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S7 Snapdragon Battery Blues

Hey guys,
So I'm running a stock S7 (AT&T) and have read tons of threads about how to fix battery drain, etc etc. And I'm not finding any great result.
I've tried different debloats and dumbing down lots of system settings, but haven't found that sweet spot yet. I know disabling some things can end up causing further drain, so maybe I'm doing it wrong.
Has there been any definitive solution to fixing the Android System drain? Mine is constantly 30% or more drain at the end of the day.
Any help is greatly appreciated!

Firmware . Mostly older firmwares like apc8 or apf2.

fureedx said:
Firmware . Mostly older firmwares like apc8 or apf2.
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You mean rolling back my firmware would improve it?

CobraStrike said:
You mean rolling back my firmware would improve it?
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Click to collapse
If you updated to API2 you can't go back.

VenomMOD said:
If you updated to API2 you can't go back.
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Click to collapse
Damn. You always assume updating will FIX bugs. Haha.

CobraStrike said:
Damn. You always assume updating will FIX bugs. Haha.
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Click to collapse
API2 has an updated bootloader. You can't downgrade to any other version of the AT&T firmware unless it's Bootloader 4... This is what I meant when I said "You can't go back."

VenomMOD said:
API2 has an updated bootloader. You can't downgrade to any other version of the AT&T firmware unless it's Bootloader 4... This is what I meant when I said "You can't go back."
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Click to collapse
I just traded in mine for another to see if it improves anything... What firmware should i stick with?

CobraStrike said:
I just traded in mine for another to see if it improves anything... What firmware should i stick with?
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Stay on stock for awhile and try not to take any OTAs. There are multiple complaints about the latest updates causing a lot of battery drain.

VenomMOD said:
Stay on stock for awhile and try not to take any OTAs. There are multiple complaints about the latest updates causing a lot of battery drain.
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Click to collapse
Alright, will do. I'll post with an update. Thanks, man.

CobraStrike said:
Alright, will do. I'll post with an update. Thanks, man.
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Click to collapse
I also have a 930A , just dont update the bootloader , that is BL in odin . Rest you can install the latest using odin . People have been paying 15$ and buying AT&T updates from the persian site . Check S7 At&t forums

Here's the latest firmware for the G930A if you need it
http://forum.xda-developers.com/att...are-g930aucs4api2-bootloader-4-t3481957/page3

kuduku said:
I also have a 930A , just dont update the bootloader , that is BL in odin . Rest you can install the latest using odin . People have been paying 15$ and buying AT&T updates from the persian site . Check S7 At&t forums
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Dude... you're going to have to help me out, because I have no idea what you're talking about. Haha.

Looks like this one came on APE1. Should I stick with it and not update at all or what? Phone is unrooted.

CobraStrike said:
Looks like this one came on APE1. Should I stick with it and not update at all or what? Phone is unrooted.
Click to expand...
Click to collapse
You are on May update
to update download from link posted before
then use this http://forum.xda-developers.com/ver...-to-notes-root-install-xposed-unroot-t3411039 to go back to stock
Do exactly as its in this but change AP , CP and CSC as per new downloaded file .
You will be then on unrooted API2 but it has Android system battery drain

kuduku said:
You are on May update
to update download from link posted before
then use this http://forum.xda-developers.com/ver...-to-notes-root-install-xposed-unroot-t3411039 to go back to stock
Do exactly as its in this but change AP , CP and CSC as per new downloaded file .
You will be then on unrooted API2 but it has Android system battery drain
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Click to collapse
I'm not rooted at the moment... Wouldn't it just be easier to accept the OTA update?
I exchanged my device for a new one already.

CobraStrike said:
I'm not rooted at the moment... Wouldn't it just be easier to accept the OTA update?
I exchanged my device for a new one already.
Click to expand...
Click to collapse
OTA can be taken but that would upgrade your BL to 4 , then you are stuck on API only

kuduku said:
OTA can be taken but that would upgrade your BL to 4 , then you are stuck on API only
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Click to collapse
Ah, so the idea is to update without updating the bootloader, huh?
Is there any way to do this without root?
Sorry, man... I'm a complete noob and haven't rooted a phone in a while.

CobraStrike said:
Ah, so the idea is to update without updating the bootloader, huh?
Is there any way to do this without root?
Sorry, man... I'm a complete noob and haven't rooted a phone in a while.
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1 . yes
2. All without root only
3. Gave you all the links /Guide earlier
No requirement of rooting in this anywhere . Just using odin

kuduku said:
1 . yes
2. All without root only
3. Gave you all the links /Guide earlier
No requirement of rooting in this anywhere . Just using odin
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Click to collapse
Ah, alright. Thanks a lot, man. I'll do this when I get home. I keep getting pesky update requests!

