yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] ghat01:
I bought and unlocked Galaxy S7 to get service on Tmobile network and the phone works fine but is an AT&T phone with

all the accompanying bloatware. I am in a bad cellular area for tmobile and depend on wifi calling as the signal is very weak.

The wifi calling on my purchased phone is grayed out which i found out through forums that AT&T has something to do with this.

I decided to root my phone and load firmware to Tmobile but have only found the process and firmware SM-G930T and not SM-G891T. The phone currently has SM-G891A, which is AT&T 's firmware. Baseband version G891AUCS4DRK1. I haven't been to find the right firmware for my phone. Can anyone help me? Thanks
[Android Q&A, Help & Troubleshooting] eduardvi995:
Are you sure you didn't confuse device version with firmware version? SM-G891A

Is not a firmware, it's your phone model, which is of course galaxy S7.

But anyway, there is not Tmobile firmware for that model. Only 930T as you said.maybe could be possible to port the rom.
[Android Q&A, Help & Troubleshooting] ghat01:
Can I use the firmware for the sm-g930t on the sm- g891a

My question is, can I flash the rom on a sm-g891a with firmware for a sm-930tin
[Android Q&A, Help & Troubleshooting] eduardvi995:
I wouldn't recommend to flash it yet. Processors should be the same, as well as the screen size,for flash a different rom.
[Android Q&A, Help & Troubleshooting] ghat01:
All the components are the same except for the battery size, hardened case and shatter proof screen
[Android Q&A, Help & Troubleshooting] eduardvi995:
If battery isn't the same, power consumption could burn the phone.
[OnePlus 3 Questions & Answers] JackJlo95:
Hi everyone,

I've got all the oneplus 3 stock, I've install the last TWRP but when I install Magisk or SuperSU (flashing on TWRP) nothing happens. And root checker say to me that there isn't any root.

I followed the "popular" guide to have a custom recovery and also for root but for me not working for root.

Any solution?
[OnePlus 3 Questions & Answers] Deleted member 5616867:
provide the logs from twrp when installing magisk, then somebody might be able to help you
[OnePlus 3 Questions & Answers] Deleted member 5616867:
There is no error in your logs as i saw it

You could try Magisk v17.3 here, and then update it via magisk manager later

or

Dirty flash the the full rom OOS zip along with magisk with TWRP, if fails then try clean (wipe everything first). Still fail then better to report in the magisk thread (or maybe somebody know better than me below)

Last successful rooting oos was with v17.3 on my phone.
[OnePlus 3 Questions & Answers] TNSMANI:
One of your attempts seems to have already modified the boot image. Better dirty flash or clean flash the ROM and then attempt flashing Magisk as the previous poster says. May be 17.3 and then update to 18.1 though for me, 18.1 straightaway works. Hope the Magisk Manager is also installed. Also open the Manager and check what it says.
[OnePlus 3 Questions & Answers] JackJlo95:
Ok it works for me, root is now on my OP3, I've just flash the 17.3. But now how to upgrade to 18.1? If I update on magisk manager, it upgrade only the app and no the complete magisk
[OnePlus 3 Questions & Answers] TNSMANI:
Don't you get the 'update available' text in Magisk Manager? Can you post a screenshot of the Manager?
[OnePlus 3 Questions & Answers] JackJlo95:
Here is it, if I tap on update the second message appears, and if I download and update it update only the app.
[OnePlus 3 Questions & Answers] TNSMANI:
Update the Manager first, after sometime the message for the Magisk will appear and you can install it.
[Xiaomi Redmi Note 4 Questions & Answers] nikhilmulavana21:
I have a mi note 4 which is totaly bricked. Only red led blinking when connecting to charge i tried flashing the fastboot rom in edl mode but i keep getting the error in flashing ping via firehouse "write time out" any solution????
[Xiaomi Redmi Note 4 Questions & Answers] androidbadboy:
Did You bought it in this state or did you flash something? If You flashed what was it?
[Sony Xperia Z Ultra] sev7en:
Good afternoon,

I purchased... And it's the 3th time eheh this jewel waiting the One.

I have the C6833 with Android 5.1.1 onboard and all the SONY lovable miniApps

I see we have now also Oreo for it but... Before I unlock the bootloader and I start the roadToModding can I have your feedback?

What did you suggest?

