Envious_Data said:
download rom
put on phone
install
factory reset/wipe
reboot
enjoy
non stock based roms require a unlocked bootloader
Click to expand...
Click to collapse
But yours dont ?? Cause i was just looking up how to unlock bootloader =) You forgot backup?? But i wanna try a diffrent rom aslong as its stock But i cant figure out how to install a custom recovery ( if i need for this rom ) it seems im on a bad build number :S And shouldnt i factory reset/wipe before installing ?
Hi My android os and android system has the same or even higher battery usage than screen, than something must be wrong. I'll try to give u guys as much info as I can. I included wakelock detecotr, gsm battery, stock battery monitor and betterbattery screenshots, also alarm dump. This info is from only 8 % of battery drain, and I had light set to 0%, and was on WiFi, when I'm using mobile data and little bit of higher brigtness it is much worse. I've done everything from this guide:
http://forum.xda-developers.com/android/general/guide-extreme-battery-life-t3095884
Nothing helps. When using phone normally, browsing etc using mostly WiFi occasionally mobile data. And brigthness most of the time 0 to 7% and occasionaly 60 to 75 when outside. I have about 12 to 15 h with 3 to 3,5 SOT. I think I should squeeze little bit more, but I have no new ideas what I can do more, Can someone take a look on my info and maybe figure this out. Later I will post screenshot after more time on battery.
Galaxy S5, Lollipop 5.0 Phoenix ROM
Anybody?
nyorbee said:
Hi My android os and android system has the same or even higher battery usage than screen, than something must be wrong. I'll try to give u guys as much info as I can. I included wakelock detecotr, gsm battery, stock battery monitor and betterbattery screenshots, also alarm dump. This info is from only 8 % of battery drain, and I had light set to 0%, and was on WiFi, when I'm using mobile data and little bit of higher brigtness it is much worse. I've done everything from this guide:
http://forum.xda-developers.com/android/general/guide-extreme-battery-life-t3095884
Nothing helps. When using phone normally, browsing etc using mostly WiFi occasionally mobile data. And brigthness most of the time 0 to 7% and occasionaly 60 to 75 when outside. I have about 12 to 15 h with 3 to 3,5 SOT. I think I should squeeze little bit more, but I have no new ideas what I can do more, Can someone take a look on my info and maybe figure this out. Later I will post screenshot after more time on battery.
Galaxy S5, Lollipop 5.0 Phoenix ROM
Click to expand...
Click to collapse
It seems that you are affected by the MobileRadioActive bug. Use this Xposed module to solve the issue.
orville87 said:
It seems that you are affected by the MobileRadioActive bug. Use this Xposed module to solve the issue.
Click to expand...
Click to collapse
Ok, I installed it, but it seems that battery drain is even worse But it's been just a couple of minutes, I'll wait couple of hours and let you know. Thanks for the reply!
orville87 said:
It seems that you are affected by the MobileRadioActive bug. Use this Xposed module to solve the issue.
Click to expand...
Click to collapse
I guess this was not the case for me, I still have huge drain, I' posting new screenshots.
nyorbee said:
I guess this was not the case for me, I still have huge drain, I' posting new screenshots.
Click to expand...
Click to collapse
Use Better Battery Stats to produce a idle log file and upload it here. A guide about how to get such a log file can be found in post #6 of this thread. You might also want to apply all settings from this guide to decrease your battery drain.
orville87 said:
Use Better Battery Stats to produce a idle log file and upload it here. A guide about how to get such a log file can be found in post #6 of this thread. You might also want to apply all settings from this guide to decrease your battery drain.
Click to expand...
Click to collapse
I have all settings from this guide Ok, I'll try to make idle log, and let you know.
nyorbee said:
I have all settings from this guide Ok, I'll try to make idle log, and let you know.
Click to expand...
Click to collapse
Ah, I see. Then grab the idle log file and upload it to the Extreme Battery Life thread. The OP of this thread, v7, is quite active and might help you with your issue.
nyorbee said:
Hi My android os and android system has the same or even higher battery usage than screen, than something must be wrong. I'll try to give u guys as much info as I can. I included wakelock detecotr, gsm battery, stock battery monitor and betterbattery screenshots, also alarm dump. This info is from only 8 % of battery drain, and I had light set to 0%, and was on WiFi, when I'm using mobile data and little bit of higher brigtness it is much worse. I've done everything from this guide:
http://forum.xda-developers.com/android/general/guide-extreme-battery-life-t3095884
Nothing helps. When using phone normally, browsing etc using mostly WiFi occasionally mobile data. And brigthness most of the time 0 to 7% and occasionaly 60 to 75 when outside. I have about 12 to 15 h with 3 to 3,5 SOT. I think I should squeeze little bit more, but I have no new ideas what I can do more, Can someone take a look on my info and maybe figure this out. Later I will post screenshot after more time on battery.
Galaxy S5, Lollipop 5.0 Phoenix ROM
Click to expand...
Click to collapse
Already checked if other users who have this ROM installed got the same problem?
Fr3eak99 said:
Already checked if other users who have this ROM installed got the same problem?
Click to expand...
Click to collapse
ROM developer and ROM community are not very helpfull...
nyorbee said:
ROM developer and ROM community are not very helpfull...
Click to expand...
Click to collapse
I searched in the thread from your ROM and yes ... You are not the only one with battery drain problem and yes, they are not helpfull ... You can try another ROM if you want but please create a backup in your recovery so you can switch back to phoenix rom if you still have the problem.