I read everything over and i see what you're talking about. Download and flash all updates besides the BL which is the bootloader... But I'm trying to get away from the battery drain. Should I flash a previous firmware instead of the current for better battery life?
Also, what's the big benefit of having an older bootloader? So you can upgrade and downgrade at will?

Am I the only one not having nougat?

I am late to join galaxy s7, just recently got one on eBay. UK Vodafone locked. I had it unlocked couple of days ago. Expecting it to receive nougat ota. But nothing has happened yet. When will I get that? I want to try out nougat then decide whether to root.

Removing the network lock won't have any affect on which firmware your phone has, only that you can now use it on any network & so as is you would be waiting for Vodafone to release a VOD version of Nougat.
AFAIK There is only a BTU/Samsung generic version of Nougat available in the UK on the S7 right now so if you wanted it sooner you could flash to BTU.
Sent from my SM-G930F using Tapatalk

Thanks, Do I still need to root to flash the generic rom?

The update is available in India now! I have updated my S7 to Nougat VIA OTa

thotwielder said:
Thanks, Do I still need to root to flash the generic rom?
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Click to collapse
Root is never needed to flash ROMs

thotwielder said:
Thanks, Do I still need to root to flash the generic rom?
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Click to collapse
No, just need to flash the appropriate files with ODIN.
Sent from my SM-G930F using Tapatalk

Just confirmed with someone from work that his unlocked (when bought) phone also hasn't got nougat ota update. Just wondering anyone here from uk who actually got the update?

woodmj said:
Removing the network lock won't have any affect on which firmware your phone has, only that you can now use it on any network & so as is you would be waiting for Vodafone to release a VOD version of Nougat.
AFAIK There is only a BTU/Samsung generic version of Nougat available in the UK on the S7 right now so if you wanted it sooner you could flash to BTU.
Click to expand...
Click to collapse
Does flashing to a different rom, albeit a factory one, void warranty, trip knox or stop OTA updates? I recently bought a Galaxy S7 with Vodafone Spain (ATL) firmware (i don't live in Spain btw, I bought it from a store) and I'd like to flash the unlocked UK rom (BTU), so I can get Nougat, but i don't want to void my warranty.
Sent from my Galaxy S7 using XDA Labs

thotwielder said:
Just confirmed with someone from work that his unlocked (when bought) phone also hasn't got nougat ota update. Just wondering anyone here from uk who actually got the update?
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Did they buy their phone from Carphone Warehouse? Only if so they're probably on XEU rather than BTU.
Sent from my SM-G930F using Tapatalk

woodmj said:
Did they buy their phone from Carphone Warehouse? Only if so they're probably on XEU rather than BTU.
Sent from my SM-G930F using Tapatalk
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Click to collapse
It's from giffgaff, what are XUE and BTU? i do see the csc number on it: g930fxeu1bpk3 is this xeu?

thotwielder said:
Just confirmed with someone from work that his unlocked (when bought) phone also hasn't got nougat ota update. Just wondering anyone here from uk who actually got the update?
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Click to collapse
Im here waiting too. Unlocked UK and was on Beta updates. Feel like I've been forgot. Question is, can i flash the new BTU files without a wipe?

thotwielder said:
It's from giffgaff, what are XUE and BTU? i do see the csc number on it: g930fxeu1bpk3 is this xeu?
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Click to collapse
Yes, that is XEU. I read about the XEU firmware on a forum somewhere, he hasn't gotten the update yet. BTU is the unlocked UK firmware and the Nougat update for that is out.
Sent from my Galaxy S7 using XDA Labs

thotwielder said:
It's from giffgaff, what are XUE and BTU? i do see the csc number on it: g930fxeu1bpk3 is this xeu?
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Click to collapse
Indeed that's XEU (as the previous poster said)
XEU & BTU seem to both be the same but they have different CSCs which would explain why you're not getting the update as it's not out for XEU yet.
Sent from my SM-G930F using Tapatalk
---------- Post added at 06:36 PM ---------- Previous post was at 06:28 PM ----------
OAL77W said:
Does flashing to a different rom, albeit a factory one, void warranty, trip knox or stop OTA updates? I recently bought a Galaxy S7 with Vodafone Spain (ATL) firmware (i don't live in Spain btw, I bought it from a store) and I'd like to flash the unlocked UK rom (BTU), so I can get Nougat, but i don't want to void my warranty.
Sent from my Galaxy S7 using XDA Labs
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Click to collapse
Flashing a stock ROM eg from SamMobile won't trip Knox. Only customs ROMs & rooting do that. OTA updates should work fine if the right flashing procedure is followed.
Sent from my SM-G930F using Tapatalk

woodmj said:
Flashing a stock ROM eg from SamMobile won't trip Knox. Only customs ROMs & rooting do that. OTA updates should work fine if the right flashing procedure is followed.
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Thanks a lot, I was getting frustrated because I don't want my firmware to have anything to do with any carrier. Do you happen to know if there is a chance that Samsung's service can see that the BTU CSC is not the phone's original CSC and decline a warranty claim?
Sent from my SM-G930F using XDA Labs

