You are at the pharmacy counter with three people behind you, trying to pull up
your rewards code. Your thumb slides past a screen of icons you do not recognize — a flashlight, a
cleaner with a little rocket on it, a second weather app, a scanner you installed for one restaurant
menu two summers ago. Four swipes later you find the card. Nobody sets out to fill a phone with
icons. It happens one download at a time.
Most articles hand you a list and tell you to start deleting. Do it backwards. Your phone already
counted what every app costs you — in storage and in battery — on two screens you have probably
never opened. Five minutes there changes which apps you delete and which you only quiet down.
First, read the two numbers
Storage, iPhone (iOS 26, and the same place on newer versions):
Settings → General → iPhone Storage. Give it a
minute to count. You get a usage bar, Apple’s recommendations behind Show All, then
every app listed by size, biggest first. Storage, Android:
Settings → Apps → See all apps → the app →
Storage & cache. Google’s own warning covers every Android step below: settings
can vary by Android device. When a path does not match, type the name of the screen into the search
bar at the top of Settings.
Battery, iPhone: Settings → Battery →
View All Battery Usage, then tap a day. The App and System
Activity section lists the percentage of battery used by each app, split into On
screen and Background. That split is the catch below.
Battery, Android: Settings → Battery →
Battery usage → View by apps, on Android 14 and up.
1. The cleaner, the booster, the “speed up your phone”
No official guide from Apple or Google tells you to install one. Google’s own fix for a slow phone
is force stop, then restart, and the cache these promise to clear is already a button on your own
Storage & cache screen. On iPhone it cannot even work: Apple builds the system so one app cannot read or change
what another app stores.
2. The flashlight app
Your iPhone has a flashlight in Control Center. Your Android has a flashlight tile
in Quick Settings. Why this one is worth naming: on December 5, 2013, the FTC
charged the maker of Brightest Flashlight Free with sending users’ precise
location and unique device identifier to third parties, including ad networks.
3. The phone antivirus
Apple states it plainly: sandboxing is designed to prevent apps from gathering or modifying
information stored by other apps. An iPhone “antivirus” scans nothing, because nothing is allowed
to. Android already runs Play Protect, on by default. And a security app is still
an app with permissions: on February 22, 2024, the FTC announced a $16.5 million action against
Avast over browsing data sold to more than 100 third parties through its Jumpshot subsidiary, while
the product promised to block tracking.
4. The manufacturer duplicate you never chose
Two browsers. Two galleries. Two app stores. One came with the phone, one came with your habits.
You hit the wall in about ten seconds: Google says you can’t delete some system apps that came
pre-installed on your Android phone, and that on some phones you can turn them off instead. On a
Samsung, press and hold the icon on the apps screen for Uninstall or
Disable — not every app offers either.
5. The keyboard you tried once
A third-party keyboard sits between your thumbs and everything you type, your bank app included.
Not using it? Take it out today.
- iPhone: Settings → General →
Keyboard → Keyboards. Tap Edit, tap the
delete button next to the keyboard, tap Delete, then tap
Done. - On one you keep, tap its name and check Allow full access. Google’s note for
Gboard on iPhone: with Full Access on, your searches are sent to Google. - Android: Settings → System →
Keyboard → On-screen keyboard. Android shows a security
warning when you enable a new keyboard — read it instead of tapping past it.
6. The QR code scanner
iPhone: open Camera in Photo mode, point it at
the code, tap the link at the bottom of the screen. Android: the camera with
Camera scan suggestions on, or the Scan QR code tile in
Quick Settings. The separate app does nothing your camera does not.
7. The weather app allowed to follow you all day
Keep this one. You just do not want it awake all day. iPhone:
Settings → Privacy & Security → Location
Services → the app → While Using the App, not Always.
Turn Precise Location off too; approximate is plenty for a forecast.
Android: Settings → Apps → the app →
Permissions → Allow only while using the app.
8. The store, hotel or airline app you open once a year
Do not delete this one. Park it. On iPhone, tap the app inside iPhone
Storage and you get two choices: offload it, which Apple describes as freeing the storage
used by the app while keeping its documents and data, or delete it, which removes the app and its
related data. To make it automatic, stay on the iPhone Storage screen: open
Show All under the recommendations at the top and tap Enable on the
one about unused apps. The same switch also lives in Settings →
Apps → App Store — it used to sit directly under
Settings, which is why older tutorials send you to a screen that is no longer
there.
On Android: Settings → Apps → the app →
Archive. Google’s description: when an app is archived, your device removes its
software, permissions and temporary files and stops notifications, but keeps the app icon and your
data. On that same app screen, leave Manage app if unused on and your phone will
archive it for you later; turn it off and it never will. The icon stays on your home screen, faded,
with a small badge on top — tap it and the app reinstalls itself.
The catch: the two numbers live on two different screens
Storage and battery are never shown together, so people delete an app hoping to fix both and fix
neither.
On the storage side, the app and its data are two different things. Apple’s
wording: offloading frees the storage used by the app but keeps its documents and data, and the
Documents & Data line lists what the app is holding. An app that looks small on
the list can be sitting on gigabytes of downloaded files. Tap it and read its own screen — the size,
and in many cases when you last used it — before you decide.
On Android, Storage & cache gives you two buttons that only look alike.
Clear cache deletes temporary files and the app rebuilds them.
Clear storage — labeled Clear data on Samsung — permanently
deletes all of that app’s data. Do that to a messaging or banking app and you are back to a fresh
install: logged out, history gone.
On the battery side, the On screen versus
Background split is the answer. An app with a big number under On
screen drained battery because you were using it — deleting it gives you nothing back. An
app burning under Background works while you are not looking, and on Android you
need not delete it: Settings → Apps → the app → App
battery usage → Allow background usage → Optimized puts
it back to sleep.
And the ones you cannot delete at all
| What you want | iPhone | Android |
|---|---|---|
| Gone completely | Delete, if Apple allows it | Uninstall, if the maker allows it |
| Gone, data kept | Offload | Archive |
| Stopped, not removed | No equivalent | Disable |
Apple publishes the list of built-in apps you may remove — Mail, Maps, Weather, Calculator, Clock,
Contacts and about two dozen more. Phone, Messages, Safari,
Camera, Photos, App Store and
Settings are not on it, and iPhones have no “disable” — you can only Remove
from Home Screen, hide the app, or limit it in Screen Time. Removing a
built-in app also removes its user data and configuration files: the Weather app forgets your
cities. On Android the button is Disable — it stops the app running and takes it
off your list, but do not expect storage back.
How to know it worked: reopen the same storage screen and let it recount — the
names at the top should have moved. Tomorrow, check Battery and see whether the
app you quieted down dropped out of the Background column. If neither number
moved, you cleared the wrong thing.
Do this tonight, not the day your phone fills up: open the storage
screen, read the top five names, and handle one — delete the flashlight, or archive the airline app.
Five minutes, nothing lost. We publish one plain-English guide like this every week — leave your
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