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8 Tips to Deep-Clean Your Android Phone

by on March 07, 2018
in Phones and Mobile, Mobile Apps, Android Apps, Tips & How-Tos :: 27 comments

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Does your Android phone feel sluggish? Is the camera refusing to take pictures because there’s no more space to save them? Or maybe you’ve had to resort to a one-in-one-out policy when it comes to downloading new apps.

A deep-clean could be the solution. Whether your phone sports 16GB, 64GB or 128GB of storage, it can be all too easy to fill it up, especially if you’ve migrated app data and settings from an older phone. Restoring a full backup of your device (to see if you’re backing up, check Settings > Backup & reset > Back up my data) minimizes the setup required when upgrading to a shiny new phone — but it can mean that you end up dragging along apps and data you no longer need.

Even if you’ve started afresh, photos can be another common storage hog. Not only are smartphones the de facto recorder of life’s moments, they also collect all the images and videos you receive from Facebook Messenger and WhatsApp and image files created in scanner apps, for example. All these images are saved to your device — but with Google’s generous photo upload policy (unlimited lower-resolution uploads for all Google users; unlimited full-res uploads for Pixel and Nexus users), it’s hardly necessary. Anytime you have an internet connection, you can view every photo you’ve ever uploaded via the Google Photos app.

Downloaded files from emails and web browsing can make sneaky demands on those GBs too, and if you’ve been using your phone for a while, it may be overstuffed with fragments of app data — cached files that apps create while they run to help keep operation smooth and slick.

Expunging unneeded apps, photos and other files from your phone is a must when you’re running low on storage, and can even provide a sizeable boost in performance. Here’s how to get started with your Android deep-clean:

The basics

1. Identify the biggest storage-hungry culprits.

Like laptops, smartphones use a solid-state drive for storage, and maxing out this drive can slow down performance (here’s a technical explanation of why). Tests have suggested that using no more than 75% of total storage of computer solid-state drives helps with performance. If sluggishness has been an issue, aim to delete enough files so you’re under that benchmark.

Head into Settings > Storage where you can see what percentage of your total storage you’ve used, and what types of apps are eating it up.

Photos often take up the most space, so if you haven’t already, here you can enable Smart Storage, which backs up photos and videos that are over 30, 60 or 90 days old to the Google Photos cloud service. This option means you can delete photos from your device, but still view them via the Google Photos app, whenever you have an internet connection. For Pixel and Nexus phones, doing this is a particular no-brainer as you get unlimited full-resolution photo uploads in Google Drive; for users of other Android phones who have enabled unlimited lower-resolution backups, it’s worth noting that this option will delete your full-resolution originals (from your device) unless you back them up somewhere else first (like an external hard drive or a photo sharing service such as Flickr, which offers 1TB of free storage).

Note: Deleting photos directly from the Photos app removes them from everywhere even if you’ve selected auto-backup — see below for how to delete backed up images and videos from your device only.

2. Free up space (easily).

An easy place to start is by deleting downloads, infrequently used apps and backed up photos and videos. For those running Android 8.0 Oreo, it’s as easy as going to Settings > Storage and tapping on “Free up space.” If your phone is running Android 7.0 Nougat (or earlier — which you shouldn’t be, because you should always install software updates) you’ll need to address each separately.

Since your photos and videos are backed up to Google Drive, deleting them doesn’t affect your ability to view them on your phone, as long as you have an internet connection. Go ahead and check these for deletion — I last reclaimed a pretty hefty 5GB of space. For Android 7, open the Photos app (not the Samsung Gallery if you have a Samsung phone) select Menu > Free up space.

Downloaded files can accumulate through email attachments or PDFs you open while web browsing. Here you can view a list of downloads in order of size, then delete what you don’t need. You may not claw back more than a hundred MB from download files, but go ahead and delete them anyway — every byte counts. For Android 7, go to the Downloads app, sort the files by size and then touch and hold to bring up the option to delete the file.

