[UPDATED] 2021: No more lags, freezes, battery drain, heating...

  1. TheMystic
    Lollipop Apr 7, 2021

    TheMystic , Apr 7, 2021 :
    In this thread, I will give you simple tips to have the best smartphone experience that is free of lags, battery drain, heating and other common complaints. You really don't have to do anything beyond this as most other 'solutions', 'suggestions' that you find elsewhere simply won't work for reasons quoted below. At best, you will have Placebo Effect that is completely misleading.

    But before going into this, I want you to understand a few important things.

    Complaints about battery drain, heating, lags, etc. are never-ending. You know why? Because much of the 'solutions' you see on the internet and online forums are either outdated, incomplete or just don't work. You will find some poster going technical with their solutions to impress upon people, and it tends to draw attention because it gives the impression that the person knows the stuff. The fact, however, is such explanations, theories and suggestions are highly limited in their scope and completely based on certain assumptions, which almost always turn out to be untrue. Result? Everything you try either doesn't work, or works just initially or temporarily before everything goes back to square one.

    Understand this:

    Every hardware has technological limitations and come with a certain number of hours/ cycles of useful life. This includes the battery, CPU, GPU, and every single piece of hardware on the device. This is universally true, even if I stick with smartphones for our discussion since this is a forum primarily for smartphones.

    You MUST setup and use your phone in a way that consumes least CPU cycles, least impact on RAM, battery, network radios, etc. to prolong the lives of the hardware and to maximize their efficiency to give you best user experience.

    An easy way to explain this is Cache! Probably the most misunderstood feature. Cache is there to speed up your device. Do you know how you get speed? When you don't have to redo (or rebuild) something! Everytime you delete cache, your phone (via the OS and apps) has to recreate them to provide the experience it is designed for. And everytime Cache is rebuilt, it consumes CPU cycles, drains battery, uses RAM, uses network (if it has to re-download stuff), etc. All these also generate heat, which is the biggest hardware killer. Now you have spent a lot of resources and taken away the useful life of your hardware just for RE-DOING something that was completely AVOIDABLE!

    The most important factor, which is in your hands, that affect your smartphone experience is your choice of apps. Only a few apps are excellent and you have to find them (via trial and error or by seeking help) for the problem you are trying to solve. A vast majority of apps are badly coded, run background services, display ads, keep polling the system for events, or pure evil. Your smartphone experience is directly proportional to the quality and number of apps you have installed, quality being more important.

    While the Operating System (OS) is identical, your device isn't! There are a range of factors that affect hardware and no two piece of hardware are identical. Thats why people using the same software don't have identical experience since their hardware is not identical. But they eventually end up blaming the software because often problems crop up after an update, and they forget the fact that it is the hardware that is different and responding differently to the update. In addition to the hardware, external factors like location, network connection, mobile signal strength, etc. too play a major role on your overall experience with the device.

    I have explained the common factors that affect battery life here:

    Battery Facts... - OnePlus Community

    The software as such plays a much smaller role compared to the hardware and external factors.

    I will tell you how I set up my device. Hope this will help you too.

    1. For most apps, I use the PRO version, wherever available. Buying the PRO version or making in-app purchase supports development and is an appreciation for the developer for his/ her efforts and good work done.

    2. I use ad-blocker, so have no idea about ads on free versions. This is not to block revenue to developers, but only to safeguard my own privacy and security online.


    3. I disable internet access to all apps that should not require it for core functionality. For apps that should work offline, go to Settings/ Apps & Notifications/ All Apps and for each app, disable both WiFi and Mobile Data. You can also access this under Settings/ Apps and Notifications/ Data Usage Control: For each app, change it to 'Forbidden'.

    Do remember, that this will block ads too which is a bad thing as the developer depends on ad revenue. It would be nice if you could buy the ad-free version (either a separate app or in-app purchase) to support development. DON'T BE CHEAP!

    4. I DENY all unnecessary permissions to apps. Go to Settings/ Apps & Notifications/ Special App Access: Deny all unnecessary permissions. Some apps in this section are automatically granted some permissions like 'Modify System Settings', 'WiFi Control', etc. Deny these permissions.