Cheers
[Sony Xperia Z Ultra] sev7en:
Another question... I installed Vanced but there is no overlay, did I have to enable anything about?
[Sony Xperia Z Ultra] GamingHero:
update your firmware for the latest version, download Recovery twrp (do not install version 3.1.1 or you cant use your touchscreen again) and try the luck has a kernel developer on the custom rom of the android Oreo and Pie and he may be able to help in the progress since the developer of these roms is no longer among us, Togari (xperia z ultra) has the same SOC of Honami (Xperia Z1)
[OnePlus 6 Guides, News, & Discussion] Totone56:
Hi everyone !

I haven't seen this info anywhere on XDA, at least on this forum, but i think everyone should know this.

Not trying to take credit in any way, because OP made a terrific job at researching and testing, just wanna spread the knowledge.

Basically : Charging your phone at night or leaving it charging even while at 100% for a few hours will have a big impact on how it behaves and how your battery holds up.

Quick explaination : Since Nougat, you don't get the App Optimization screen anymore on the first boot.

That's because Google has delayed it, and it triggers only in specific conditions : When the device is idle, fully charged, and still plugged in.

This optimzation allows to build the ART cache, which speeds up the system and apps, saving CPU power because it avoids using the JIT (Just In Time) compiler, thus, saving battery juice.

This also means wiping cache isn't going to help with your battery life, quite the opposite.

You'll see he made a test with other users, and the results are quite clear.

Here is a link to the post with detailled explaination and testing, thanks a lot to anupritaisno1 for all this info :

https://forums.oneplus.com/threads/...-and-battery-calibration-myths-busted.993896/

Forced the building through "cmd package bg-dexopt job" on my own OP6 running Pixel Experience, took like 15mn. SOT improved quite a lot.
[OnePlus 6 Guides, News, & Discussion] djcsurf:
Interesting read, thanks
[OnePlus 6 Guides, News, & Discussion] SOCOM-HERO:
What if you charge it at night while the phone is OFF?
[OnePlus 6 Guides, News, & Discussion] WillowTree:
Thank you for sharing this :laugh:

---------- Post added at 11:42 PM ---------- Previous post was at 11:41 PM ----------

Read the thread linked in OP.

The system works harder when you charge your phone while it's off.
[OnePlus 6 Guides, News, & Discussion] spartan268:
Very interesting read. Basically debunks majority of the stuff people preach to maximize phone performance and battery.
[OnePlus 6 Guides, News, & Discussion] Totone56:
If the phone is OFF it can't trigger the optimization task, this won't be beneficial.

In the article he actually made a test about this, you should read it !
[OnePlus 6 Guides, News, & Discussion] krakout:
Interesting, but... who claimed that clearing the cache helps with the *battery*?

Also, what happened to the old adage "never leave your phone plugged in" because it causes battery wear?
[OnePlus 6 Guides, News, & Discussion] Totone56:
A lot of people claim this, that you should clear the cache after an update, without clear reason why. At least we have a reason not to.

And this old adage is indeed old, like the "Fully discharge it for calibration". We're not in 2002 anymore. Modern technology had the nice idea to remember to stop the charge, and use Lithium batteries haha !

Leaving it plugged at 100% is not causing any wear. The post mentions a response from an electrical engineer, saying the battery is in fact on stand by and the phone is running off the charger only.
[OnePlus 6 Guides, News, & Discussion] casual_kikoo:
Debunked here
[OnePlus 6 Guides, News, & Discussion] krakout:
That's just one way to read it. Leaving it plugged in does not, indeed, mean that it keeps trying to charge. But once it goes down, it will charge up again. Also, supposedly, the fuller the battery is when charging, the higher the temperature and hence, the wear. Cannot attest to that, that's just how the argument goes.

Yes, but that's irrelevant. Totally different issue, I was not talking about calibration.
[OnePlus 6 Guides, News, & Discussion] Totone56:
Indeed. But from the looks of it, and what i've read in other places, it waits for it to drop a bit. If the battery is not used, it won't fall to 99% in a night, and won't be charged again until you unplug it. Kinda like when your phone is off. It's gonna be a long time before the battery goes down on it's own.
[OnePlus 6 Guides, News, & Discussion] krakout:
Interesting, gotta try it.

Still, does the <50, >70% not apply in terms of battery wear? I mean, even for straight-forward charges?
[OnePlus 6 Guides, News, & Discussion] Totone56:
I'd say yes, it still applies. It's a different topic ! Everithing said here is related to software and charging control, when this is more related to battery chemistry. But you're right, it's still true.

