@Rockchagin, seems you have Canadian model G930W, so please do not confuse other people with build numbers! Here we are on EU community and global model is G930F or G935F and bootloader version can be 1 or 2 (not 3,4 etc.).   @James0071, look at the f.e. BTU firmware list - https://www.sammobile.com/firmwares/galaxy-s7-edge/sm-g935f/BTU/ Latest Nougat (7.0) ROMs have "2": G935FXXS2DRC3, this is what you need. After downloading from updato.com and unpacking you can check that all files have the same pattern. ... View more

Oreo 8.1 is coming? https://forum.xda-developers.com/galaxy-s7/how-to/android-8-1-s7-t3841030 ... View more

Kind of important update. As part of my summer "science school project" , whole past week I was on different mobile network operator, name it "B", using prepaid SIM card. Same phone, same firmware, just new MNO. And the whole week I had great battery life. Not only sleep was 2% for 8h at LTE, but for example 1h of Spotify with all-new non-cached music consumed just 3-4% of battery at LTE. This is very sane and just great numbers. OK, back to my usual MNO "A". I asked support, why on they network I had battery drain and they suggested to change my SIM card for free. There is little chance that faulty or bugged SIM card can bring LTE drain problem but I agreed to give a shot. I've got new SIM card, installed it yesterday, upgraded firmware to the latest ERH6 and after 20h drain began. So, there is some incompatibility between my S7 and mobile network, leading to this 4G drain bug. It can be on my side (hardware or firmware part of modem or kernel or just Oreo firmware bug), on my MNO side (base stations firmware bug, bad tweaks, optimizations, network infrastructure flaws) and on both sides. Now I plan to permanently migrate to MNO "B". It's not bulletproof solution, I can face LTE drain in some other city or may be my "happy week" was just one week and things will get wrong soon. Will see. And my current advice to you - try other mobile network operator, just get prepaid SIM card. Or wait for a patch. PS. One my friend here has same Galaxy S7 and don't have LTE drain using MNO "C". So this is network depending bug. PS2. I suggest a new name for our topic: "Cell Standby / LTE / 4G battery drain on Galaxy S7 on Oreo". This is more precise than current "everything-drain". ... View more

@AntS, Welcome back to our corner of misery and desperation!   @AntS wrote: The software team have advised me to advise you guys to send them log files/error reports via the Members app (if you’re able) once the battery is almost empty, along with battery stats screenshots, to help them further analyse those specific instances. May I advise you to advise The Software team to initiate more direct communication channel?  I can generate any logs they need but my regional support morons are programmed to dump all error reports. Right here on this forum and on XDA, Reddit etc. are many users who will be happy to help with logs, screenshots and any step-by-step instruction. Also I among others can test any alpha/beta version of patch. Let us to help you to help us... something like that. ... View more

@dj1891 wrote: This thread used to be really active before the July updates, since then its died a death, I can only assume its fixed the issue for most people. For me the updates did ***** all.   There are few reasons: 1. It's summer ) 2. We already tried almost everything we can do without rooting, with attempts to collect data and reach Samsung support. @AntS promised to keep us with the news from software team, this was month ago 3. Rooting and installing different kernel or custom ROM is beyond scope of this forum 4. Not all people have this bug. Perhaps it's depend from the mobile operator network too 5. Not all people with bug realize it because many use WiFi mainly instead of 4G 6. After recent updates "Cell standby" in battery stats is covered by Android system etc   PS. For me ERGE update did not solve problem ... View more

