How to Fix Infinix Smart 20 With Slow UI

If your Infinix Smart 20 feels slow, freezes when switching apps, delays when opening the keyboard, or lags while scrolling, the phone may be running out of memory, storage, or background resources.

This does not always mean the phone is broken. Slow UI on the Infinix Smart 20 can happen because of too many background apps, low storage, heavy animations, app cache, outdated software, widgets, notifications, or a third-party app causing problems.

Start with the simple fixes first. Restart the phone, check storage, close heavy apps, then adjust XOS settings that can make the interface feel lighter.

Quick answer

To fix an Infinix Smart 20 with slow UI, restart the phone, free up storage, uninstall unused apps, clear app cache, update XOS and apps, reduce animations, turn off unnecessary background activity, and remove heavy widgets or live wallpapers.

If the phone became slow after installing an app, uninstall that app first. If the UI is still slow after all basic fixes, back up your files and consider a factory reset.

Infinix Smart 20 slow UI diagnostic table

Symptom	Likely cause	What to check first
Home screen lags	Widgets, live wallpaper, launcher cache	Home screen setup
Apps open slowly	Low RAM or too many background apps	Recent apps and app usage
Keyboard appears late	Keyboard cache or low memory	Keyboard app settings
Phone freezes after update	App optimization or system bugs	Software and app updates
Scrolling feels choppy	Animations, heavy apps, low storage	Display and developer settings
Phone slows after installing apps	Bad or heavy third-party app	Recently installed apps
Lag happens while storage is full	Low internal storage	Storage manager
UI becomes slow when online	Syncing, ads, background data	App background activity
Phone heats and slows down	Heavy app, gaming, hotspot, charging use	Battery and running apps
Phone is slow even after reset	Possible hardware or storage issue	Infinix support or Carlcare

Why is my Infinix Smart 20 UI slow?

Your Infinix Smart 20 may feel slow because it is an entry-level Android phone that has limited performance headroom compared with mid-range or flagship phones. It can still run well for basic use, but it may slow down when too many apps, files, services, and visual effects are active at the same time.

Common causes include:

Too many apps running in the background
Low internal storage
Large app cache
Heavy social media apps
Live wallpaper or too many widgets
Outdated XOS software
Outdated apps
Too many notifications
Auto-start apps
Poorly optimized third-party apps
Full WhatsApp, Messenger, TikTok, or Facebook cache
Heavy games or multitasking
System animations making the phone feel slower

The goal is not to make the Infinix Smart 20 perform like a gaming phone. The goal is to make the UI smoother for everyday tasks like messaging, calling, browsing, watching videos, opening apps, and switching between screens.

1. Restart your Infinix Smart 20

Start here before changing deeper settings.

A restart clears temporary system glitches, closes stuck background processes, and gives XOS a clean session. If the phone has been running for several days without restarting, this alone may improve UI speed.

How to restart:

1. Press and hold the Power button.
2. Tap Restart.
3. Wait for the phone to turn back on.
4. Use the phone normally for a few minutes.
5. Check if the lag improves.

This will not delete your photos, apps, contacts, or files.

If the phone is frozen, press and hold the Power button for about 10 seconds until it restarts.

2. Free up internal storage

Low storage is one of the biggest reasons an Infinix Smart 20 starts to feel slow. When the phone has very little free space, apps take longer to open, the keyboard may lag, and the system may struggle to save temporary files.

Check storage:

1. Open Settings.
2. Tap Storage.
3. Check how much space is free.
4. Delete files you no longer need.
5. Move photos, videos, and downloads to a microSD card or cloud storage.

Focus on these first:

Old videos
Duplicate photos
Large WhatsApp media
TikTok downloads
Screen recordings
APK files
Old documents
Downloads folder
Offline videos from streaming apps

Try to keep at least a few gigabytes free. The more breathing room the phone has, the smoother XOS usually feels.

3. Uninstall apps you do not use

Unused apps can still slow the phone down. Some apps run background services, send notifications, sync data, or update silently even when you rarely open them.

Remove apps you do not need:

1. Open Settings.
2. Tap Apps or App Management.
3. Choose an app you no longer use.
4. Tap Uninstall.
5. Restart the phone after removing several apps.

Pay attention to apps like:

Cleaner apps
Battery saver apps
Unknown APK apps
Duplicate browsers
Old games
Shopping apps you rarely use
Random wallpaper apps
Launchers
VPN apps you no longer trust

Be careful with “phone booster” apps. Some of them can make the phone worse because they keep running in the background, show ads, or aggressively close apps that Android needs.

If your Infinix Smart 20 became slow after installing one specific app, remove that app first.

4. Clear cache for heavy apps

App cache can help apps load faster, but it can also become bloated over time. Social media apps, video apps, browsers, and messaging apps can store a lot of temporary data.

Clear cache for heavy apps:

1. Open Settings.
2. Tap Apps or App Management.
3. Choose a heavy app like Facebook, TikTok, Instagram, Chrome, YouTube, Messenger, or WhatsApp.
4. Tap Storage.
5. Tap Clear cache.

Do not tap Clear data unless you understand what it does. Clearing data can reset the app and may remove saved settings or offline files.

Apps worth checking first:

Facebook
TikTok
Instagram
Chrome
YouTube
Messenger
WhatsApp
Telegram
Shopee or Lazada
Mobile games

After clearing cache, restart your phone and check whether the UI feels faster.

5. Update XOS and your apps

Software bugs can cause slow UI, app freezing, battery drain, and random lag. App updates can also fix poor performance, especially if one app is misbehaving after a recent change.

