Owners of the Xiaomi Mi 9C smartphone often face a situation where when calling in, the contact image is displayed only in a small circle, leaving a significant part of the display empty or drenched in monochromatic color. This is the standard behavior of the MIUI shell, designed to save resources and preserve the concise design of the interface. However, for many users, it is important to see the interlocutor or selected photo as much as possible in detail, filling all available screen space.
The problem of scaling the avatar is not solved by a single hidden button, but by a set of actions that include proper image preparation and system settings. In this article, we will examine all the available methods, from simple settings in the phone book to using specialized applications for editing contacts, you will learn to bypass the limitations of the system and make the call interface more personalized.
It is worth noting that the success of the operation depends on the quality of the original file and the version of the firmware installed. Different MIUI builds can interpret the user's display settings differently, so it is important to follow the instructions consistently, checking the result at each stage.
Why a photo doesn’t stretch across the entire screen by default
Xiaomi's Android shell system is originally programmed to display avatars in a round format. It's a design solution that ensures uniformity of the interface whether you have a photo of the contact or not. When you upload a regular rectangular image, the system automatically crops it, leaving the center part, and fits it into a circle.
And then there's the concept of a "safe zone." The operating system places the subscriber name, the response and reset buttons, and the hands-free widget. If you try to stretch a picture without taking those elements into account, the text can become unreadable or block important functional areas, which is why the standard algorithm compresses the image.
⚠️ Attention: Attempting to force stretching by system methods can lead to distortion of the proportions of the face or object in the photo, making the image unnatural.
Understanding these limitations helps to properly prepare a graphic file before downloading. If you want the photo to take up the maximum area, it should be pre-processed with the screen proportions of your Xiaomi 9C.
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Use high-resolution images (minimum 1080x1920 pixels) to ensure that the clarity of the picture is not lost when zooming.
Image Preparation: The Key to Success
The first and most important step is to choose and process the right image. Standard square or horizontal shots are not suitable for filling the entire screen of a vertical smartphone. You need to create or find an image that corresponds to the resolution of the device's display.
For the Xiaomi Mi 9C, the best way to do this is to have a vertical image with an aspect ratio of 19.5:9 or close to it. If you use an editor, set the canvas size to 1080x2340 pixels, which will allow the picture to fit perfectly into the screen boundaries without black fields on the sides.
It is also important to consider the central composition. Since the control buttons are located at the bottom of the screen during the call, and the status bar and name at the top, the main object (face) should be in the center of the frame. Leave about 15-20% free space or a blurred background at the top and bottom.
- 📐 Use apps like Snapseed or Lightroom to frame your photos in 9:16 format.
- 🎨 Apply blur to the edges of the image to hide possible zoom artifacts.
- 📱 Save the final file in format JPG quality 90-100% fast-load.
- 🖼️ Avoid small details around the edges of the frame as they can be cropped by the call interface.
After the image is prepared, it must be saved to the gallery, make sure that the file is readable by system applications and is not password protected in the hidden folder.
Configure the display through the standard phone book
The traditional way to install photos is to use the built-in Contacts app, which is a basic method that works on all versions of MIUI without the need to install additional software, but it has some zoom features that we talked about earlier.
To start, open the Contacts app and find the number you want in the list. Click on the subscriber name to go to the contact card. In the upper right corner or in the menu (three dots), select the Change or Edit option.
In edit mode, you'll see a camera icon or a person's silhouette in a circle, and if you click on it, you'll access the gallery. You'll select a pre-prepared vertical image. The system will suggest framing the photo by moving the frame.
☑️ Check before installing the photo
Try to fit your face into the circle as wide as possible, capturing the background you have prepared. Once confirmed, the system will apply cropping. When you call in, this photo will appear in the circle, but thanks to the background preparation, the visual effect will be more complete.
⚠️ Note: When editing through a standard gallery, the system can aggressively compress the image, so the source must be of high quality.
Use of third-party applications for contact management
If Xiaomi’s standard tools don’t work, specialized apps from the Google Play store come to the rescue. There are many utilities, such as Contacts+, Truecaller or EX Dialer, that allow you to flexibly customize the look of calls.
These applications often have their own databases and display mechanisms that ignore the system limitations of MIUI. They can force the image to stretch to the full screen, use a slideshow of several photos or add effects.
To install this software, go to Settings → Applications → Application Management. Find the installed phone book replacement and assign it to the default call app. This is a critical step, otherwise the system will continue to use the standard interface.
- 📲 EX Dialer – allows you to completely change the theme and scale of the photo.
- 📞 Truecaller – automatically uploads photos and has a full-screen display mode.
- 🎨 Contakt – allows you to create complex avatars with frames and backgrounds.
- ⚙️ Hi Contacts – has advanced synchronization and display settings.
Using third-party solutions gives you maximum freedom, but requires careful adjustment of permissions, the application needs to give access to the phone, contacts, gallery and, preferably, to the overlay (display over other windows).
Table of comparison of display methods
To make it easier for you to choose the right option, we have prepared a comparison table that will help you weigh the pros and cons of different approaches to personalizing the call screen on the Xiaomi 9C.
| Method | Photo quality | Difficulty setting up | Battery loading | Compatibility |
|---|---|---|---|---|
| Standard contacts | Medium (pruning) | Low. | Minimum | 100% |
| Third-party Dialer | High (full screen) | Medium | Medium | 95% |
| MIUI themes | Depends on the topic. | Low. | Low. | Depends on the version. |
| Photo editors | High (training) | Tall. | Minimum | 100% |
As you can see from the table, the standard method is the most stable, but it gives the worst visual result. Third-party applications win as a picture, but can consume more CPU resources.
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For maximum quality and full screen, it is best to use the combination: photo preparation in the editor + installation through a third-party Dialer.
Solving blackfield problems and distortions
A common problem after installing a photo is the appearance of black bars on the sides or top / bottom. This happens when the proportions of the image do not match the proportions of the screen Xiaomi Mi 9C. The display of this smartphone is elongated, and the usual photos 4:3 or 16:9 here look like inscribed in a rectangle.
To eliminate black fields, you need to go back to editing. Don't just try to stretch the photo, otherwise the face will flatten. Better add side stripes of the same color as the background, or use the "blur" function to fill the voids.
In some cases, the problem lies in the cache of the Phone app. If you have updated a photo and it shows old or distorted, try clearing the cache. To do this, go to Settings → Apps → All Apps → Phone → Memory → Clear the cache.
adb shell pm clear com.android.dialerThis command for advanced users (via ADB) completely resets the phone book data, which can help in difficult cases, but will require re-synchronization of contacts.
⚠️ Warning: Completely clearing the phone application data will delete your call history, so save important numbers beforehand.
Also check if the screen settings include "Enlarged Text" or similar accessibility features, which can scale the interface by shifting elements and disrupting the layout of the call screen.
Impact of MIUI themes on the call screen
The MIUI shell allows you to deeply customize the look through the Themes app. Changing the theme is one of the easiest ways to change the incoming call screen without installing unnecessary apps. Many themes have their own call design, where the photo is displayed differently.
Go to the Themes app, select Profiles or Components, find the Call Screen or Inbound Call, and you can choose a style where the photo occupies most of the screen or has the original frame.
Be careful, though: some themes may conflict with the system or not work properly on your Android version.Before installing, read reviews carefully and check compatibility with the Xiaomi Mi 9C.
Secret codes for verification
If you have a problem after changing the topic, try resetting the theme to the standard, and often it is the conflict of styles that leads to the photo "going" over the edges or not scaling.