After a week at July latest BTU firmware with ERG2 PDA and ERG2 modem I have to say bug is still here. As with post-EDR6 modems, there is no Cell Standby in the top of battery stats but high Android System % instead with Google Play Services, Cell standby and Device Idle following. First time bug activated after ~24h since flashing, then I had 4(!) good days, then bug hit again and again at random times. Also I had longtime voice call over whatsapp (constant LTE connection) and this was real disaster for battery. The only "good" thing - now it's possible to temporary fix it by switching to 3G and then back to 4G. Anyway, 4G is still non capable mode bacause of this bug.   BTW, I have an answer in Samsung Members (at last!), which is of course useless - if you have problems after update, make reset, if you still have problems - go to Service center. I think, they not ever read my message, they just classified it by keywords and give standard copy/paste answer.   In fact I'm tired of all these firmwares, modems, flashing, waiting updates, testing, hoping... without any glimpse of support from Samsung. Just checking about OnePlus3 (classmate of S7), they seems to fixed Cell standby bug in 5.01 firmware in December 2017 (!). And reading their forums as well as Xiaomi forums - there is real feedback between users and developers, as it should be. We, at the other side, have imitation of support. Devs doing something, but nobody knows what will be fixed and when, we don't even have aknowledge of this bug. Yes, there is new (again) ERGE build and new OTA planning in September (August in my Members app and 8.0 again) but... In the end i think I will just root my phone and install some custom ROM.   Three my friends bought Galaxy phones because of me. And next time they ask me about new phones I will recommend some other brand. There is choice. And there is no reason to pay extra fo phantom support and services.   Sorry for long message.   @Robotson, we are flashing official non modified firmware with official tool (Odin) so you don't need root/unlock anything and knox will not trigger. This is the same way as they do in service center. ... View more

ERG2 modem for G930F (Flat): https://anonfile.com/s5VeEbfeb5/CP_G930FXXU2ERG2_CP10089541_CL13895453_QB18811252_REV00_user_low_ship.tar.md5 ERG2 modem for G935F (Edge): https://anonfile.com/ZcYdE5fcbf/CP_G935FXXU2ERG2_CP10089532_CL13895453_QB18810069_REV00_user_low_ship.tar.md5   @Joakim, You need to flash 1 file only. You will not trigger Knox or lose warranty as long as you flash original not modified files. But after flashing different modem you will not receive OTA updates until you revert it back. Also JFI if you flash different Bootloader, your firmware will change status from Official to Custom and Samsung Pay/Secure Folder/Health... will refuse to work, again until you revert bootloader back. Flashing instructions at sammobile.com are pretty straightforward. You'll need to install drivers first: https://developer.samsung.com/galaxy/others/android-usb-driver-for-windows (install, reboot, connect phone) Entering Download mode is VOLUME DOWN + HOME BUTTON + POWER ... View more

@Joakim, you can download firmware, extract modem/CP file you want and flash it with Odin.   Current modem version check -  Settings/About/Software - Baseband ... View more

I want to point out that with latest July update some countries/CSC will get latest ERG2 modem and others - old ERD6 from the first Oreo release. For example, UK/BTU and Germany/DBT firmware contain ERG2 and Nordic/NEE and Poland/XEO - old ERD6. This may be important in our case. You can check it before downloading at updato.com, after clicking at firmware there is "more info" page and the last line is " Phone G930FXXU2ERG2". PDA can be ERG2 or ERG7 which is not big deal.   @Mesho, you can flash just different modem for your model, this will stop any OTA update and will not trigger knox or official status (secure folder etc will work). The point is - broken integrity of firmware will stop OTA. Or you can try to disable system updates in developer options first.   Also I think it's a good time to ask @AntS about current status of our case. One more month passed. Do you have some news from internal bugtrack system?   ... View more

I'm on latest BTU (July patch) since yesterday and almost 24h at 4G all was fine but now I see drain again and switched back to 3G. This is the same behaviour as before in my case - after restart or update with restart drain stopped for some time (max was few days) and then starts again. Phone was just on the table at the moment with good signal level and without activity (screen off).   Update: after switching to wi-fi, then 3G, I go back to 4G, without restart, just for test - and for 2h I don't have drain. At least it's something new, if I can shut down bug just by change modes back and forth. I need more time for testing anyway. ... View more

With ERG2 modem and LTE: first night (8h) - 2% discharge (as it should be) second night - 18% So, no magic bullet for me yet. ( ... View more

@SmashMix wrote: I couldn't find it on sammobile Use updato.com, enter model G935F and sort results by date. Free download and no speed limit. )   Flashed this morning ERG2 modem for my G930F, will report next week. Good luck! ) ... View more