To sum it up :

- Charging above 70 or 80% and discharging under 30% (Thoses are the values i read about) is indeed not the best thing for your battery health on the long term.

- BUT, the superior battery life your phone will get with these app optimizations easily counter-balances it. If the phones lasts twice longer, it means 2 times less chaging cycles required, when you think about it (Ofc not accurate, but you see what i mean)

Best thing you can do, if you really want to get the best of both worlds, is staying in between those ideal values, and triggering the optimization manually via the Linux Terminal Emulator :D

Although, i don't think i'm not personally going to bother, i'll just charge my phone, use it, and charge it again in the evening.

Two days after triggering dexopt manually, without flashing or changing anything, using the phone the same way, i went from 16h idle/2h SOT at the end of the day with 50% remaining to 20h idle/2h15 of SOT with 70% remaining, that's quite a drastic improvement.
[OnePlus 6 Guides, News, & Discussion] krakout:
Ooh can you share more?I tried googling about triggering the optimization but came up empty...

Yes, that's logic in that, if optimization is so dramatic!

PS I meant 80, not 70, just as you mentioned.
[OnePlus 6 Guides, News, & Discussion] Totone56:
Yes, it's hard to get an info about this, wierd.

Run any terminal app on you phone, type "su" to ask for root permission, then enter "cmd package bg-dexopt-job" (without quotes).

It will run for a certain amount of time (between 10mn and more than an hour, depending of the number of apps you have installed).

When you get the shell back (A line appears under the last one to enter another command), it means it's complete.

If you wanna be sure, run it again, it will finish very fast, because the cache will be up to date (It still checks it, so it's not an instant completion).

Do it plugged in the charger, but with like 30% charge, maybe on USB so it doesn't get to 100% too fast, to avoid the awkward situation where it overlaps with the actual automatic background process doing the same thing haha :p

The phone can heat up a bit because the CPU is working quite a bit.

You can also run the command through an ADB shell on a PC, if you're not rooted.

Or just leave it charging during a night for once, works too ;)

Best way seems to let if charge for the night regularly though (Quote from the OP) :

"I just say overnight because the device being idle is a condition for the optimisation to begin

Also the optimisation is profile guided. If you were to AOT compile your entire base system it would take 4-5 GB off your storage and that is just the base system we haven't even considered the apps you'll install. Since optimisation generates huge optimisation files it is more sensible to only compile what is slow for JIT to do at runtime. This might seem weird but it takes the cache size down to less than 1 GB on most devices

In other words every time you use your phone the runtime sees what is slow and queues it up for optimisation the next time the condition is satisfied"
[OnePlus 6 Guides, News, & Discussion] krakout:
Wow. This should be pinned somewhere!

I'll do it in the terminal just for fun, but will also leave it (for my first time ever) overnight too.

Thanks, man!
[OnePlus 6 Guides, News, & Discussion] Totone56:
I think everyone should read this yes, even if it's just for the sake of knowing how things really work.

And i can confirm again, my battery life is so much better ...

A few days ago, going to work, listenting to Spotify on my motorcycle for 20mn, and checking my mails for 2m got me to 96% battery.

Yesterday, and today, same routine, an an hour after that i'm still at 100% ... That's very impressive.
[OnePlus 6 Guides, News, & Discussion] Stroky:
Really interesting.

Sadly the command does nothing on my device.
[OnePlus 6 Guides, News, & Discussion] Totone56:
Are you sure ? It doesn't display anything, that's true. But you'll know it's over when the shell returns.

Or you can juste leave your phone plugged for a night or two, same result.
[OnePlus 6 Guides, News, & Discussion] reppi:
My battery goes from 100% to ~97% within minutes without using it after unplugging the phone from the charger when charging overnight.

Why is that and how can I get rid of it? It occurs since a few days on custom rom as well as on oos now again.
[OnePlus 6 Guides, News, & Discussion] Totone56:
Occured to me too with other phones, but it doesn't with this one. Well it did, but since i took the habit to let it charge it night one or two times a week, it doesn't anymore. It get to 97% after around 10mn of browsing while drinking a coffe and 10m of Spotify via bluetooth on my ride to work. Maybe it's just your battery ? Or an app that triggers when unplugged and sips a bit of your battery ?