Infrequently used apps can easily build up on your Android phone too — whether you’ve migrated some outdated apps from a previous phone or you download apps on a tablet or web browser that remotely turn up on your phone too. Happily, here in “Free up space,” you’ll be shown which apps haven’t been used in at least 90 days — which may not mean you don’t want them, so run through the list before hitting delete. For Android 7, go to Settings > Applications > Application Manager and you’ll see a list of apps. If any don’t look familiar, tap and then select “Uninstall.”

Note: You can check “Free up space” regularly to see if there are photos or downloads you can quickly and easily delete with little impact. 

3. Check to see what other types of apps and files are taking up a lot of space.

The storage manager also shows how much space various categories of apps take up compared with others. Do you have a ton of games, music apps or movie/TV apps? If so, tap on the category and run your eye down the list. Are many apps performing similar functions? If so, you could delete some of them. If you know which apps you want to delete, head into Settings > Apps and notifications > Show all apps for Android 8 (or Settings > Applications > Application Manager for Android 7), then tap the apps in question and hit uninstall.

If you need a little more inspiration for deletion, you can see which apps are getting the least playtime — and are therefore the ripest candidates for deletion — by heading to Play Store > top-left menu > My apps & games. Sort by “Alphabetical” in the top-right to filter by “Last used,” and head to the bottom of the list to check for underused apps, especially if they eat up more MBs than their neighbors. To delete an app, tap to open, then hit uninstall.

4. Manage music and podcasts.

If you use Google’s Play Music app for streaming music and podcasts, you may have inadvertently selected to download purchased or uploaded music to your device, or allowed the app to automatically download the three most recent episodes of subscribed podcasts.

That might mean you have a ton of media on your device that doesn’t really need to be there — after all, if you’re in a Wi-Fi or 4G zone you’ll have access to the tunes. Or, you may have doubles of particular songs if they appear in various collections. (Of course, if you’re embarking on a 12-hour plane journey, go ahead and keep these on your device.)

You can see how much storage space music and podcasts are taking up in Play Music > Settings > Downloading > Manage downloads, where you’ll also see how this compares to the storage usage of other apps. To clear out these downloads, tap on Music Library > Songs and manually delete song by song (or podcast episode).

To prevent future auto-downloads, in the Play Music app, head to Settings > Downloading and disable the setting.


You’ll most likely still have various bits of digital flotsam that have escaped the wide net cast above — this next stage is about streamlining the files that are saved to storage.

5. Sort out your photos.

In Photos, hit the top left menu and select “Device Folders,” where you’ll see categories such as Screenshots, WhatsApp images, videos and gifs, Instagram pictures and other image files created in your various apps. You can delete folders here — for example, you probably don’t need to save all your WhatsApp gifs or items scanned on Office Lens — by tapping on the folder, then the top-right menu (or selecting All in Android 7 and tapping the trash icon). Here you can also turn off syncing to Google Photos; though they won’t count against your storage if they are less than 20MP image (which they should be), for the sake of a tidy cloud folder, screenshots probably don’t need to be backed up, for example. A cloud with a line through it indicates a folder is not being synced (and therefore if you delete it here, it’s gone forever). So make sure you sync your photos and videos before you purge them off of your phone.

6. Delete old offline maps.

Google Maps’ offline feature can be a godsend for navigating abroad without incurring roaming charges. However, those saved maps of Paris or Casablanca could be contributing to your phone’s dwindling storage. Open Google Maps and tap the top-left menu button to view — and delete — offline maps of places you’re no longer in.

7. Empty app cache or app data.

In the course of operation, apps create cache files — bits of data created as you use an app in order to make the app run faster. Depending on how much you use an app, cached files can build up to quite a size — but, thankfully, they can safely be deleted.             

Head to Settings > Storage > Other apps to see a list of your downloaded apps (excluding music, games, and movie/TV apps) sorted by the amount of storage they take up. Click on the ones using the most storage to see how much of that is taken up by cached files. You can then click on “Clear cache,” which can help with storage issues as well as improve sluggish performance — for example, my Instagram cache took up nearly 1.4GB while the app itself took up under 100MB. If you’re using Android 7, you can clear all app cache data at once in Settings > Storage > Cached data.