When are we going to get it?! I'm from the UK with an unlocked S7 flat, bought from Carphone. And of course it's with XEU.

OAL77W said:
Do you happen to know if there is a chance that Samsung's service can see that the BTU CSC is not the phone's original CSC and decline a warranty claim?
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You could run into problems there if you needed to send the phone in for repair if the firmware is checked by the retailer or whoever they send their phones off for repair to. Personally would just flash it back to the original CSC before sending it off. Both CSCs would need to be on the same Android version though as from what I remember reading flashing an Android downgrade can brick your phone. I did read elsewhere someone managed to flash back to Marshmallow from Nougat as VoLTE wasn't working in Nougat as it turned out both were using the same boat loader but that's the only case like that I recall.
From experience Samsung's Smartswitch software doesn't look your phone up to establish which firmware it should have. It just goes on the current CSC if you were eg. to do an emergency firmware initialisation.
Sent from my SM-G930F using Tapatalk

woodmj said:
You could run into problems there if you needed to send the phone in for repair if the firmware is checked by the retailer or whoever they send their phones off for repair to. Personally would just flash it back to the original CSC before sending it off. Both CSCs would need to be on the same Android version though as from what I remember reading flashing an Android downgrade can brick your phone. I did read elsewhere someone managed to flash back to Marshmallow from Nougat as VoLTE wasn't working in Nougat as it turned out both were using the same boat loader but that's the only case like that I recall.
From experience Samsung's Smartswitch software doesn't look your phone up to establish which firmware it should have. It just goes on the current CSC if you were eg. to do an emergency firmware initialisation.
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Click to collapse
Oh, I see. If I flash back to my original CSC before handing it over, albeit both on the same version, is there a chance they might not notice? Thanks a lot btw.
Sent from my SM-G930F using XDA Labs

thotwielder said:
I am late to join galaxy s7, just recently got one on eBay. UK Vodafone locked. I had it unlocked couple of days ago. Expecting it to receive nougat ota. But nothing has happened yet. When will I get that? I want to try out nougat then decide whether to root.
Click to expand...
Click to collapse
Flash the firmware from on SamMobile it's probably better than upgrading via OTA as well.

OAL77W said:
is there a chance they might not notice? Thanks a lot btw.
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Click to collapse
Sorry, I've never been in that situation so I really couldn't say.
Sent from my SM-G930F using Tapatalk

update. i have successfully flash the nougat using the sammobile rom (btu). i followed this video step and step and it's very successful, it even keeps all the apps and data, just like an ota update would do. https://www.youtube.com/watch?v=EFV9WkZ9FfY&t=57s

Nougat is finally here

What do you know.. Nougat is finally rolling... Haven't received the ota yet but it's been posted on the support page
https://www.verizonwireless.com/support/samsung-galaxy-s7-edge-update/

PapaDocta said:
What do you know.. Nougat is finally rolling... Haven't received the ota yet but it's been posted on the support page
https://www.verizonwireless.com/support/samsung-galaxy-s7-edge-update/
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Click to collapse
ignore, just saw it.
Sent from my SM-T320 using Tapatalk

try again

Thanks for the information. Much appreciated. Do you know if they are gonna update the unlocked firmware (935u). Sure is nice without the bloat and the great battery life.
Sent from my SM-G935U using Tapatalk

Ironic, I just went back to PH1 last night to resolve some quirks with the T-mobile software I was having. Guess I will leave it alone and wait for the OTA to hit.

No update available yet...

Would love to have the flash files for Odin for a clean install

Syn Ack said:
Would love to have the flash files for Odin for a clean install
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Ditto.
Can't wait to flash my 935U to Verizon. Dat Wifi Calling and VVM.

Probably going to be a while unless someone gets the update soon

Verizon Upgrade tool, (nevermind, it formatted and when to marshmallow)

I don't have anything yet.

Ugh...