Update your Infinix Smart 20:

1. Open Settings.
2. Tap System.
3. Tap System update or Software update.
4. Download and install any available update.

Update apps:

1. Open Google Play Store.
2. Tap your profile icon.
3. Tap Manage apps and device.
4. Tap Update all.

Also check any Infinix system apps if your phone shows updates through the built-in app store or system update tool.

If the phone became slow right after a major update, give it a day or two. Android may still be optimizing apps, rebuilding cache, and syncing background data. If the lag continues after 48 hours, continue with the next fixes.

6. Limit background apps and auto-start apps

Some apps keep running even after you close them. This can slow the Infinix Smart 20 because memory and processor resources are being used in the background.

Check background app settings:

1. Open Settings.
2. Tap Battery.
3. Tap Battery usage or Power consumption.
4. Look for apps using power in the background.
5. Restrict background activity for apps that do not need to run all the time.

Also check auto-start settings if available:

1. Open Phone Master or Settings.
2. Look for Auto-start management.
3. Turn off auto-start for apps that do not need instant notifications.

Keep auto-start enabled for important apps like:

Phone
Messages
WhatsApp if you need instant messages
Messenger if you rely on it
Banking apps if needed
Security or authenticator apps

Turn it off for apps like:

Shopping apps
Games
Wallpaper apps
Random utility apps
Video editing apps
Food delivery apps you rarely use

Do not restrict every app. If you block messaging apps too aggressively, notifications may arrive late.

7. Remove live wallpapers and heavy widgets

The home screen can slow down if it has too many widgets, live wallpapers, animated themes, or third-party launchers.

Try a lighter setup:

1. Remove live wallpaper.
2. Use a static wallpaper.
3. Remove widgets you do not need.
4. Avoid animated themes.
5. Use the default launcher if a third-party launcher feels slow.

Widgets that can affect performance include:

Weather widgets
News widgets
Clock widgets with animations
Music widgets
Battery widgets
Social feed widgets
Cleaner widgets

To remove a widget:

1. Press and hold the widget.
2. Drag it to Remove.
3. Restart the phone.
4. Test the home screen again.

If the phone feels smoother after removing widgets, the issue was likely the launcher or home screen load.

8. Reduce animations

Animations make the phone look smoother, but they can also make a slower phone feel delayed. Reducing animations can make the Infinix Smart 20 feel faster when opening apps, switching screens, and going back to the home screen.

First, enable Developer options:

1. Open Settings.
2. Tap About phone.
3. Tap Build number several times until Developer options are enabled.
4. Enter your lock screen password if asked.

Then reduce animations:

1. Open Settings.
2. Tap System.
3. Tap Developer options.
4. Find Window animation scale.
5. Set it to 0.5x or Off.
6. Find Transition animation scale.
7. Set it to 0.5x or Off.
8. Find Animator duration scale.
9. Set it to 0.5x or Off.

Use 0.5x if you still want the phone to feel natural. Use Off if you want the fastest response.

Do not change other Developer options unless you know what they do.

9. Boot into Safe Mode to check for bad apps

Safe Mode helps you check if a downloaded app is making the Infinix Smart 20 slow. In Safe Mode, third-party apps are temporarily disabled.

How to use Safe Mode:

1. Press and hold the Power button.
2. Touch and hold Power off.
3. Tap Safe Mode if the option appears.
4. Wait for the phone to restart.
5. Use the phone for a few minutes.

If the UI is faster in Safe Mode, a downloaded app is probably causing the slowdown.

What to do next:

1. Restart normally to exit Safe Mode.
2. Uninstall recently installed apps one by one.
3. Restart after each uninstall.
4. Check if the phone becomes faster.

Start with apps installed before the slowdown began.

Look closely at:

Free VPN apps
Cleaner apps
Battery saver apps
Wallpaper apps
Modded APKs
Unknown launchers
Apps installed outside Google Play
Games with floating tools or overlays

If Safe Mode does not improve performance, the issue may be storage, software, settings, or hardware wear rather than one specific app.

10. Back up your files and factory reset the phone

Use factory reset as the last solution. It can fix deep software problems, corrupted settings, app conflicts, and long-term system clutter. But it will erase your phone, so back up your data first.

Back up important files:

Photos
Videos
Contacts
WhatsApp chats
Documents
Downloads
Banking app access
Authenticator codes
Notes
Messages if needed

Factory reset steps:

1. Open Settings.
2. Tap System.
3. Tap Reset options.
4. Tap Erase all data or Factory data reset.
5. Read the warning carefully.
6. Confirm the reset.
7. Set up the phone again.

After the reset, do not reinstall every old app immediately. Install only the apps you really use. Test the phone for a few hours before restoring everything.

This helps you avoid bringing the same slowdown back.

Best settings to keep Infinix Smart 20 smooth

Use a simple home screen
Keep storage free
Restart the phone once or twice a week
Uninstall apps you no longer use
Avoid unknown APK files
Keep XOS updated
Keep apps updated
Use a static wallpaper
Limit auto-start apps
Clear cache for heavy apps once in a while
Avoid installing multiple cleaner apps

When should you get your Infinix Smart 20 checked?

Get the phone checked if:

It is slow even after a factory reset
It freezes on the lock screen
It restarts by itself
It overheats during simple tasks
Apps crash constantly
Touch response is delayed even in Safe Mode
Storage errors keep appearing
The phone becomes unusable after a system update

If the phone is still under warranty, contact Infinix support or visit an authorized service center such as Carlcare before paying for repair.

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