Maybe try Servicely by Franco. You can use it to remove Wakelock permissions from social media apps, and even shut them down on lock if you want. This app helped my battery life a lot, without hindering notifications. It's way cleaner and more efficient than Greenify or other similar apps.
[OnePlus 6 Guides, News, & Discussion] reppi:
Thx for the reply.

Downloaded and set up the app. Looks promising!

It didn't happen last week or so but it did suddenly when using a custom rom and now I get this behavior even on oos.

I already restricted almost all apps and no apps show up in battery graph at that time. Battery drain is back to normal after the initial drop.

I think I'll try to drain it completely and charge it to 100 overnight again. Never drained it completely before.
[OnePlus 6 Guides, News, & Discussion] Totone56:
Best setup imo is :

- Not restricting apps in the battery settings

- Removing wakelock permissions in Servicely, and forcing shut down on apps like Facebook

Don't forget, by default, "Force all apps to sleep on screen off" is checked on the main screen of Servicely. You'd want to untick this else you will see notification delays.

Don't discharge the battery completely, it will only hurt it, it's not beneficial in any way :)
[OnePlus 6 Guides, News, & Discussion] gorilla p:
Hey, I just wanted to pop in to make sure everyone is aware that it is not good to fully charge or discharge Li-Ion batteries. They are much different from the batteries of old that benefitted from this.

Ideally (but not practically) a battery would be kept between 45-55% charge.

For example, if you charge you battery to 85% every night and recharge it when it gets to 10%, your battery will last quite a bit longer than charging it to 100% and discharging it to 0%.

There is some information on this in the link below...

https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

There is also a really useful Magisk Module called ACC (Advanced Charging Control). Laptops are starting to come with this type of tool as well.

It let's you set the minimum and maximum that your battery will run at. It also sets intervals for it to stop charging momentarily while on the charger if the battery temperature gets to a certain point. All of these things improve battery longevity.

My battery will stop charging at 80% and my phone will shut down if it reaches 5% for example.

I hope this helps someone.
[OnePlus 6 Guides, News, & Discussion] whizeguy:
https://www.androidauthority.com/battery-myths-688089/
[OnePlus 6 Guides, News, & Discussion] Totone56:
Agreed, i too saw that article a few month ago, very instructive.

Tried the Magisk Module, works like a charm.

Gladly, the ART cache builing task described in the article linked in the OP doesn't need to be performed everyday, not even every week.

It's indeed not needed to charge the phone every night for it to perform better. Just once or twice.
[OnePlus 6 Guides, News, & Discussion] lazye53:
Sounds very complicated to me, what exactly should I do?

I'm on OOS 9.0.8. I'm using Windows, can you write briefly what I should do?

I'm quite complaining about my battery life. I am getting 3 hours 30 minutes of screen time during the day.
[OnePlus 6 Guides, News, & Discussion] dragos281993:
I've had my OP6 since June last year and it stays plugged in almost all the time when I'm at home, especially during the night.

I'm still getting over 4h sot and the results stayed very consistent to this day, with my usage staying relatively the same.

The thing is, when the phone reaches 100%, no more power is pushed into the battery, and the phone uses power straight from the cable. It lives off it, in other words. If you take out the battery with the phone still plugged in when it's fully charged, it won't turn off. That's also why the device doesn't heat up when it's at 100% and stays relatively cold even if you use it while plugged in.

So from my experience and from what an electrical engineer told me, charging it to max and keeping it plugged in all the time has no impact on the battery.

What degrades a battery very quickly is letting it fully discharge. If the battery dies upon reaching 0%, its lifespan is drastically shortened. A few full discharges and it may be done. My mum destroyed a GS8 battery in just 5 'tries' and the poor thing couldn't hold any juice in it for more than 20 minutes. And I'm talking about a 3 month old phone.

This should shine some light into the assumption that keeping the phone plugged in at all times degrades the battery. Letting it hit 0% does.

THEN there's the optimizations happening with the phone fully charged, like it's written in the OP.
[Xiaomi Mi A2 / 6X Questions & Answers] Sebastianm1:
What is using all this space, im counting everything together and I come to approx. 1,5 Gb. I don't see any app would have such an amount of date.

The phone is a week old, no heavy games.

I do have a lot of Mp3s but they are shown under Music and Audio.

Does anybody else have this issue, what could it be?

Thanks in advance

S
[Xiaomi Mi A2 / 6X Questions & Answers] Sebastianm1:
Cache is showed in the size of each app, nevertheless I deleted all apps cache and I don't have any offline download.

