How to take a full-screen photo of a caller on Xiaomi Redmi Note 8T: 5 working ways

Are you tired of a tiny photo of a contact when you call a Xiaomi Redmi Note 8T? Want a subscriber photo to occupy the entire screen, like on commercials or more expensive smartphones? Unfortunately, standard MIUI firmware does not provide such a feature out of the box - but that does not mean that it is impossible to implement.

In this article, we’ll break down 5 proven methods to increase a caller’s photo to full screen, from hidden MIUI settings to third-party apps and modifications to system files. It’s important to understand that some methods require root rights or custom firmware installation — we’ll honestly warn you about the risks and complexities of each option. If you’re willing to experiment with your Redmi Note 8T settings, read on!

Why does MIUI not show the full screen photo by default?

Smartphone manufacturers, including Xiaomi, often limit the size of the photo contact displayed when an incoming call is made for several reasons:

📱 Ergonomics of the interface: a small photo leaves room for the "Response/Deflect" buttons and information about the caller (name, number, geolocation).
🔋 Resource savings: Full-screen rendering requires more RAM, which can slow down on budget devices.
🎨 Design standards MIUI: The company adheres to a uniform style for all models, where the contact photo is only part of the incoming call screen.
🛡️ Security: A large photo can close important notifications (e.g., recording a conversation or a loud bundle turned on).

But these limitations don't mean that Redmi Note 8T users are doomed to small photos, but there are workarounds, from simple customization to deep customization, and we'll look at them all, starting with the safest ones.

📊 Have you ever tried changing the screen of an incoming call on Xiaomi?

Yeah, but it didn't work.

Yeah, and I did.

No, I haven't.

I didn't know it was possible.

Method 1: Configure the standard application "Phone" (without root)

Before you resort to radical measures, check the hidden settings of the standard Phone app in MIUI. Some versions of the firmware for the Redmi Note 8T have an option to zoom in on photos, but it is hidden in the depths of the menu.

Follow the instructions:

Open the Phone app (the tube icon on the home screen).
Slip on three dots in the upper right corner → select Settings.
Go to Incoming Calls (or Call Screen depending on the MIUI version).
Find the call screen style option or inbound call layout.
Choose Full Screen or Enlarged Photo (if available).

If you don't have one, don't worry. Most MIUI versions for the Redmi Note 8T (especially Android 9/10) don't have one, so move on to the following.

💡

Before changing your settings, back up your contacts via Settings → Google → Backup. This will save your data when crashes.

Method 2: Using third-party applications for calls

If standard MIUI settings don't allow you to zoom in, you can replace the Phone system app with an alternative one. There are several apps on Google Play that support full-screen photo-contact display, the best of which are:

Annex	Support for full-screen photo	Additional functions	Cons
Truecaller	✅ Yes (in the theme settings)	Spam Definition, Call Recording, Blacklist	Advertising in the free version requires a lot of permissions
ExDialer	✅ Yes (paid version)	Color Customization, Widgets, T9-set	The interface is outdated, plugins are purchased separately
Drupe	✅ Yes (in the premium version)	Quick access to contacts, integration with messengers	High subscription price, complex interface
Simple Dialer	❌ No.	Minimalist design, no advertising	Limited customization

To customize a full-screen photo in Truecaller (the most popular option):

Install the app from Google Play.
Open Settings → Themes.
Choose a Full Screen or Max Photo theme.
In the Call Screen section, activate the option to Show the full screen photo.
Make Truecaller the default app for calling in Android settings.

Install the app from the official store |Sync contacts |Set the theme of the call screen |Make the application the main one for calls |Check the work in test mode-->

An important nuance: third-party apps can conflict with Xiaomi system services, especially if you have dual apps or performance mode activated. If calls stop coming after installation, check the permissions for the application in Settings → Apps → Truecaller → Permissions.

Method 3: Modification of system files (requires root)

For advanced users who are ready to root their Redmi Note 8T, there is a method of editing the system files responsible for displaying the call screen, which only works on MIUI firmware 11-12.5 and can lead to unstable phone operation!

You'll need:

🔓 Root access (for example, via Magisk).
📂 Root Explorer (application for working with system files).
💾 Backup copy of original files.

Instructions:

Open Root Explorer and go to /system/priv-app/InCallUI/
Find the file. InCallUI.apk And then you can copy it to a safe place (for example, to a safe place). SD-map).
Open the file in APK Editor (install from Google Play).
Go to res/values/dimens.xml.
Find the lines with the parameters: <dimen name="call_card_photo_size">120dp</dimen> <dimen name="call_card_photo_margin">16dp</dimen> and change the meanings to: <dimen name="call_card_photo_size">500dp</dimen> <dimen name="call_card_photo_margin">0dp</dimen>
Save the changes by overwriting the original file.
Reboot the phone.

What if the call screen stopped working after the modification?

If after changing files, the screen of the incoming call turned black or crashes, return the original version. InCallUI.apk Also check the file access permissions (must be rw-r)--r--) and clear the phone app cache in the settings.