@James0071 wrote: It's not helpful to dilute the gravity of this thread by making out that there's no issue. Clearly there is an issue and it needs to be solved. Just wanted to say the same. To all who don't have this bug, you are lucky but why you posting here and creating an illusion of staistics error? I don't care much about battery stats values - they are formal and getting more and more vague with every new Android version. We are talking about the math - real discharge rate. Some people have sharply decreased SoT time, I prefer to check idle discharge rate with the same experience - when the bug is active I have 10x discharge rate! Two weeks ago I've made an experiment with comparing logs of good sleep and bad sleep - just check it.   There are tons of post about this bug at international forums here at Samsung community and much more at Reddit, XDA and others. I'm sticking at 3G now because of this bug. I'm waiting for July security patch with hoping for fix also.   ... View more

@Kianda wrote: There are some new modem firmwares around that some users at XDA are testing already and the drain seems gone. I and others here already tested this new modem firmware, it fix battery stats for "cell standby" but not the bug itself, you can read a few pages back. And Android System drain is a newborn after cell standby drain "fix". :smileylol: But user at XDA in this thread mentioned that "Android System Drain fixed by flashing TGP Kernel". There is always hope. :smileyhappy:   @KornelB, perhaps we need some media attention like GSM Arena etc.? ... View more

@waaaly wrote: I flashed the bootloader and modem from earlier in this thread (EREO) and this fixed the cell standby issue, but I had similar battery life overall due to Google play services battery drain. After initial positive impression I have the same experience in my case. Yes, battery stats looks different now and Cell standby is no more major driver. But the bug with battery drain is still here - it can hit after 10h after restart or even few days but then I have discharge rate around 2.5%/h with screen off and this happens only at LTE/4G. And the battery stats now shows emphasis of Android system and Google Play services. Of course I want to test full firmware but this is it by now.   I've made an experiment using BetterBatteryStats (great app btw!) and created a dump files of 2 cases - 1 hour of good sleep (~0.3%/h discharge rate) and 1h of bad sleep (~2.5%/h) and then comparing them side by side. What I've found? Two dumps share almost the same deep sleep, awake and doze times, same CPU states, very close apps wakelocks, network usage and alarms. But in Kernel wakelocks there are 2 very distinct things: ssp_wake_lock: 51 in bad sleep vs 15 in good sleep ssp_comm_wake_lock: 234 in bad sleep vs 55 in good sleep I think these are linked to modem and modem itself is draining battery so I can't see difference in awake and CPU states numbers. @AntS, if this is appropriate, could you please add this short report to our case at software team? Because my message to Samsung Members is still unanswered and I don't think they are listening us. We (users) want to give feedback and logs but in reality support just ended with advice to make Factory Reset and go to service center. Or silence at all.   Also in processes tab I have 2 rather big differences, but this may be due to restart: android.hardware.sensors@1.0-service: Sys: 38s vs Sys: 2s spi1: Sys: 23s vs 2s   @Also I have to say that my friend has the same S7 @Exynos like me, no root, he uses OTA updates only, nothing magical. And he don't has this bug - nor Cell standby at Oreo nor any battery drain at sleep. The main difference between us - we use different mobile operators, so may be different equipment from the operator side make sense too. ... View more

@srg-b, @KornelB - Since allegedly fixed firmware is already in the wild for TW & HK regions, there is no reasons to worry about OTA for other regions. Or it is? Moreover, ERF4 is AFAIK 4th public release of Oreo for S7. First in May was for BTU only and gets bootloop, then second fixed went global, 3rd EREM become global too (current latest) and now started ERF4.   But if you want to try new build right now, you are free to flash BL/CP files with Odin, links for G930F(D) and G935F(D) are already posted in this thread. ... View more

Guys, you don't HAVE to flash the fixed modem. If you not in a hurry or not sure just wait for OTA - it's matter of weeks, I believe. Also keep in mind if you flash new modem you will NOT get any OTA updates until you revert original modem back or flash full firmware.   And yes, seems cell standby bug is fixed. :smileylol: ... View more

Just flashed Bootloader and Modem for my S7 G930F (flat) from latest G930FXXU2ERF4: https://androidfilehost.com/?fid=11050483647474827867 https://androidfilehost.com/?fid=11050483647474827872 Will report next week. Of course will update to full firmware when it will out for OXA multi region. :smileylol: ... View more

@mite_jan, Yes, there are new G930FXXU2ERF4 for S7 Flat also! For Taiwan and HK at this moment. https://www.sammobile.com/firmwares/galaxy-s7/SM-G930FD/ ... View more