Other apps size is still the same
[Xiaomi Mi A2 / 6X Questions & Answers] yaardina:
try SD card analyst in es explore file manager
[Xiaomi Mi 8 SE Questions & Answers] IgorBAlves:
Good afternoon people!

After installing TWRP via Fastboot, when I restart my phone, the TWRP screen does not open!

It's only black screen!

Does anyone know how to solve it?

Thank you!
[Xiaomi Mi 8 SE Questions & Answers] lolo9393:
Please give details!!!We do not have your phone in hands!

What rom was installed?

What TWRP did you flash?

Are you able to reboot the rom?
[Xiaomi Mi 8 SE Questions & Answers] IgorBAlves:
Hi, thank you for help me!

I'm using the MIUI 10.2.2 Chinese version.

I installed the TWRP 3.2.3 yesterday!

Yeah, I'm able to reset my ROM.

Thank you again
[Xiaomi Mi 8 SE Questions & Answers] manhnl311:
Same problem, all activities using fastboot lead to black screen with line "press any key to shutdown"
[Xiaomi Mi 8 SE Questions & Answers] IgorBAlves:
Any your sensors are working?
[Xiaomi Mi 8 SE Questions & Answers] P3aceWalker:
Hi, I'm also experiencing a problem with TWRP. I flashed TWRP 3.2.3 1102 and 1217 but couldn't boot into the recovery. Custom rom currently using is xiaomi eu 9.2.21 flashed via 1102 but since then couldnt boot into it to update the rom.
[Xiaomi Mi 8 SE Questions & Answers] lolo9393:
Flash 1227 twrp. normally it MUST be installed before rebooting into the system rom.

https://drive.google.com/drive/folders/1IeCtb6vRO4CRe76s0BD_5TQiSnymPBTT

Hope it stick because some of us got troubles and were forced to reflash with miflash in order to recover.
[Xiaomi Mi 8 SE Questions & Answers] P3aceWalker:
Thanks, I was worried that 1227 would introduce more problems instead of solving them but I took the risk and it paid off. I can boot into the recovery after flashing it. One more question if you don't mind, can I directly flash the new updated rom without wiping so as to not lose any data. It won't cause any problems right?
[Xiaomi Mi 8 SE Questions & Answers] lolo9393:
No problem to weekly flash EU- DEV rom in dirty mode from direct download. (I systematically reject the OTA update because it often fails.)

And If a risk exist or any request for clean install, it will be notified at download page.
[Xiaomi Mi 8 SE Questions & Answers] IgorBAlves:
So, I must to reinstall the stock ROM in my cellphone and after I have to install this TWRP?
[Beetles] sonicyuan:
guys what u need is

http://www.filefarmer.com/2/dmc8742/

enjoy
[Beetles] smilo:
are there other sites with new ROM files (english/german) for the 6515?

thanks
[Samsung Galaxy J7 Questions & Answers] MrEckz:
As the title says i brick my phone samsung j7pro (sm-j730g/ds).. i tried rooting my phone

but i followed the wrong guide(stupid me) its for nougat and not for oreo8.1(my phone) and

when i restarted it (like on the video guide) im stuck in logo screen with “only official binaries can be flashed”.

And the worst is that when it restarted after i rooted it, it locked the USB DEBUGGING & OEM again.

-I tried flashing stock ROM using odin3 but it always fails..

-i tried samsung smart switch but it says "unsupported device"

Hope someone can help me.. or give me links to similar case coz i cant seem to find one..
[Samsung Galaxy J7 Questions & Answers] peter couniaz:
smart switch

you can try emergency recovery on smart switch on your PC !
[Samsung Galaxy J7 Questions & Answers] MrEckz:
I already tried that but it says “unsupported device”

Any other way to fix my phone?
[P8lite Q&A, Help & Troubleshooting] Kpsr94:
Hello,

Few months ago I broke my screen so finally yesterday I made a replacement of it. Producer sent me a new front case with a new screen in it and I simply had to replace all of the components. Everything went fine but now I realized there is like 5 seconds delay before the screen displays or shows anything. I click button to unlock the phone and the screen is still black for about 5 seconds BUT (that's quite interesting) I can still use touch sensor while these 5 seconds which means I can open up an app.

Did i break something inside my phone? Maybe hard reset would help?