Database Users

S7 edge problems

So I just wanted to address some issues that I've had in the short time that I've had my galaxy s7 edge.
Notifications: they seem to come late sometimes, for example, I would receive the snapchat notification or twitter notification ten minutes after the other person had already sent something.
Heat: So I don't know if this is normal, but my phone seems to get warm when using the fast charger. Also, just throughout of my daily usage, the phone would also get pretty warm, especially on the right side of my phone where the edge is. I am wondering if I should factory reset to see if this will fix it.
Battery: I've been reading the battery forum a lot, and people seem to be getting pretty good battery life, so I'm pretty disappointed that I couldn't get battery life like them. I did some math, and today I got 3.5 hours of SOT with my phone being on use for 14 hours. My battery dropped 76 percent in total the whole day.
Anyone else getting similar problems?

Battery Drain issue solved ....

So a quick backstory on my S7 edge experience. This is my second go around with the S7 edge as the first was plagued with bad battery life and sluggish if not defective overall experience. Two days ago I decided to jump my S6 edge + (great phone) for a S7 edge ....again. Wanted to see if something was different as all the rave reviews could not be wrong and maybe I just got a lemon. Well low and behold I again started to experience strange issues with the S7 edge such as:
⏺Bad battery life ( less than half a day with moderate use)
⏺Strange notification bar message (call forwarding for video calls active)
⏺Sluggish performance
What was causing this Strange behavior?.....
Turns out it was most likely caused by a bad car charger which overheated the charging circuit or some aspect of the phone. Must have happened the first time and never realized but the second time I put two and two together. Lesson learned her is if you are not seeing any increase in battery percentage while rapid charging and the phone is getting hot ...you may have damaged the phone and have a bad charger. Currently this is the 3rd S7edge and it is rapid charging cool to the touch.
Hope this helps.
Sent from my SM-G935T using XDA-Developers mobile app

Sir , Did your android system appear on top of your battery usage as well?

I had the same 3 symptoms but I solved my issue with doing a factory reset and starting my phone from fresh, now my battery is back to lasting more than enough for a day, 5+ hrs of SOT average since I did that.

Anyone tested how much battery AOD uses?

Anyone tested this themselves? Didnt see it mention in any reviews.

I don't know but it must use close to nothing; the thing is to darn dark on this thing, I can't barely see it. It was a lot brighter in my Note 7, it's useless now.

The G Dept. said:
I don't know but it must use close to nothing; the thing is to darn dark on this thing, I can't barely see it. It was a lot brighter in my Note 7, it's useless now.
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Not dark at all on my screen. I don't seem to see it moving around at all, though which is concerning to me.

From https://www.notebookcheck.net/Samsung-Galaxy-S8-Plus-SM-G955F-Smartphone-Review.213438.0.html :
The Always-On display is pretty efficient. The smartphone only consumes 0.13 Watts during standby and 0.23 Watts (on average) with the Always-On display.
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maz-b. said:
From https://www.notebookcheck.net/Samsung-Galaxy-S8-Plus-SM-G955F-Smartphone-Review.213438.0.html :
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Is it moving on your screen? Didn't move on mine in the 40 mins I left it on so I turned it off.

Semantics said:
Is it moving on your screen? Didn't move on mine in the 40 mins I left it on so I turned it off.
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Yesterday it has moved at least two times

On the S7 edge the guys at samsung told me that 1 hour usually takes about 1 percent of battery. Don't know wether the S8 uses the same amount or not. That doesn't sound that much, but at the end of the day this would be something about 10-20 percent.
Gonna get my S8 (hopefully) today - so I can test it.

mmeidl78 said:
On the S7 edge the guys at samsung told me that 1 hour usually takes about 1 percent of battery. Don't know wether the S8 uses the same amount or not. That doesn't sound that much, but at the end of the day this would be something about 10-20 percent.
Gonna get my S8 (hopefully) today - so I can test it.
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most of what i read people said it was closer to 1% every 2 hours on the s7.

I've got it on
All day
All night
Battery life, while not amazing, hasn't been affected by aod

I keep it on. Most of the time the phone is in a belt pouch and the AoD shuts off when it is in a pocket like environment. The only time it is really on for an extended period of time is while sitting on the wireless charger.

I keep mine on too. Here's my battery life. That's Bluetooth, location, always on display, and high performance settings on.
2 Gmail accounts that are synced (constant work email), Facebook, messenger, GroupMe, Instagram, Snapchat. A few text messages since most of my chats goes through social media.