@tadks, So, currently you have Mobile Network = LTE, Mobile data = On, Enhanced LTE Services = On and rather good battery life? BTW if you make restart everyday - this is a fix by itself. :smileyhappy:   Also I want to share for all who does not have Enhanced LTE Services/VoLTE in settings, that there are hidden activities: 1. Mobile Networks / EnhancedLteServices (com.samsung.networkui.usa.EnhancedLteServices). Yes it's have USA in the name but who knows - it's a simple checkbox "Enable HD Voice and other stuff if available". 2. Settings / RadioInfo - which is like *#4636 before. Here you can see in 3-dot menu IMS Status and some more info. In main screen there are 4 unnamed (in my case) toggles, the first is On and others are greyed out for me - greyed are for Enhanced LTE Services, as far as I know. 3. IMS Settings, which can't be accessed with permission denied. :smileysad:   You can make use of hidden activities with f.e. Shortcut Master or More Shortcuts apps or Activities widget in Nova Launcher. ... View more

@VSiam wrote Currently I disabled WITH UNNAMED APP :smileylol: Gear VR Service, com.sec.ims, IMS Logging & Settings (but not service). Will see... Same **it. After restart phone lost just 2% overnight but then something happened and battery starts drained with 2+% in hour with screen off. Swithed back to 3G, kind of stone age but at least battery OK. Still searching how to disable IMS completely. ... View more

@Carolll, I've heard disabling through ADB is no more... 1. By a very strange coincidence Gear VR Service uses the same amount of battery, network traffic and even RAM as IMS Service - it's according to Settings/Apps readings. 2. If I disable IMS Service, after restart there are repeated messages "IMS Service was stopped". Seems it has some startup helper, which needs to be disabled too. Also unfortunately I don't have in options VoLTE nor any special app from my mobile operator.   Currently I disabled WITH UNNAMED APP :smileylol: Gear VR Service, com.sec.ims, IMS Logging & Settings (but not service). Will see... ... View more

@Sylva1n wrote: Ok guys, this morning I managed to disable VoLTE (or 4G Call) not though my phone, but through my carrier's app. It was an option that was deactivable, just not under the phone's settings (with my firmware, no options to turn it on or off), so i think it was on all the time. I also disabled all facebook and Gear VR process. Yes, it's worth to try to disable VoLTE since it's Enhanced 4G LTE services and often referring for battery drain. I don't have VoLTE in settings too. However IMS service and logger (IP Multimedia Subsystem) upon which VoLTE works can be disabled with root or without root (with Package Disabler Pro+ or adhell3 or SABS). Will try too tomorrow. ... View more

Guys, since the cell standby bug is related to LTE data, anything you do for limit it (turn on WiFi or 3G, put apps to sleep, limit background data etc.) will work to some extent, but this is not a solution at all. It's just workaround to alleviate the problem, to make it less prominent. Currently if you need LTE/4G and good battery life, you can: 1. Downgrade to Nougat 2. Install custom ROM - f.e. Sac23 S9 Ported Rom for S7/S7Edge (look at XDA). Yes, on S9 cell standby bug was fixed! But it's not mean Samsung will bring this fix to S7/S8 too... ... View more

I've reported about this issue through website form support and Samsung Members App. Got email from support with standard recommendation to do Factory Reset, which i already did, when installed Oreo with Odin and CSC file. Samsung Members just keeps silence, zero answer from them. Nobody want to register case and have responsible for it, I'm disappointed. Samsung Galaxy S7, firmware G930FXXU2ERE8/G930FOXA2ERE8/G930FXXU2ERD6 PS. Seems latest Galaxy S9 Oreo don't have this bug, moreover users reported that ported S9 Oreo ROM to S7 also fix Cell standby bug in S7. ... View more

My Galaxy S7 Flat lost around 20% of battery overnight instead of 2% (AOD Off) due to "Cell standby" battery drain in Oreo 8.0. The phone is on LTE network with mobile data On. The only way to temporary stop battery drain is phone restart, which helps for some time. Phone on WiFi or 3G is much less prone to this bug. We need firmware fix ASAP! ... View more