    5. Go to Settings/ Privacy/ Permissions Manager: Deny all unnecessary permissions. You will also find this under Settings/ Apps and Notifications/ App Permissions.

    5. If side-loading an app from outside Google Play Store, always upload the apk to VirusTotal and ensure no engine flags it. Install the apk only if it comes out completely clean.

    6. For apps that you rarely use, best is to uninstall it after saving the apk. But if for some reason you would like to keep it installed, go to Settings/ Apps & Notifications/ All Apps and for each of those apps, go to Advanced/ Battery and choose 'Optimize'.

    7. For apps that you frequently use, best is to go to Settings/ Apps & Notifications/ All Apps and for each of those apps, go to Advanced/ Battery and choose 'Do NOT Optimize'. This is best for apps that have a persistent notification, email, chat, sms, phone, Google Photos (or any app that backups up your stuff real-time), etc.

    8. If the OS has a Autostart feature (not available in OOS), make use of it. Disable Autostart functionality for apps you don't want to start on its own.

    I look forward to the following features:

    1. Cross platform support - This helps me stay away from platform dependency (iOS/ Android). I can easily switch platforms because the app would be available.

    2. Sync support - I prefer signing in with an account so the information can sync across devices, across platforms.

    3. The app is under active development.

    4. Simple and minimalistic, but fully functional.

    5. Small size (compared to similar apps) - small app size indicates efficient coding and less possibility of unwanted bundling inside the app.

    6. Least amount of ads/ trackers. You can check them here:


    Simply copy the Google Play Store link into the box on that site to see how many trackers are built into the app.

    7. If an app is excellent, I try to see what other apps are available from the same developer.

    8. Any app I download from outside Google Play Store, I always upload them to VirusTotal to scan for malware. I usually download apps only from the following sites:

    1. Apkmirror https://www.apkmirror.com/
    2. F-Droid https://www.f-droid.org/
    3. XDA
    4. GitHub

    I will usually not sideload an app even if one antivirus engine on VirusTotal flags it as malware, with very very rare exceptions. It is a strict NO if multiple antivirus engines flag them.

    Apps that must run in the background to improve your experience are the first ones you should stay away from. Examples of such apps would be those that have the following terms in their names or app descriptions:

    1. Antivirus
    2. CPU Cooler
    3. Memory/ RAM booster
    4. Battery Saver
    5. Cache Cleaner
    6. Memory/ RAM cleaner
    7. Battery Recalibration
    8. Others, you got the idea.

    Far from doing what they 'claim' to do, they ALL are pure evil and completely counter-productive. Unless you are a researcher doing a specific research or analysing battery behaviour or something like that, STAY AWAY from GSAM, BetterBatteryStats, AccuBattery, and other similar apps.

    There is absolutely no point in installing these as they run a background service, constantly polling system events (and therefore consuming CPU and other resources), constantly analysing other apps behaviour, etc and ultimately draining battery (which they are supposed to help conserve) and wasting precious CPU cycles, eventually reducing the life of hardware.

    Stay away from apps that run background service and constantly keep polling for different types of events. These are the apps that cause lags, drain battery and contribute to poor experience on the device.

    If possible, stay away from Facebook/ Instagram too. Use a mobile browser to access your accounts or use their Lite versions if possible. OOS has the significant advantage of being one of the very few (or probably the only one from an OEM) OS that doesn't bundle evil Facebook Services (different from Facebook app).

    Same holds true for other social media apps that apy on you.

    You really don't have to tinker with any of the system functions. The OS knows its job the best and can handle its requirements perfectly. Android has evolved significantly over the years. Suggestions like keeping the phone on charge overnight after an update, passing unnecessary commands (like forced optimization and others) over ADB, etc. are just myths. At best, their proclaimed benefits are miniscule and so insignificant, that you are better off not bothering about it. In some very limited cases, battery drain may be slightly higher after an update for a couple of charging cycles, but that is all there is to it. It doesn't require any user intervention. Just let the OS handle itself.