If the phone is having performance issues — or if an app is glitching — you might even hit “Clear Data” on especially bloated apps, which essentially resets the app as if you had just downloaded it. You would then need to sign in again and any saved progress in the app (such as with a game) might be lost unless the app is saving data to the cloud (such as with Instagram — you could clear app data in Instagram without losing photos).

The nuclear option

The ultimate deep-clean, of course, cleans all of it out: your photos, apps, data and settings.

8. Do a factory reset.

With so many apps, including the photos and contacts book, capable of syncing to the cloud, this isn’t as explosive a nuclear option as it might be in a computer deep-clean — and it can be the best way to clear the junk from your Android trunk in one fell swoop, while potentially bringing your phone back to its early-days speed.

Resetting your phone means you can then cherry-pick the apps you want to reinstall. Check in Settings > System > Backup > App data that you’ve enabled Automatic restore so that when reinstalling these apps, their data and settings are preserved. (Alternately, you might disable this setting if some apps were glitching — a fresh install might sort out in-app performance issues.)  

Finally, head to Settings > System > Reset options > Factory reset — and enjoy your spiffy like-new phone.

[Image credit: phone settings concept via BigStockPhoto]

Discussion loading

Deep Clean Android misses the most important point!

From Charles Barbarow on March 12, 2018 :: 2:01 pm

Nice article but as far as I am concerned misses the most important issue and that is all the garbage apps the manufacturer shoves down our throat and you cannot get rid of them…I just upgraded my phone to gain more storage space for apps I need & want for my business and the new phone has a ton of preloaded apps that I will never use !!!! and you cannot delete them either based on my research earlier this morning….
The big companies are just controlling every aspect of our privacy rights and there should be some MAJOR CLASS ACTION LAW SUITS STARTED TO GET OUR RIGHTS TO PRIVACY BACK !!!
Chuck Barbarow


Yes, bloatware is annoying

From Josh Kirschner on March 12, 2018 :: 2:39 pm

We hate bloatware as much as anyone. Fortunately, it’s better than it used to be as phone carriers have gotten the message that users hate it. If you want to avoid bloatware entirely, you can always buy your phone directly from Google or many models unlocked via Amazon:


Unlocked phones also have the bloatware...

From Charles Barbarow on March 13, 2018 :: 6:24 am

Thank you Josh for your reply… but I had purchased a Verizon ” unlocked” Samsung 6 a couple years ago and had the same issue ...there were a ton of Verizon apps you could not delete…

Your point also brings another issue to the table regarding instructions and advice on the internet… finding out that many instructions throughout the web are not accurate at all….



Buy via Google or Amazon, not Verizon

From Josh Kirschner on March 13, 2018 :: 10:31 am

Hi Charles,

As I noted above, to avoid bloatware you should buy unlocked phones via Google or Amazon (direct).  If you buy from the carrier then, yes, they may still put their firmware with crapware on it.

If you have a phone from a carrier with all the crap, you can blow away the carrier firmware and install stock android, though that requires a bit more technical knowledge.


Just a Really Late comment

From addermc on September 01, 2020 :: 9:32 pm

Just a Really Late comment to@Charles Barbarow comment. “Good Luck with That”.Completely understand this statement though. And only phones I found without googles “snake"bloat ware is Huawei, Honor. But since it’s Chinese company it’s on the"Bane List"of Trump administration.



From msaint on September 28, 2021 :: 3:59 pm

True dat my friend. Manufacturers also sell all our personal info to anyone who can pay for it. So does Facebook and any other site we log onto, including this one.