It is a shame (as far as i can tell) that the battery usage meter does not separate "screen" with "always on display".
My thinking is that the OLED screen is not back lit so it is only each individual pixel using power and since the screen is mainly black this is not a lot.
When the S8 is in a brightly lit room the always on display is brighter lit so will use more power. In a dark bedroom it will use less.

AoD Informal Testing
The official Samsung line is that AoD uses up about 1% of the battery per hour. In other words, AoD will use up about 24% of your battery in 24 hours. That seems to be close to my personal experience with the S7, but it's hard to say. I believe my phone uses about 2.5% of the battery per hour with AoD off, and about 3.5% / hour with AoD turned on. I'm still getting over 24-hours of battery life per charge with AoD on.
There are some comments here along the lines of "it can't use too much battery, because it's so dim" or "it's in my pocket most of the time, so it's not using power." Keep in mind that some of the battery AoD uses is that it turns the proximity and light sensors on every minute or so to determine what the brightness of the display should be, and whether it should be on at all. AoD mode likely uses slightly more battery even if the phone is face down on a desk and not displaying anything.
Some people have said they don't use AoD because they can't see the pixels moving and they're worried about screen burn. I believe the pixel movement is very subtle, and the image doesn't move all around the screen. It just moves enough so that the same pixels are not always being used. When you unlock the phone, then lock it again, the AoD will appear in a completely different spot on the screen and then shift subtly around that same spot. I've been using AoD on and off for 2 years with my S7 and I can't see any trace of screen burn.

Lauren Craig Stephen said:
The official Samsung line is that AoD uses up about 1% of the battery per hour. In other words, AoD will use up about 24% of your battery in 24 hours. That seems to be close to my personal experience with the S7, but it's hard to say. I believe my phone uses about 2.5% of the battery per hour with AoD off, and about 3.5% / hour with AoD turned on. I'm still getting over 24-hours of battery life per charge with AoD on.
There are some comments here along the lines of "it can't use too much battery, because it's so dim" or "it's in my pocket most of the time, so it's not using power." Keep in mind that some of the battery AoD uses is that it turns the proximity and light sensors on every minute or so to determine what the brightness of the display should be, and whether it should be on at all. AoD mode likely uses slightly more battery even if the phone is face down on a desk and not displaying anything.
Some people have said they don't use AoD because they can't see the pixels moving and they're worried about screen burn. I believe the pixel movement is very subtle, and the image doesn't move all around the screen. It just moves enough so that the same pixels are not always being used. When you unlock the phone, then lock it again, the AoD will appear in a completely different spot on the screen and then shift subtly around that same spot. I've been using AoD on and off for 2 years with my S7 and I can't see any trace of screen burn.
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The pixels do most def move I have witnessed it....
I use my aod when its dark normally between like 8 pm and like 1 times im up at night other than that I dont use it
I read some where on the gear watches about aod and the strict limits samsung has in place to prevent burn and battery waste.
As fast as these devices can charge battery should not be an issue for any one any more lol

Verizon S7 Edge terrible battery life

First time posting. Bought two new S7 Edge phones in late November. My wife can go a day or two or three without charging, similar use with hers. I am lucky to get maybe 6 hours ever since I bought it. I don't use it for gaming, I use social media, email, news, some music, take a lot of pics of the kids, Photoshop, reading, research, etc. My phone is my laptop replacement.
I installed CPU-Z a while back because my phone is often hot. Sensor readings often exceed 150° F with battery temps exceeding 105° (with very little activity).
I've tried charging with rapid charge disabled, decreased screen brightness & resolution, shut down background processes, did malware and virus scans, factory reset, etc. No change.
I do have many apps installed on my phone and I have moved as many as possible to the 64Gb micro sd. No difference. Looking for suggestions. Is this a defective phone? Should I be looking at a replacement? My Note 4, Note II, and Thunderbolt all had much better battery performance.
Your help is appreciated.

I can get like 10-11 hours, did you check "Battery" section to see what is draining her ?

Well I can get even 12h of sot so I don't know how can you get such low battery life. Also, if it heated up to 100° Celsius the battery is not healthy anymore,you should change it

There is absolutely no way that U can get 12 hours of SOT on official rom and with average usage. Don't confuse the OP.
About the problem,
Did U try factory resetting the phone? That should be the first thing to do when the battery is draining abnormally. Also. send us pics of battery usage.