    Hope this helps.
    Last edited: Apr 8, 2021

  2. TheMystic
    Lollipop Apr 7, 2021

  3. Mr. BG
    Welcoming Expert, Community Hero 2020 Community Expert Apr 7, 2021

    Mr. BG , Apr 7, 2021 :
    Cheers bud, nice one :)

    I once made a thread like this, but it's rather outdated after so many years.

    Also, please consider adding the apps that act like Spy/malware, Facebook and Instagram for example.

  4. TheMystic
    Lollipop Apr 7, 2021

    TheMystic , Apr 7, 2021 :
    Done. Thanks.

    Caoimhín and Mr. BG like this.
  5. malidan
    Nougat Apr 11, 2021

    malidan , Apr 11, 2021 :
    I've only ever had a battery drain issues on Oneplus and Pixels devices and my solution was to sell them and invest in better optimised software and Hardware.

    The Pixel has too many hidden processes and from what I can see false battery usage reporting.
    OP software is just buggy and too has hidden stuff happening in the background, I can remember spending the hours messing about with wakelock blockers Greenify, custom kernels and all that crap, then I found a better way Hauwei and Samsung. Their optimisations are unreal upto 10+hrs of SOT with hrs of PubG and Xiaomi then joined the party with the battery life on the Poco F2 Pro being epic, midranged battery endurance with top tier performance.

    Z1619790887180 likes this.
  6. TheMystic
    Lollipop Apr 12, 2021

    TheMystic , Apr 12, 2021 :
    You keep talking of bugs in OOS as if they are not present in devices from other brands. Bugs are present in all brands, and OOS is no different.

    Talking of basics like heating, battery drain, lags, etc. I have repeatedly told you I have never experienced such problems. This is my second OnePlus device. But you keep ignoring it and focus only on those threads posted in the community that are complaining about a problem. Go to forums of other brands like Samsung, Xiaomi and others and you will see even more complaints there. But you want to ignore it because it suits you.

    Talking of wakelock blocking, custom kernels, etc. All those are total crap and achieve zero benefits. They may have some Placebo effect, and that is all there is to it. The only benefit I found of installing a custom kernel is the ability to tweak display colours and temperature, which was not possible with stock kernel. This is a real benefit. Rest everything is pure placebo.

    Xiaomi, Poco, Huawei, etc. are notoriously aggressive in killing apps which is extremely annoying. Even apps that the user wants and configures to keep running in the background are killed, and the purpose is defeated. I would rather sacrifice a couple of hours of battery to have the phone work the way I want, than let the OS ignore my requirements.

  7. malidan
    Nougat Apr 12, 2021

    malidan , Apr 12, 2021 :
    Isn't it amazing how anything I say you seem to change it.
    This is what I said
    What disease do you suffer from?

    Googles battery life woes are well documented over the years and OP record with heat, battery drain etc is the stuff of legends. If you go to the support section for every single device back to the OPO it will read the same, the sheer volume of comment on the subject is undeniable.

    I have to say some of your comments are laughable.

    1. Custom kernel if you know HOW to use a custom kernel you can extend your battery life considerably, the easiest and most simple way to get an immediate effect is to lower the clock speeds of the SOC. There are many other things you can tweak dependent on the tool you have, there are also many members on this forum that will tell you your placebo statement comes from a man with limited experience.

    2. Wakelocks too have been an issue that stops devices from enter a deep sleep and therefore draining the battery considerably faster. OP device's suffered with this due to the lack of robustness of earlier OS's. Reading through some of the threads not a whole lot has changed.

    I dunno what Huawei, Xiaomi or Poco have to do with what I said but the killing of apps is to save on power and if you needed to hold something in memory the ability to lock the item in memory is there. Didn't you know that? So why would you need to sacrifice anything?



