Owners of modern media centers often face a situation where the purchased equipment does not give the expected image quality immediately after unpacking. Xiaomi Mi TV 4S model has an excellent matrix and supports Ultra HD resolution, but to activate maximum parameters often requires manual adjustment of signal sources. Without the right configuration, you can watch content in a regular Full HD, even if you broadcast it from a powerful console or media player.
The problem is not a panel defect, but rather standard data protocols, which by default limit the bandwidth of ports to be compatible with older devices. To unlock the potential of the screen, the user needs to switch mode on his own. HDMI-In this article, we will discuss in detail all the steps necessary to get an honest picture. 3840×2160 pixel.
Keep in mind that HDR10 and high color depth support also depends on external devices being connected correctly. If you use embedded apps, settings can apply automatically, but external sources require attention. Let's look at the technical nuances and algorithms for activating high-definition mode.
Verification of technical specifications and requirements
Before you go into the settings menu, make sure your equipment is physically capable of transmitting the required quality. Xiaomi Mi TV 4S has HDMI 2.0 ports that theoretically pass 4K at 60 frames per second. However, the cable connecting the devices often becomes the narrow neck of the entire system. Cheap 1.4 wires simply do not allow the flow of data of the desired volume.
It's also important to check the source of the signal. If you're connecting a game console or a computer, make sure that their own settings are set to 2160p. The TV can't artificially create parts where they're not in the original signal. It just displays what it gets through the interface.
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Use HDMI cables labeled "High Speed" or "Premium Certified" to ensure that 4K HDR signals are transmitted without loss of frames.
Note the refresh rate of the screen. 60Hz support is critical for smooth images in games or dynamic movies. Some older devices may only offer 30Hz, making cursor or camera movement twitchy and uncomfortable. The table below outlines the basic requirements for different use cases.
| Type of content | Required HDMI standard | Frequency of update | Support for HDR |
|---|---|---|---|
| Streaming services (Netflix, YouTube) | HDMI 2.0a | 24/30/60 Hz | Yes (HDR10) |
| Game consoles (PS5, Xbox) | HDMI 2.0b / 2.1 | 60 Hz and higher | Yes. |
| PC/Laptop | HDMI 2.0 | 60 Hz | Depends on the GPU. |
| Blu-ray 4K players | HDMI 2.0a | 24 Hz | Yes. |
Activation of the extended HDMI format
The most important step is to change the port mode. Android is the default system. TV, Xiaomi-mounted Mi TV 4S, uses a compatibility mode HDMI 1.4 This is done to ensure that the old DVD-The players and consoles worked correctly, and you have to force a specific port to switch to mode. HDMI 2.0.
To do this, take the remote control and go to the main menu. Find the gear icon in the upper right corner of the screen. You need to follow the path: Settings → Device → Settings → HDMI Login. In the list that opens, you will see all the available ports.
☑️ Incorporation algorithm 4K
Choose the port where your physical connection is located. 4K-source (e.g. source, HDMI 1 HDMI Change the value of c "HDMI 1.4 "HDMI 2.0." The screen can then blink or go out for a second, which is a normal reaction of rearranging the video processor.
⚠️ Warning: After switching mode on older monitors or projectors, the image may disappear completely. If it does, return the setting back to the image. HDMI 1.4. since the source device does not support the new protocol.
Set up image parameters for HDR
After activation of the port, the system must automatically determine the HDR-The signal will appear on the screen, the notification of the transition to mode. HDR. If that didn't happen, it's possible the source isn't transmitting metadata correctly.In the Xiaomi Mi TV image settings TV 4S Check the color profile.
Go to the Settings section → Image. Here you'll find some preset modes: Standard, Movie, Sport. HDR-The best way to do this is to use the Movie or Movie mode, because it is the most accurate way to convey the color gamut. The Bright mode often distorts the colors, making the picture unnatural.
Pay attention to the function as well. MEMC (In some Xiaomi models, it may conflict with HDR-If you notice strange stripes or flickering, try turning off motion improvement in advanced image settings.
What is Deep Color?
Use of built-in apps and streaming
If you watch movies through embedded apps like YouTube or Netflix, the setup process is simplified. Android TV itself coordinates settings with the server. However, 4K often requires a premium subscription from a content provider.
For example, on YouTube, quality can automatically decline when the Internet is slow. Press the menu button while playing video and manually select 2160p. If there is no such item, then the video is loaded in lower resolution, or the connection speed is unstable.
For streaming services, Internet connection speed is also important: a stable 4K stream requires a minimum of 25 Mbps. If the speed is lower, the system will constantly buffer the video or reduce the quality.
⚠️ Warning: Make sure your ISP plan allows you to achieve this speed and the router supports the 5GHz Wi-Fi standard for wireless data transfer without loss.
Solving black screen and signal problems
A common problem after HDMI 2.0 is turned on is a black screen or a "No signal" message, which could mean that handshake between devices didn't go away. Try restarting both devices: turn off the TV and console from the outlet for 10 seconds, then turn it on again.
Sometimes it helps to change the order of the switch on: first turn on the TV, wait for the desktop to load, and then turn on the console or console, which gives Xiaomi the time to correctly identify the hardware connected.
If the problem persists, check which port you've connected to.At the back of the Xiaomi Mi TV 4S ports may have different markings, often a port marked as ARC or HDMI 1, works more stable for 4K-Try reconnecting the cable to the next connector.
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The order of the devices (first TV, then source) often solves the problem of missing the image when switching to 4K.
Frequent questions and additional settings
Even after a successful setup, questions can arise about how to improve sound quality or remove input delay in games. Xiaomi Mi TV 4S has a special "Game Mode" that disables excess post-processing of the picture to reduce Input Lag.
Users are also interested in whether the settings affect the 4K for the life of the matrix. LED-The panels are designed to work in native resolution around the clock, and using maximum quality does not reduce the life of the TV, unlike older plasma panels.