So true, was just reading

From Addermc on November 23, 2021 :: 11:52 pm

So true, was just reading how apples iphone has some settings that enable it to stop trackers and ADS from following you everywhere. Apparently DuckDuckGo(DDG) now has a similar technology they came up with I guess for the same issue. My issue with DDG is how denied storing Anything of it’s user’s. Even after reviled they do, still denied it. Only to say later, that info was stored to check for misspelled words.
(🤨whaaat??)spell check covers that. Uses Amazon server’s, reports back to Amazon. Are how CEO Gabriel first project"Names Database” stored the real names and addresses to it’s users Without permission and then sold the site to"” WITH all the recorded data for $10M Cash!! And guess who show’s up claiming to be a private browser few years later?? No it wasn’t something like"ChickenChickenStop” Yeah, no I don’t use DDG or CCS…..


pre installed apps

From Kristin Gavin on December 09, 2021 :: 6:50 am

The only way around this to my knowledge is to buy your phone outright.  Unfortunately, most people are stuck by contract in their phone commitments but if you have the opportunity we have had success with this. Good luck to you and Merry Christmas!


Agree 100%

From Chrystine on December 29, 2021 :: 10:18 pm

It is sickening and horrifying how any privacies or right to have any privacy whatsoever,  were just vanished out of existence from the entire population of earth using a bunch of innocuous “click here” boxes. No one seems cognizant of it , No one seems to mind, it is all unconditionally accepted. The new mindset is ” I have nothing to hide. Of course I agree. what do I care if they know where I go, what I buy, who I talk to, or what I do?” No one GETS it. I am enraged, angered, smoldering beyond furious and completely frustrated. If we all would step up en masse - it would stop . It could be stopped. But no one has even the slightest bit of moxy to even consider it. The invasions we are subjected to hour by hour from services which we pay for (through the nose mind you) is unconscionable and highly illegal under any other circumstances. But because it is not publicized, discussed, or even seen by most people since it is usually on page 5 written with font size 4 within 16 pages or so of terms and conditions. No one knows. Or has any clue what to do to effectuate a change. It is the big tech companies that collect everything we have and are and they share with each other and three letter agencies all of it. We are filed and detailed, categorized, databased , assigned to algorithms, social scored so any bit of anything we are can be easily accessed. They probably have created alternate straw similes of all of us so they can predict us and someday will complete the connection by uploading all of us into their metaverse and will utilize our physical activities to power their online system. I have seen copies of the patents for the process.  It is so out of control and needs to be stopped in a big way . If anyone knows of any way please let me know. One thing we can do is to try and get the law changed about information that has been collected about us. Right now the law says what they collect about subscribers and users is owned by the collecting company to use as they see fit. If we can get the law changed so WE, the individual, own any and all information and facts, activities, any files compiled and info aggregated that contains any and all info about ourselves collected by any company or business or app and we alone dictate who gets it or uses it or where it is stored, then we take back a small bit of control and can maybe start to stop this insanity


System files 12GB out of 14GB

From Tim on March 10, 2022 :: 9:48 pm

How do we reduce system files? My phone says it has 6GB saved space out of 12 GB system files while phone only has total 14GB . So i dont have any space for photos, apps, videos…..i dont know why my phone has so much sytems file space and it clearly says out if 12GB there is 6GB saved space.


You can't reduce system file size

From Josh Kirschner on March 11, 2022 :: 2:50 pm

There is no way to reduce the system size and, yes, it’s pretty big (23gb on my S21). But most phones now have at least 64GB, many 128GB or more, so the system size shouldn’t be a significant issue. What device are you running that only has 14GB (16GB?) of storage? I’m guessing it must be quite old.


Android deep clean

From Ken on May 08, 2023 :: 8:00 pm

I agree with you 100% you are spot on about companies controlling our privacy rights it is happening with everything we do and it is wrong they should be sued that’s for sure. This country is in terrible shape.


turn on dev tools

From oelly on February 23, 2019 :: 3:19 pm

delete bloatware.  problem solved.


Gonna try make things right 4 my whoa man

From Mousescapades on June 13, 2019 :: 11:00 am

How is the phone. App messages using 2 numbers!!