Sorry for the late reply. Apparently I turned my notifications off.
Yes, I have done a factory reset twice in the past few months. I think I'm going to backup in the next week or so and do another one and this time try installing only a minimal set of apps for a few weeks and see how it goes.
Here is a screenshot of my current battery usage. I charged the phone twice today. It's actually doing ok at the moment, usually android system uses the most juice.
Also a shot of the current temps.
Thank you all again!

Screen on time

It's amazing how much we actually use our phones in a given day, especially when we watch "videos"! Rate this thread to express how many hours of screen-on time you can get on the Samsung Galaxy M51 before depleting the battery.
Then, drop a comment if you have anything to add!

Getting 17hrs of screen on time minimum on full charge for youtube 3hrs , clash of clans 2hrs and 45-50 mins of calls per day....last 3 days with my usage
Plus Whatsapp of 1 hrs approx per day

gandeepan said:
Getting 17hrs of screen on time minimum on full charge for youtube 3hrs , clash of clans 2hrs and 45-50 mins of calls per day....last 3 days with my usage
Plus Whatsapp of 1 hrs approx per day
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SS or it didn't happen

I've had this phone 2 days and so far I've had 6 hours 31 minutes of screen time and I have 58 percent battery left. This is mostly YouTube, Web browsing, an hour of downloading apps from play store and a bit of emulation (ppsspp) am extremely impressed with the battery life on this phone.

Battery lasts more than 2 days at Medium Power Saving mode with moderate apps usage(no gaming but with youtube, magic fluid live wallpaper, whatsapp, browsing) and SOT approx 13+ hours in these two days. At the end of second day battery remains at 30-35%.

Has anybody here compared to the Moto G8 Power? Is the battery life even better?

GoogleoverK said:
Has anybody here compared to the Moto G8 Power? Is the battery life even better?
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Exactly how do you think a cheap SD 665 11nm chip with a 5,000mAh battery will do against a higher tier SD 730g 8nm chip with a 7,000mAh battery?
Hmmmmm ?

Devilmonkey27 said:
Exactly how do you think a cheap SD 665 11nm chip with a 5,000mAh battery will do against a higher tier SD 730g 8nm chip with a 7,000mAh battery?
Hmmmmm ?
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Could have answered like a normal person.

GoogleoverK said:
Could have answered like a normal person.
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I did... Exactly how do you think they will compare?

@Devilmonkey27 No need for snark...
It was a genuine question, try to provide a genuine answer. Please reply properly or don't reply at all.

Didgeridoohan said:
@Devilmonkey27 No need for snark...
It was a genuine question, try to provide a genuine answer. Please reply properly or don't reply at all.
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So exactly how do you think a phone with half the specs will do?

Devilmonkey27 said:
So exactly how do you think a phone with half the specs will do?
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You're missing the point. My post has nothing to do with that...
I'm simply asking, that if you have anything to add to a thread, please do so in a constructive manner without snark or attitude. It would have been very easy for you to convey your message without being rude or condescending.
If you've got more to discuss on this particular matter, please contact me through a private message (to keep the thread on topic).

Devilmonkey27 said:
Exactly how do you think a cheap SD 665 11nm chip with a 5,000mAh battery will do against a higher tier SD 730g 8nm chip with a 7,000mAh battery?
Hmmmmm ?
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To come back on it, I have it since today and so far it's looking like the G8 Power has better or equal batterylife, standby drain is somehow bad on the M51, I checked all apps. Still I'll let the software settle and get through more cycles and check Gsam Battery Monitor in a couple of days again.
I honestly blame Samsung's other apps that aren't used and aren't able to be disabled or uninstalled.

