If you’re a Xiaomi Redmi 9 owner and you notice a mysterious “full-screen mode” item in your settings, but don’t fully understand why you need it, this article is for you. Full-screen display (or Full Screen Display) appeared in Xiaomi smartphones a few years ago, but still raises questions among users. In this article, we’ll look at what exactly hides under this term, how the mode works on Redmi 9, and why turning it on can dramatically change your experience with your phone.
It’s important to clarify that full-screen mode on Xiaomi Redmi 9 is not just full-screen stretching, it’s a complex feature that affects interface display, control gestures, hiding system panels, and even some applications. For example, it can hide the soft navigation keys (back, home, recent) so that they don’t take up space on the screen, or make games and videos take up as much space as possible. But there are pitfalls: not all applications adapt correctly to this format, and some MIUI features can work differently.
We’ll go into all aspects of full-screen mode in detail, from basic onset to subtle settings to help avoid typical issues. If you want to learn how to control the Redmi 9 screen like a professional, read on.
What is the full screen mode on Xiaomi Redmi 9?
Full Screen Display is a MIUI feature that allows you to make the most of the screen area of the Xiaomi Redmi 9. In classic mode, part of the screen is occupied by system elements: the notification panel on top, soft navigation keys on the bottom (if they are enabled), as well as black fields on the sides in some applications. Full screen mode removes these restrictions, making the picture more immersive.
On Redmi 9, this feature is system-level and supported by most standard applications (gallery, video player, browser), but it depends on two key factors:
- 📱 Version. MIUI: In the old firmware (below) MIUI 12) full screen mode could work unstable. Redmi 9 out of the box is usually installed MIUI 11 or 12 where the function is already optimized.
- 🎮 Application support: Not all third-party programs (especially games) can scale properly. For example, some games may crop interface elements.
- 🔧 Gesture settings: If you use gestures MIUI Instead of classic buttons, full-screen mode will work differently – system panels will be hidden automatically.
Technically, the full-screen mode on Redmi 9 is implemented through two mechanisms:
- Software-based dashboard hiding: The system temporarily removes the status bar and navigation bar when you interact with content (e.g., scrolling through a feed on social media).
- Hardware zoom: For applications that don't natively support full-screen, MIUI stretches the image to fill the screen. This can lead to distortion.
How to turn on full screen mode on Redmi 9: step-by-step instructions
There are several ways to activate full-screen mode on Xiaomi Redmi 9, the easiest way is through system settings. Here are the detailed instructions:
- Open the Settings app (the gear icon on the home screen).
- Go to the Screen section.
- Select Full Screen Display (in some versions of MIUI, it may be called Full Screen Display).
- Activate the switch Full screen mode.
- (Optionally) Set up the panel concealment settings: 🔹 Automatic Hiding: Notification and Navigation Panels Will Hide After 5 Seconds of Inactivity. 🔹 Hiding by gestures: Panels are hidden when scrolling the screen up/down.
If your version of MIUI does not have a separate “Full-screen display” option, try an alternative path:
Settings → Special features → System settings → Full-screen modeYou can also turn on the mode directly from the notification panel:
- Swipe down from the top edge of the screen to open the notification bar.
- Find the Full-screen Mode icon (usually it looks like a rectangle with arrows at the corners). If it's not there, click on Edit and add it to the panel.
- Slip the icon to activate the mode.
☑️ Preparation for the inclusion of full-screen mode
Types of full screen mode: which to choose on Redmi 9
On Xiaomi Redmi 9, there are three full-screen display options available, each suitable for different scenarios.
| Type of regime | Description | Pluses | Cons |
|---|---|---|---|
| Automatic. | The system itself determines when to hide the panels (e.g. in games or videos). | 🔹 It does not require manual adjustment.🔹 Optimal for most tasks | 🔸 May not work in time (for example, hide the panels in messengers) |
| Hand (by gesture) | The panels are only hidden after swiping down/up the edge of the screen. | 🔹 Full control over display🔹 Suitable for working with documents | 🔸 It requires getting used to gestures. |
| Forced. | All apps open in full screen, even if they don’t support it. | 🔹 Maximum screen utilization | 🔸 Interface distortion in some applications🔸 Possible glitches with display |
For most Redmi 9 users, automatic mode is the best choice, balancing convenience with stability. If you play or watch videos often, try forced mode, but be prepared for the fact that some applications (such as banking) may not display correctly.
Tip: If you notice that some applications have lost interface elements (such as buttons in games) after you turn on full screen mode, try adding them to exceptions.
- Go to Settings → Screen → Full-screen display → Exceptions.
- Select the applications for which you want to disable full screen mode.
💡
If the navigation soft keys are missing in full screen mode, swipe from the bottom up and hold your finger – they will temporarily appear.
Full-screen issues on Redmi 9 and their solutions
Despite the obvious advantages, the full-screen mode on the Xiaomi Redmi 9 can cause a number of problems, and here are the most common ones and ways to fix them:
- 🖥️ Black fields on the sides in games/video: This means that the app does not support Redmi 9 (19.5:9) screen aspect ratio. → Screen. → Full-screen display → Forced full screen. Add the problem app to the list. Restart the app. ⚠️ Note: In some games (for example, PUBG Mobile or Call of Duty Forced mode can cut off important interface elements (map, control buttons.
- 🔄 Notification and navigation panels are not hidden: Check if the appropriate options are enabled in the full screen settings. Also make sure that in Settings → Battery and productivity → Power saving mode is not activated by ultramode – it can block some screen functions.
- 📱 Screen blinks or twitches when scrolling: This is a typical problem when using gestures MIUI Solution: Go to Settings → Screen. → Full screen display. Turn off Hiding as you scroll. Use manual gestural concealment of panels.
The sound was lost in full screen mode
If none of the methods helped, try resetting the screen settings to factory:
Settings → System → Reset settings → Reset screen settingsWhat if the full screen mode is not turned on at all?
Full screen mode in games and video: features on Redmi 9
One of the main advantages of the full-screen mode on the Xiaomi Redmi 9 is the improved experience in games and when watching videos. However, there are some nuances that are worth knowing about.
For games:
- 🎮 Support for aspect ratio: Most modern games (PUBG, Free Fire, Genshin Impact are optimized for full-screen mode and automatically adjust to the Redmi 9 (19.5:9) screen. PE) There may be black fields.
- 🕹️ Position of controls: In some shooters (such as Call of Duty: Mobile), the shooting or jump buttons can shift to the edges of the screen.
- 🔥 Performance: Full-screen mode slightly increases the load on the processor, as the system has to scale the picture. 9 with his helio G80 This is not usually critical, but in heavy games it can lead to a decrease in performance. FPS on 5-10%.
For the video:
- 🎬 YouTube and streaming services: Full-screen mode works perfectly - the video stretches to the full screen without black bars.
- 📺 Local Video Files: In Standard Player MIUI (Video) Full screen is automatically enabled (VLC, MX Player) may require manual adjustment.
- 🔊 Full-screen sound: In rare cases, when you stretch a video, the sound can become quieter. MIUI, player-reset.