Many of the Samsung Galaxy S7 Edge (#GalaxyS7Edge, #S7Edge) owners have been complaining about reduced battery life in their new #smartphone and we sure understand why. It packs are huge battery as well as new technologies that are more efficient as far as power consumption is concerned. That's why anyone can easily get disappointed if the battery life doesn't meet their expectations.
In this post, I will guide you on how to properly troubleshoot your Galaxy S7 Edge that discharges its battery very quickly. We don't guarantee that we can fix this kind of problem, however, we will help you discover the cause so that we can determine if you need a technician to take a look at your device or if it can be fixed without any help.
Before we go any further, if you have other concerns, visit our troubleshooting page and find issues that are similar to yours and then use the solutions we provided. If they don't work for you and if you need further assistance, then contact us by completing our Android issues questionnaire.
There are several factors to consider when troubleshooting quick battery draining issues and for some, it might be very tiring. So, I suggest that if your phone is new and is under the replacement period and you're experiencing this issue, do not troubleshoot. Instead, have it replaced immediately just to make sure you got yourself a device that doesn't have issues out of the box.
For those whose devices started to manifest reduced battery life after a few months of use, then read on to see if you can fix it on your own.
Step 1: Verify if the phone discharges its battery quickly if only pre-installed apps are running
The procedure below will immediately isolate the problem for you. As you know, apps eat up battery quickly if there are a bunch of them running in the background especially heavy game apps. You need to rule out this possibility first and there's no better way to do it than booting your phone in safe mode:
In this state, all third-party apps are temporarily disabled. So, if some of them were actually sucking up the juice really fast, then there must be a noticeable difference when only pre-installed apps are running. It means that you'll have to use and continue observing your phone while in safe mode.
A Samsung Galaxy S7 Edge that's suffering from quick battery drain may not also fast charge and booting it in safe mode will not only give you an insight if the problem is caused by third-party apps or not but it also verifies if your phone is capable of fast charging–assuming you're using the original charger or a power adapter that's capable of adaptive fast charging.
If the phone fast charges and drains its battery normally in safe mode, you should proceed your troubleshooting by discovering the apps that cause the problem. You must begin with CPU intensive ones like game apps. You may disable or uninstall them.
However, if the phone still discharges very quickly even in safe mode, then you should do the next step to probe further.
Step 2: Verify if your phone charges normally when it's turned off
You already tried using your phone with only pre-installed apps running but it was still discharges its battery very quickly. This time, try to power down your device, plug it in and observe closely if it charges normally or if the fast charging feature comes into play because if so, then the problem is with the firmware.
Assuming your phone is charging normally in safe mode, then you must proceed by troubleshooting the firmware because it's very much possible that it's suffering from a serious performance issue that affects it's capability to charge properly.
The next step will tell you what to do. However, if the phone doesn't charge even if it's off, then skip steps 3 and 4 and proceed to step 5.
Step 3: Begin your firmware troubleshooting by deleting the system cache
If you think corrupt system cache won't affect the charging process, you're wrong. If there's some kind of conflicts in the system, it's probably that it's performance be affected as well as other process.
For some, the problem maybe characterized by failed boot ups, others may experience random reboots and shutdowns, many might encounter freezes and lags, and some may have this kind of problem–slow charging and/or quick battery drain.
So, the next thing you should do is wipe the cache partition and see if that makes a difference:
Don't worry, deleted system cache will be replaced when the phone boots up for the first time since the wiping of the cache partition and your files and data remain.
Step 4: If the problem remained after deleting system cache, it's time you did the master reset
This is the next procedure you must do if the wiping of the cache partition hasn't fixed the problem. The master reset will delete and reformat the cache and data partitions, which also means you will lose all your data, settings, files, music, videos, etc. so make sure you back them up before doing the procedure below.
NOTE: It doesn't matter how long you press and hold the Home and Volume Up keys, it won't affect the phone but by the time you press and hold the Power key, that's when the phone starts to respond.
NOTE: The "Installing system update" message may show on the screen for several seconds before displaying the Android system recovery menu. This is just the first phase of the entire process.
Step 5: Check if your phone suffered liquid or physical damage
If water found it's way into your phone and it started acting weird, then something must have been messed up. For those who were told that the Samsung Galaxy S7 Edge is waterproof, well, it's not true; it's just water-resistant. Meaning liquid can still get into your device at any given circumstances.
To check if your phone suffered from liquid damage, remove the SIM card tray and then look into the slot and check if the small white sticker turned pink, red or purple. If so, then the cause of quick battery drain and slow or no charging is water damage. There's nothing else you can do about it except bring your phone to a shop and have cleaned up or repaired.
As to physical damage, well, it's pretty easy and visible if the phone indeed suffered from it as you can tell immediately by just looking at the outside cover. The components inside are well secured and even glued that a fall from waist high won't probably damage them. However, if there are cracks outside and the phone started to act crazy, then you also have to send your phone in for checkup and/or repair.
I hope that this troubleshooting guide can help you determine why you phone discharges its battery very quickly and why it's not charging the way it should.
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Source: Troubleshoot Samsung Galaxy S7 Edge that discharges its battery very quickly, slow charging
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