⚠️ Note: This method may disrupt other functions associated with calls (such as recording conversations or displaying a contact name).Be sure to have a full system backup before experimenting. TWRP Or Mi Flash Tool.

Method 4: Install custom firmware with full screen mode

If you don't like the limitations of standard MIUI, you can install an alternative firmware that uses full-screen photo out of the box. Redmi Note 8T (codename willow) is suitable for:

🔄 LineageOS is pure android open source. supports call screen themes.
🎭 Havoc-OS – firmware with advanced interface customization.
🔥 Pixel Experience – firmware with design from Google Pixel, including a full-screen call screen.
🛠️ MIUI Pro - modified version MIUI extra-tune.

The process of installing custom firmware includes:

Unlock the bootloader via Mi Unlock Tool (requires a Xiaomi account binding).
Installation of custom recavator TWRP or OrangeFox.
Formatting data, system, cache sections.
Install ZIP-file firmware and GApps (if you need Google services).

⚠️ Attention: custom firmware installation will void Xiaomi warranty and may cause the device to "brick" when errors occur. 8T (codename willow on the forum XDA Developers or 4PDA.

💡

Custom firmware gives you maximum customization freedom, but it requires technical skills. If you're a beginner, you'd better focus on methods 1-2.

Method 5: Using the Xposed Framework (for power users)

For those who don't want to change the firmware, but are ready to experiment, the Xposed Framework, a platform for modifying system functions without changing the firmware, can be used to install a module that forcefully enlarges the photo of the contact.

Algorithm of action:

Install Xposed Installer (requires root).
Download the Xposed MIUI Call Screen Modifier or GravityBox module.
Activate the module in Xposed and restart the phone.
In the module settings, find the option of Call Photo Size or Fullscreen Caller Image.
Set the 100% for the scale of the photo.

Advantages of the method:

✅ No need to change firmware.
✅ Flexible setting (you can adjust not only the size of the photo, but also transparency, animations).
✅ It is easy to revert to the original settings.

Disadvantages:

❌ It doesn't work on all versions. MIUI (It can cause crashes of system applications).
❌ Requires regular module updates.
❌ Security issues are possible (some banking apps block Xposed devices).

Comparison of all methods: which one to choose?

To make the choice easier, we have compiled a comparative table of all methods, taking into account their complexity, risks and effectiveness:

Method	Difficulty	Need root?	Risks.	Efficiency
MIUI settings	⭐ (simple)	❌ No.	No.	⚠️ It rarely works.
Party of annex	⭐⭐ (middle-of-the-road)	❌ No.	Conflicts with MIUI, advertising	✅ Good.
Editing system files	⭐⭐⭐ (difficult)	✅ Yes.	High (risk "brick")	✅ Great.
Custom firmware	⭐⭐⭐⭐ (difficult)	✅ Yes.	Critical (loss of warranty)	✅✅ Best result.
Xposed Framework	⭐⭐⭐ (difficult)	✅ Yes.	Medium (instability)	✅✅ Good.

Our advice:

📱 Beginners: Try Truecaller (method 2) or check hidden settings MIUI (method).
🔧 Advanced users: If there is root, try editing system files (method 3).
🛠️ Enthusiasts: installing custom firmware (method 4) will give maximum freedom.

FAQ: Frequent questions about full-screen photos on the Redmi Note 8T

Can I increase the photo of the caller without root?

Yes, but the choice is limited. The most reliable ways to do this without root are to use third-party apps (like Truecaller), to check hidden settings in the standard Phone app (some versions of MIUI have an option), and without root, you can't edit system files or install Xposed.

Why did the system file change the screen to black?

This is a common mistake when editing incorrectly. InCallUI.apk. Possible causes: Incorrect values in dimens.xml (for example, too much importance for call_card_photo_size). File access rights are violated (must be) 644 or rw-r--r--). Incompatibility with the version MIUI (Solution: Restore the original file from a backup or reinstall the Phone application via ADB.

Will the full screen photo work on MIUI 13/14?

Since MIUI 12.5, Xiaomi has tightened control over system files, and manual editing of InCallUI.apk often causes app crashes. Alternatives: Use Truecaller or other third-party calls. Install custom firmware (e.g. LineageOS 20). There are no confirmed working methods for MIUI 13/14 rootless as of 2026.

Can I return the standard call screen after the experiments?

Yes, in most cases. rollback methods: For third-party applications: uninstall the program and return the default system application Phone in the settings. For modified files: restore the original version of InCallUI.apk from backup. For custom firmware: swipe the original MIUI through the Mi Flash Tool. If the call screen stopped working at all, try resetting the Phone application to Settings → Apps → Phone → Storage → Reset.

Is there a risk of losing the warranty when changing the call screen?

Depends on the method: ✅ Safe: use of third-party applications (method 2), settings MIUI (method). ⚠️ Risky: editing system files (method 3) – may result in loss of warranty if the service center detects changes. ❌ Warranty is canceled: unlock the bootloader, install custom firmware or Xposed (methods 4-5). If the warranty is important, limit the first two ways.