Xiaomi Redmi 7 smartphone owners often face the need to stream content from a small screen to a large TV display, whether it’s watching family photos, running videos from a gallery, or even launching mobile games for more comfortable gameplay. Current technology allows you to do this without using wires, exclusively through a wireless Wi-Fi connection, which provides freedom of action and no confusion in the cables.
The process of syncing a device with a Smart TV can vary depending on the version of the MIUI operating system and the model of the TV itself. In this guide, we will discuss in detail all available methods, from built-in system functions to third-party applications that guarantee stable image transfer, you will learn how to avoid typical errors and ensure minimal signal latency.
It’s worth noting that the quality of wireless broadcasting is directly dependent on the speed of your router and its location. For best results, it is recommended to use a 5 GHz network if your equipment supports this range, this is especially true for gaming and watching video in high resolution, where every millisecond of response is important.
Technical requirements and equipment preparation
Before you start setting up, you need to make sure that your equipment meets the minimum technical requirements.Redmi 7 smartphone has a Wi-Fi module that supports media transmission standards, but to properly work Miracast or Google Cast TV also needs built-in support for these protocols.If you have a regular TV without Smart-features, you will need an additional adapter, for example, Chromecast or Miracast-dongle.
The critical condition is that both devices are on the same local network, and the router acts as an intermediary that transmits data packets between the phone and the TV. If your phone is connected to 4G mobile Internet and the TV is connected to home Wi-Fi, you can't establish the connection. Check the router's settings: sometimes the guest networks isolate devices from each other, blocking detection.
It’s also worth updating your smartphone software to the latest available version. From the Settings menu → About your phone, check for MIUI system updates. Developers often release patches that improve wireless connectivity stability and fix compatibility errors with different TV models.
☑️ Checking connection readiness
Use of the built-in Translation function in MIUI
The easiest and most reliable way to do this without additional software is to use the system utility Broadcast. In the MIUI shell installed on Redmi 7, this tool is integrated deep into the system and optimized to work with most popular TV brands. To run, open the notification curtain and find the icon Translation or Cast. If the icon is not in quick access, go to Settings → Connection and Sharing → Broadcast.
Once the function is activated, the phone will start searching for available devices on the network. At that point, the TV screen should have an app open for receiving the signal, which is often called Screen Mirroring, Miracast or simply Translation. When the list scans the network, you will see the name of your TV, clicking on it initiates the handshake protocol, after which the image from the smartphone screen will appear on the large display.
⚠️ Warning: The first time you connect to your TV screen, you may receive a request for confirmation of access, be sure to agree to it within 30 seconds, otherwise the connection will be severed for security reasons.
It's important to understand the difference between modes of operation. Mirroring broadcasts everything that happens on the phone screen, including notifications and calls. If you want to watch video in the background, this method may not be the most convenient, since the phone screen will burn constantly, consuming battery power.
What to do if the broadcast is interrupted?
Broadcasting through YouTube and streaming services
If your goal is to watch videos rather than mirror the interface, it’s much more effective to use the built-in Chromecast feature inside apps. Services like YouTube, Netflix or IVI have a special broadcast button that looks like a rectangle with waves in the corner, a method preferred because the video is buffered directly by the TV, unloading the Redmi 7 processor and saving battery life.
To get started, make sure that the app on your phone and the app on your TV (if any) are updated. Click on the broadcast icon, select your TV from the list. Unlike system broadcasting, here the phone acts only as a remote control: you can turn the application, answer calls or play games, and play video on the TV will not be interrupted.
The picture quality in this mode is often higher, as the TV itself decorates the video stream using its powerful codecs. This allows you to watch content in 4K, even if the phone screen has a lower resolution. However, to work this method, the TV must support the Google Cast protocol or have a built-in YouTube app.
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Use Do Not Disturb mode on Redmi 7 while watching movies through the system broadcast so that incoming messages do not overlap the image on the entire TV screen.
Third-party applications for enhanced capabilities
In some cases, standard tools may not work properly, especially if you're trying to connect your phone to an older-gen or brand-specific TV, and third-party solutions from Google Play come to the rescue. One of the most popular and functional applications is Web Video Caster or TV Cast, which can throw video files from sites directly to the TV, bypassing buffering on the phone.
Another powerful tool is the LocalCast app, which allows you to stream not only videos, but also photos and music from Redmi 7 local memory or cloud storage, and the interface of these programs is usually intuitive: after you run, you scan the network, and you select the target device, and some applications allow you to control playback using gestures or voice commands.
Be careful when choosing free versions of such programs, as they are often overflowing with ads that may pop up at the wrong time.Pay versions tend to offer more stable connection and support for HEVC or Dolby Vision codecs, which is critical for owners of modern 4K TVs.
| Annex | Type of transmission | 4K support | Advertising |
|---|---|---|---|
| Systemic “Translation” | Screen mirroring | Depends on TV. | No. |
| YouTube / Netflix | Flow (Casting) | Yes. | No. |
| Web Video Caster | Stream from sites | Yes. | Got it (free) |
| LocalCast | Local files | Yes. | Got it (free) |
Solving problems with latency and image quality
One of the most common problems with wirelessly connecting Redmi 7 to a TV is cursor or image lag, especially in games or when using the phone as a remote control, and the delay is due to the time it takes to encode the picture on the phone, transmit it over Wi-Fi and decode it on the TV, which can be reduced by closing the background apps on the smartphone and freeing up RAM.
If you see artifacts, squares in an image, or periodic declines in image quality, this indicates a lack of channel bandwidth. Try switching the router to a less busy channel or, if possible, connecting the TV to the router via a LAN cable, leaving the phone on Wi-Fi. This stabilizes the receiving side.
⚠️ Warning: Do not use power saving mode on Redmi 7 during broadcast.The system can artificially limit the performance of the processor and Wi-Fi module, which will lead to jerks of the image.
It’s also worth checking the output resolution. In the broadcast settings (if available in the app you’re using), you can try to reduce the resolution from 1080p to 720p. This will reduce the amount of data you transmit and can make the picture smoother on an unstable connection.
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The stability of wireless broadcasting is 80% dependent on the quality of the Wi-Fi signal and the distance between the router and the devices.
Frequent questions and expert answers
Even if all instructions are followed, users may have specific questions about the Redmi 7 or specific use cases, and here we have collected answers to the most popular queries to help resolve the remaining ambiguities.