From Nate on June 02, 2020 :: 8:03 pm

Bait and switch. Kick To Rocks


Phone hacked

From Devona on June 14, 2019 :: 1:57 pm

I want a private life an I am sick of someone Sharing my phone how do I keep them out of it


No Help...?

From G on June 23, 2021 :: 2:11 pm

If you ever get an answer please share! NO ONE will help me either and not only do I have to share but it spies on me constantly!



From Valerie Miler on June 20, 2019 :: 1:38 pm

Thank u so much for this helped me tremendously…it is well written and easy to understand for those of us less tech savvy…often times articles are written in a way beginners can’t understand, but not this one! Very helpful, thank you!



From Amir on October 04, 2019 :: 3:19 pm

My x hacked my for last 6years and I can’t do anything about it she was was using my phone when we broke up I was using my phone she sink my info in her account when I was trying to use it I don’t know what happen IAM so tried of it please can you help me please



From Nate on June 02, 2020 :: 8:01 pm

Go to new state and set up ur phone


My Samsung S10e has multiple of every app I the phone

From Paula Lowen on October 22, 2019 :: 12:26 pm

Hi my phone thinks it’s about 5 phones in one I have 4 to 6 of the same app tried everything put back to factory settings but it didn’t work as the phone when I reset and not backup the phone had nothing in it so I am having to put the back up back in and I am then back to square one with the phone running hot I spend most of the day cleaning as it keeps prompting me. I have used over 140gigabites since 10Aug to 5oct costing me a shit load. I had someone tell me to turn it off when not using it like my data and stuff.
The other promblem is to use anything in the phone I have to login 3 duffrent times every time even to answer a phone call by the time I have put the stupid codes the call has gone to message I never set them up it took me days to get back in the phone. I try to uninstall but it just will not let me and now I am to afraid to deleat uninstall anything please help I hate this phone. I have MS spinal cord injury so this whole expererance with my phone has become so so stressful I hate my phone biggest peice of crap I wish I never bought.
I am going to try to go to the samsanug STORE today if I can walk thanks from Paula 🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯🤯


Sounds like you're reinstalling a bad app

From Josh Kirschner on October 22, 2019 :: 1:18 pm

If the phone runs fine after the reset, but then starts acting up when you reinstall the apps, it sounds like one of the apps you’re reinstalling is causing the problem. You can see which apps are using your data in Android Settings (search for “app data usage”). Find out which is sucking up your data and remove it or change the app settings. In my experience, apps like Instagram can be the main culprit if you have it set to automatically download all images.

Not clear why you would need to log in more than once, if at all, to do things like answer a call. I would need to know more about exactly which apps/system areas are requiring you to log in and what your settings are - this is definitely not default behavior.



From Tracy on December 02, 2019 :: 9:44 am

I have a brother that hacked mine and my dad’s cell. I used recording app and I can hear him actually answer before it rings to person I called. He then adds my 2 siblings in on our conversation. We are able to hear them whispering in background. You also hear clicks of someone hanging up/picking up? Any idea how to get rid of him? My 3 siblings no longer talk with my dad or I. Haven’t for over 3 years, since my mom passed away.He knows things he would only know if listening in. Just need to remove him from our phones, any help appreciated.


Sue Google and Amazon

From Nate on June 02, 2020 :: 7:58 pm

Google controls my phone it will not let me take control of camera,mic or any apps I am very un happy with my new Blu G5 it came unlock but has a back door the size of Texas. I hate this phone.



From Nate on June 02, 2020 :: 8:01 pm

The phone is a bait and switch with the shitest battery ever! I can’t take this planed rock bottom!!!!Thanks for taking away God giving free will!!


Unwanted thing on my phone. That using these free clean to clean my phone dosen't work .

From john coffee on July 24, 2021 :: 5:00 am

They say that these are free to clean your phone when they don’t do anything.  But take up your data.


IT Infrastructure Setup

From IT Infrastructure Setup on December 23, 2022 :: 12:03 am

Amazing info I got from your blog, Good content! I am just reaching out to say keep up the good work.


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