Fr3eak99 said:
I searched in the thread from your ROM and yes ... You are not the only one with battery drain problem and yes, they are not helpfull ... You can try another ROM if you want but please create a backup in your recovery so you can switch back to phoenix rom if you still have the problem.
Click to expand...
Click to collapse
I've just flashed Omega ROM and will see, thank you very much for help!
nyorbee said:
I've just flashed Omega ROM and will see, thank you very much for help!
Click to expand...
Click to collapse
Okay, let us know the results please.
Fr3eak99 said:
Okay, let us know the results please.
Click to expand...
Click to collapse
Sure
Unfortunately, especially after upgrading to Lollipop battery Samsung Galaxy Alpha G850F discharged very quickly and not know what to do :
I have:
1 ) disabled as much as possible ( when not in use ) and the BT GPS
2 ) tried to replace the original battery with a 2850mAh of ( so they say ) not original
3 ) tried to disable both S Voice that Google Now they say consume a lot
4 ) Reduced brightness and battery life activation screen in 15 sec .
The term does not arrive in the evening since it from the detachment at 8:30 in the morning, I get up at 17.30 scarce not use it to call , remaining in the wifi network but navigating virtually nothing .
I'm really confused and do not know what to do . If anyone has any advice and can help me or I know that sooner or later will change phone .
Thanks a lot
frankge973 said:
Unfortunately, especially after upgrading to Lollipop battery Samsung Galaxy Alpha G850F discharged very quickly and not know what to do :
I have:
1 ) disabled as much as possible ( when not in use ) and the BT GPS
2 ) tried to replace the original battery with a 2850mAh of ( so they say ) not original
3 ) tried to disable both S Voice that Google Now they say consume a lot
4 ) Reduced brightness and battery life activation screen in 15 sec .
The term does not arrive in the evening since it from the detachment at 8:30 in the morning, I get up at 17.30 scarce not use it to call , remaining in the wifi network but navigating virtually nothing .
I'm really confused and do not know what to do . If anyone has any advice and can help me or I know that sooner or later will change phone .
Thanks a lot
Click to expand...
Click to collapse
BEAST MODE ON = ALL FUNCTION ARE ON...I get one day of use at full max. So you are talking nonsense.
I spot a troll under your username.
UniversalKID said:
BEAST MODE ON = ALL FUNCTION ARE ON...I get one day of use at full max. So you are talking nonsense.
I spot a troll under your username.
Click to expand...
Click to collapse
Absolutely not. Why troll? If someone can me say what could be the cause of this battery drain....I'll appreciate
frankge973 said:
Absolutely not. Why troll? If someone can me say what could be the cause of this battery drain....I'll appreciate
Click to expand...
Click to collapse
Ok, first you need to do a factory reset. Backup your data before doing it.
UniversalKID said:
Ok, first you need to do a factory reset. Backup your data before doing it.
Click to expand...
Click to collapse
Before doing this there must be another solution..... I've rooted the device bujt BEFORE rooting it, the problem was the same....
Some other suggestions?
frankge973 said:
Before doing this there must be another solution..... I've rooted the device bujt BEFORE rooting it, the problem was the same....
Some other suggestions?
Click to expand...
Click to collapse
Try GREENIFY.
Root + Xposed Framework + Greenify + Amplify can help you save a lot of battery.
My phone is using original battery with 0.8%/h battery drain at night time with mobile data and wifi always on.
mnirun said:
Root + Xposed Framework + Greenify + Amplify can help you save a lot of battery.
My phone is using original battery with 0.8%/h battery drain at night time with mobile data and wifi always on.
Click to expand...
Click to collapse
Xposed framework impossible to install on Samsung Lollipop at the moment.... for Alpha I've read so. Otherwise can you post me some link to guides for doing that?
Thanks
frankge973 said:
Xposed framework impossible to install on Samsung Lollipop at the moment.... for Alpha I've read so. Otherwise can you post me some link to guides for doing that?
Thanks
Click to expand...
Click to collapse
It's possible, you can install Xposed on stock Touchwiz ROM.
Here is a nice guide -> http://forum.xda-developers.com/galaxy-alpha/themes-apps/how-to-xposed-touchwiz-t3132193
mnirun said:
It's possible, you can install Xposed on stock Touchwiz ROM.
Here is a nice guide -> http://forum.xda-developers.com/galaxy-alpha/themes-apps/how-to-xposed-touchwiz-t3132193
Click to expand...
Click to collapse
So I cannot maintein the original Samsung ROM with that look&feel etc.?
frankge973 said:
So I cannot maintein the original Samsung ROM with that look&feel etc.?
Click to expand...
Click to collapse
Install Xposed Framework does not modify look and feel of Touchwiz ROM.
mnirun said:
Install Xposed Framework does not modify look and feel of Touchwiz ROM.
Click to expand...
Click to collapse
So you mean that I don't loose my settings, pictures, videos, music and standard Samsung android look & feel?
frankge973 said:
So you mean that I don't loose my settings, pictures, videos, music and standard Samsung android look & feel?
Click to expand...
Click to collapse
Relax ☺
frankge973 said:
So you mean that I don't loose my settings, pictures, videos, music and standard Samsung android look & feel?
Click to expand...
Click to collapse
Everything stay the same.
You can make a nandroid backup via custom recovery (TWRP) before doing some modification with your phone.