Hi guys. I wanted to let you know my findings and provide some test results of galaxy m51 battery life. Firstly, I will outline what was my priority for that test. I wanted to check how long the phone can last mainly on google maps navigation with additional apps in the background. Also this test is a bit static so to speak but had no chance travelling for so many hours. That said I believe SOT was tested correctly for my planned usage. I guess in a real case scenario, I would need to do some more browsing and perhaps occasional screen switch offs during a break like filling up the fuel or stop to rest on a bicycle.
How I performed my test.
1. I did some initial installations, downloaded my apps and logged in to social apps such as FB, Spotify so they can work in the background, send notifications etc.
2. Once I completed the setup, I charged the very new phone to 100%. AccuBatter reported capacity was 6800mAh designed capacity not 7000mAh and estimated capacity 6700mAh.
3. CPU-Z reported Snapdragon 730 so I regret it is not 730G and honestly I do not know how to check with online stores as the packaging does not help with this. Also, I plan to test POCO F2 PRO 8gb ram/256gb version the same way and see how it goes since I get better hardware, but I like SD card slot on galaxy m51. Very useful when resetting the phone.
4. Set google maps navigation, lunched another app which uses GPS and LTE for maps showing speed cameras, road works or dangers which I use alongside with google maps. I also start shuffle play on Spotify to imitate streaming the music in my car or on the bike.
5. WiFi, LTE, GPS, Bluetooth, sync was enabled, blue light filter enabled.
6. Between 15-20 apps were in the background.
7. I unplugged the device from the mains.
8. Initial 15% discharge was with a WiFi connection with my router. Then switched of my router for overnight, left wifi enabled on Samsung but it had to continue downloading data over LTE such as Spotify music streaming. I also changed google map setting to day light only to avoid night backlight.
9. I went to bed? and in the morning there was still a lot of juice.
10. Around 20% discharge I took about 100 pictures most of them in burst mode to simulate a trip where you simply stop and take some snaps.
11. I stopped the test at 1% discharge and noticed no heating problem. The phone was cool during the test.
The overall SOT measured until 1% discharge was a staggering 17h 50m? Below you will find AccuBattery screenshots. At remaining 15% I had still over 2 h 42 m of use left.
This phone reminded me of good, old days of my Samsung galaxy s3 with a Zerolemon 7000mAh?
Now with my galaxy s7 deteriorating battery (current capacity just over 2300mAh) this is a great thing. For Galaxy s7 I also own a KiwiBird powerbank case of 5400mAh right from the beginning wich did its job when away from the mains, travelling etc.
I guess for a more accurate SOT, I would need to add some phone calls and browsing but even with I deduct 2h, it is still nearly 16 h of use. Like for me excellent. I also do not plan gaming.
On the downside of this phone it seems like my galaxy s7 takes a bit better picture, but it just might be my perception of selfies taken. Back camera is also just ok on a cloudy day. Ok but that is an offtopic.

I got my M51 yesterday and I am not fully sure yet about battery lifetime. I have charged it to 100% and about 8 hours and 2.5 hours secreen time later I am at about 90%.
Coming from my Moto Z Play I am not sure yet if I stay with the galaxy. The Mot Z Play with Incipio OffGrid Wireless Power Pack mod is about the same size and weight. Though provides less capacity (3300mAh phone + 2200mAh power mod) but battery lifetime still was bout 3-4 days usually.
The M51 is also getting considerably warmer during use.
I noticed also the Samsung battery saver with medium settings can reduce the CPU clock to max out at 70% which is handy. Not sure if there is any undervolting, underclocking tools as I think I would be perfectly fine with less performance - actually I was able to reach insane battery life on my old Galaxy P1000 with TricksterMod and custom undervolting back in the days.
I still believe better lifetime with the M51 would be possible bz reducing CPU clock and also with better screen brightness control. I noticed many times already that the M51 screen was too bright for me and having to reduce the slider to "minimum" position or very close to it. Also I noticed that the screen brightness slider is not linear at all. So on the last notch on the left side the screen really starts to dim properly while to the right there isn't much change. Also I like still to use automatic screen brightness adjustments but found the automatic adjustment often moves the brightness too high.
Also a possibility to limit the used screen area (e.g. display black bar on bottom/top) would save energy on the AMOLED screen while still providing more than enough screen space.
EDIT: One-Handed mode sort of provides this feature, but not exactly what I was looking for (like cinema-bars on top and bottom and no prominent "one-handed-mode" title.
I will continue to use the M51 for a couple of charges and decide if I am going to trade it again. The phone itself is performing well, supporting VoLTE WiFi calling but seems to lack carrier aggregation for no apparent reason. I strongly dislike the slippery, fingerprint-attracting, cheap-looking plastic backside of it.
I also hate that everywhere you tap it tries to sign up to a Samsung account. Also replaced the launcher with Nova launcher.

Below is the answer to almost all above useless posts
Battery life tests - GSMArena.com
Why I say useless ?
Simply. SOT will be completely different when you read ebooks compared when you watch movies or browse Internet.
Gsmarena does standarised comparison
I am fan of long life battery phones. I used "king" Lenovo P2 for over 2 years. M51 is better.

I'm at the fourth cycle of charge.. and got 15 hrs so far.. have done a heavy idb debloating
maby it will increase over more charging cycles?

i m getting about 20h sot normal usage
facebook lite, browser , youtube , aliexpress and playing alphalt extreme 30 min
wifi and dark mode on
brightness between 10-40 %
data off
location off
this phone have a very good battery