Many Xiaomi smartphone users are faced with the desire to expand the functionality of their device, and often this request is formulated as a search for a way to make a dual screen on the Redmi Note 7. In fact, this concept can hide several different functions, from the banal splitting the screen into two parts for simultaneous operation of applications to more complex manipulation of the system code to hide bangs or cloning accounts. Understanding the differences between these modes is key to properly configuring the gadget.
Owners of the popular Xiaomi Redmi Note 7 often look for ways to visually split the display to improve productivity. The standard MIUI shell provides powerful multi-tasking tools that do not require the installation of third-party software. However, there are hidden engineering menus that allow you to change the display of the top of the display, which some users mistakenly perceive as creating a second screen.
In this article, we will take a closer look at all aspects of your display, including Split Screen mode, hidden resolution settings, and app cloning, and learn how to manage windows, change pixel density, and use all the features of the Android operating system on your device to turn your smartphone into a full-fledged working tool.
Split Screen Split Screen Mode
The most common way to get two screens on a single device is to activate Split Screen mode, which allows you to run two apps simultaneously, sharing the display horizontally. On the 6.3-inch Redmi Note 7, this is especially convenient for messaging while watching videos or comparing products in an online store.
To activate this feature, you need to open the menu of running applications. This is done by swiping from the bottom up with a finger delay or pressing a special navigation button if it is enabled in the settings. In the list of running programs that opens, you need to find the application icon that you want to place at the top of the screen.
- 📱 Press and hold your finger on the app icon in the recent task menu.
- ✂️ In the context menu that appears, select the option "Share screen" (an icon with two rectangles).
- 🔄 Select the second application from the list or run it from the desktop.
- ↔️ Move the dividing line with your finger, adjusting the size of the windows at your discretion.
It is important to note that not all applications support split-screen operation. Some programs, especially banking or DRM-protected content, can be forced to close or display a message of incompatibility, in which case the system will prompt you to open the application in normal full-screen mode.
Hiding the display cutout through the engineering menu
Many users looking for a dual screen actually want to hide the notch under the front camera by turning the top of the display black. This creates a visual effect of the second display or simply makes the interface more symmetrical. On the Redmi Note 7, this can be done through a hidden engineering menu that requires you to enter special code.
To get to the menu you need, open the Phone app and dial the combination ##6484##. This command opens the CIT engineering menu. However, to change the cutout parameters, you often use another way through the developer settings or special codes, which may differ depending on the version of MIUI. If the direct code does not work, you can use the debugging menu.
⚠️ Warning: Changes to the engineering menu can cause the system to run in an unstable way. Be careful and remember the initial values before changing them.
An alternative and safer way is to use standard interface settings. Go to Settings → Advanced Settings → Full-screen mode. Here you can choose how apps will use the cutout area: hide it by turning the top state bar black, or stretch the content over the entire area, a software solution that does not require root rights.
What if the code doesn't work?
Application cloning and second account
Another interpretation of dual screen is that you can use two accounts in the same app at the same time, and the app Twin feature in MIUI allows you to run a second instance of a messenger or social network, which is equivalent to having two phones in the same case.
To set up this feature, go to Settings → Apps → App Cloning. The list will show programs that support copy creation. Usually WhatsApp, Telegram, Viber, Facebook and popular Chinese social networks. Activating the switchboard opposite the desired application, you will get an exact copy of it with a red icon in the corner.
The second one works independently of the first one: it has its own notifications, its own settings and its own account, and it is the ideal solution for those who share personal and work spaces or use two. SIM-The system distributes the processor resources between the two running copies.
- 🔔 Notifications from a cloned app come with a distinctive sound and icon.
- 🔋 Dual operation of background processes can increase battery consumption.
- 📲 You can clone only one app at a time, but of different types (for example, two WhatsApp and two Telegram).
☑️ Pre-cloning testing
Setting up DPI density and scaling
For advanced users who want to change the perception of space on the screen, a minimum width setting (DPI) is available, which allows the interface to be compressed to make elements smaller but put more information on the screen, creating an increased workspace effect, which is comparable to connecting a second monitor.
This setting is hidden in the developer menu, and to activate this mode, you need to quickly click 7 times on the build number in the Settings → About phone section. After the message "You became a developer" appears, a new "Developers" item will appear in the settings menu.
Inside the menu, find the Smallest width option. The standard value for Redmi Note 7 is usually 392 dp. Reducing this number (for example, to 360) will make all items larger, and zooming in (to 420-450) will make everything smaller.
| Parameter DPI | Visual effect | Recommendation |
|---|---|---|
| 360 - 380 dp | Larger elements, less content | For users with poor vision |
| 392 dp (Standard) | Balance of size and capacity | Recommended factory value |
| 410 - 440 dp | Small elements, lots of content | For experienced users and tablets |
| 480+ dp | Very small, risk of being readable | Not recommended for everyday use |
⚠️ Note: If you set a high value DPI and the interface will become unreadable, you can reset the settings only through Hard Reset or flashing the device.
Use of floating windows
Floating Windows in MIUI 11 and later allows you to display applications as small windows on top of other programs. This is another step towards multitasking, reminiscent of working with windows on a computer. You can watch videos in a small window while you chat or chat web pages.
To activate a floating window, launch the application in split-screen mode, and then press the central split button between the windows. In the menu that appears, select the "Floating window" mode. Now the application can be moved around the screen and resize it.
This feature is especially useful when using the navigator while communicating in the messenger or waiting for the confirmation code from the SMS, which comes in the form of a pop-up window.
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To quickly create a floating window, run the app, swipe from the corner of the screen to the center, and hold your finger if the appropriate gesture setting is enabled in MIUI.
Frequent problems and their solution
With active use of split-screen and cloning functions, users may face a number of technical difficulties, most often problems are associated with a lack of RAM, since the Redmi Note 7 in the basic versions has 3 or 4 GB of RAM.
If the split screen is not working properly (black screen, freezes), try clearing the cache of the problem app or updating it to the latest version, and it is also worth checking whether the "Energy Saving" mode is turned on, which may limit the background activity of the second window.
In some cases, after updating the firmware, the DPI settings or hidden menus may be reset. This is normal security behavior. Before performing complex manipulations, it is always recommended to back up important data.
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The stability of the dual screen depends on the amount of free RAM and optimization of specific applications by developers.