Is it pretty safe to say if we're on the T-Mobile Nougat we will need to do the "full stock firmware" and flash via odin?

scubasteve101 said:
Is it pretty safe to say if we're on the T-Mobile Nougat we will need to do the "full stock firmware" and flash via odin?
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Click to collapse
You need to be on stock software period...
Don't use that link though. I jumped the gun on that, it's just the beta downloads.

Will we be able to pick up the OTA if we're still running the Verizon Nougat beta?

Just got mine. Wiped and installed and upgraded.
JK.... PI3

Syn Ack said:
Just got mine. Wiped and installed and upgraded.
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Which version were you running previously? MM or Nougat beta?

No OTA yet here.

I have the Nougat update coming through on my phone right now. Have been running fully stock, latest OTA. Download started on its own.

Does FoxFi tethering still work?

J600F/DS

i saw on sammobile that pie is out for my phone but for ukraine my device is from the UAE would it differ if i flashed it through odin ? or should i wait for OTA

Suggestion for Update of J600F
I updated my J600F using firmware on Sammobile site, it was great but had a battery bug, so I reverted back to 8.0, but another update is released now and I hope a couple of bugs should have been fixed by now, so there is no issue in trying, and it's official too.

makave77i said:
i saw on sammobile that pie is out for my phone but for ukraine my device is from the UAE would it differ if i flashed it through odin ? or should i wait for OTA
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If your device is an international device, it might work. If it doesn't, just flash back to what you had before.
Sent from my LGL84VL using Tapatalk

Samsung Default Firmware

Is there a way to install stock firmware to remove all bloatware from 3UK? I bought a N20U from CEX and it shows as unlocked which it is but its bloated with 3UK and Im on O2... want to restore to standard Samsung Firmware. Not worried about changing CSC unless its possible
*** Argh, just noticed it has the terrible 3 Boot Screen Also ****
Cheers
Robert

redesignni said:
Is there a way to install stock firmware to remove all bloatware from 3UK? I bought a N20U from CEX and it shows as unlocked which it is but its bloated with 3UK and Im on O2... want to restore to standard Samsung Firmware. Not worried about changing CSC unless its possible
*** Argh, just noticed it has the terrible 3 Boot Screen Also ****
Cheers
Robert
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Have the same problem bro. I think cex just sell 3 unlocked

Nizam_A said:
Have the same problem bro. I think cex just sell 3 unlocked
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To be fair, the most recent phones I got from them were O2 Firmware but O2 dont put customer boot screens... this one is just ARGGHHHHH!!! lol

Bro you got any software updates recently. Seems 3 is slow with that too

Nizam_A said:
Bro you got any software updates recently. Seems 3 is slow with that too
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Nope... no updates, gonna try and flash official stock firmware
https://forum.xda-developers.com/ga...to/ath3-official-stock-fw-updateodin-t4143909

redesignni said:
Nope... no updates, gonna try and flash official stock firmware
https://forum.xda-developers.com/ga...to/ath3-official-stock-fw-updateodin-t4143909
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Click to collapse
Yh I used Odin to get the November patch. But idk about a stock flash. Don't wanna brick it

Nizam_A said:
Yh I used Odin to get the November patch. But idk about a stock flash. Don't wanna brick it
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I completed the stock firmware flash, but the 3 boot screen and apps still there... so I changed the CSC to BTU using this, then did an OTA update and all good... on a BTU CSC with stock samsung firmware OTA.
https://forum.xda-developers.com/galaxy-note-20-ultra/how-to/how-changed-csc-exynos-variant-t4163629

redesignni said:
I completed the stock firmware flash, but the 3 boot screen and apps still there... so I changed the CSC to BTU using this, then did an OTA update and all good... on a BTU CSC with stock samsung firmware OTA.
https://forum.xda-developers.com/galaxy-note-20-ultra/how-to/how-changed-csc-exynos-variant-t4163629
Click to expand...
Click to collapse
Would you mind telling me how?

Nizam_A said:
Would you mind telling me how?
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Click to collapse
Litterilly followed the link in the above post... to be honest, the important thing is to flash with odin the firmware in the link as it allows the change. Bit pernickety but overall got sorted and on Network Free firmware now

redesignni said:
Litterilly followed the link in the above post... to be honest, the important thing is to flash with odin the firmware in the link as it allows the change. Bit pernickety but overall got sorted and on Network Free firmware now
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Click to collapse
Can't seem to find any instructions
---------- Post added at 04:44 PM ---------- Previous post was at 04:07 PM ----------
redesignni said:
Litterilly followed the link in the above post... to be honest, the important thing is to flash with odin the firmware in the link as it allows the change. Bit pernickety but overall got sorted and on Network Free firmware now
Click to expand...
Click to collapse
Also can you do it without erasing?