    Comical thread full of opinions and not facts.
    Here have a butchers XDA

    You are not as Mystic as your name might suggests. :rolleyes:
    Last edited: Aug 22, 2021

    G1628048537463 likes this.
  8. Mr. BG
    Welcoming Expert, Community Hero 2020 Community Expert Apr 12, 2021

    Mr. BG , Apr 12, 2021 :
    Please play ball, not the ankles o_O

    G1628048537463, Caomhin and McJader like this.
  9. TheMystic
    Lollipop Apr 12, 2021

    TheMystic , Apr 12, 2021 :
    You can keep laughing because it is good for your health. But that won't make facts opinions. Just because you don't understand something doesn't mean it is untrue. It just means you are limited by your ignorance.

    Why buy a phone with a fast processor if you are going to underclock it? Doesn't that show you how an unoptimized brain works? You concern yourself with tweaking possibilities, and I am concerned only with the end result. You are too attracted and obsessed with gimmicks and capabilities, than results and end use.

    Talking of Xiaomi and other brands, as always you jumped into responding without reading the comment properly. Disabling battery optimization doesn't work is what I said. Same holds true about locking the app in memory. The OS simply ignores the setting and does its thing in killing apps.

    W1612285584494, only1adhd and Caomhin like this.
  10. malidan
    Nougat Apr 12, 2021

    malidan , Apr 12, 2021 :
    I don't play with balls, I leave that to you boys

    G1628048537463 likes this.
  11. malidan
    Nougat Apr 12, 2021

    malidan , Apr 12, 2021 :
    You actually said:

    Too many lies.

    Nothing you said was a fact, I posted this

    And you have the nerve to comeback with the word ignorance and the sentence You are too attracted and obsessed with gimmicks and capabilities, than results and end use.

    So now you believe you know better than XDA Developers. 🤭🤭🤭

    Custom kernels gimmicks

    See you out there. 🤫
    Last edited: Apr 12, 2021

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  12. Mr. BG
    Welcoming Expert, Community Hero 2020 Community Expert Apr 12, 2021

    Mr. BG , Apr 12, 2021 :
    Calm down, you're being an a$$..

    G1628048537463 and Caomhin like this.
  13. malidan
    Nougat Apr 12, 2021

    G1628048537463 likes this.
  14. SachinTS
    Honeycomb May 20, 2021

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  15. #15
    G1628048537463 likes this.
  16. TheMystic
    Lollipop May 30, 2021

    TheMystic , May 30, 2021 :
    Cache can be safely cleared for apps that is unlikely to use old information. This includes most apps actually. Apps whose cache is not advisable to clear are gallery apps, file manager apps, streaming apps, etc. which tend to reuse the same information repeatedly. For such apps, clearing apps would mean re-creating thumbnails and other info for the same files, which leads to unnecessary use of hardware resources for no benefits in return.

    For apps like YouTube, Instagram, etc. it is fine to delete their cache because you are unlikely to view the same video/ story again.

    G1628048537463 and SachinTS like this.
  17. L1611358678510
    Cupcake Jul 27, 2021

    L1611358678510 , Jul 27, 2021 :
    Hi. I ahve awfull battery drain. I have oneplus8 pro and i cand get even 5 hours of screen on time i usualy get about 4 and a half hours. I honestly cand undestand why. I use only 4g 120hz on fhd+ almost never have location on. This is the first device a hadd in my life that doesnt get me through the day. And the cherry on top is that this is my second oneplus 8 pro and they both have the same battery life, so im astonished of people getting 7-8 hours of screen on time

    G1628048537463 and horayiso like this.
  18. hsklak
    Cupcake Aug 11, 2021

    hsklak , via OnePlus 8T , Aug 11, 2021 :
    So, after reading all of this, why doesn't One Plus just admit that the One Plus 9 Pro does not work 100% percent as designed, unless of course, all these issues, were known, and just deemed acceptable.

  19. horayiso
    Eclair Aug 25, 2021

    horayiso , via OnePlus 9 , Aug 25, 2021 :
    I can't believe I spend 900 dollars and have to read a thread like this for a proper experience. Next time I'm just gonna straight up buy an iPhone 💀

  20. only1adhd
    Cupcake Sep 8, 2021

    only1adhd , Sep 8, 2021 :