Why Xiaomi Redmi 7 is slowing down and how to speed up its work

Many owners are faced with a situation where the once-quick Xiaomi Redmi 7 suddenly starts to run slowly, open apps for a long time or freeze when switching between tasks. This is a common problem for devices released several years ago, and it often involves the accumulation of system debris, outdated software parts or physical wear of components. Understanding why the phone brakes is the first step to restore its performance without having to immediately buy a new gadget.

The performance decline can be caused by both software conflicts and a banal lack of free space on the internal drive. The MIUI operating system that is equipped with a smartphone tends to overgrow background processes that consume CPU and RAM resources. If you notice that the device has become hot or the battery is discharged faster than usual, these are sure signs that the system requires deep optimization.

In this article, we will discuss the main causes that affect the speed of your device, and offer step-by-step instructions for eliminating them. We will not use complex technical terms without the need for each user to safely perform the recommended actions and return their gadget to a second life.

Lack of internal and operational memory

One of the main reasons why Xiaomi Redmi 7 is starting to slow down is the critical lack of space. Android requires constant access to free space to create temporary files and cache; when the drive is more than 90% full, data write speeds drop dramatically, leading to noticeable delays when starting applications, installing updates, and even when simple typing.

RAM also plays a key role in multitasking: If you have many tabs open in your browser or background applications, the system lacks the resources to switch them instantly, which means that the processor has to constantly unload and download data from storage, which creates a “slowdown” effect of the interface.

To solve this problem, you need to regularly audit installed applications and media files, delete unused games, transfer photos and videos to a memory card or cloud storage, and pay attention to the Download folder, which often accumulates APK installation files and documents that are no longer needed.

System services also take up space, and cleaning them can yield tangible performance gains. Use built-in tools or third-party utilities to find duplicate files and clean up the cache.

• 🗑️ Remove apps you haven’t used in the last 3 months.
• 📸 Transfer heavy videos and photos to the cloud (Google Photos, Yandex.Disk).
• 🧹 Clear the cache of messengers (Telegram, WhatsApp) as they can take up gigabytes.
• 📂 Check the Bluetooth folder and MIUI for the presence of old logs and files.

⚠️ Note: Do not delete system files from Android root folders unless you are sure of their purpose, this can lead to unstable system operation.

Overflowing cache and system debris

While each application is running a smartphone, it creates temporary files to speed up its work, but over time, this cache grows and gets in the way. Instead of speeding up the launch, the huge amount of data in the cache causes the memory controller to work with overload, which is especially noticeable on models with eMMC 5.1, as in Redmi 7. This is one of the common reasons why the phone begins to “think” when opening a menu or gallery.

In addition, the system accumulates residual files from remote programs and error logs that take up valuable space. The standard MIUI cleaner does a good job of basic cleaning, but for deep diagnostics, it is better to use specialized tools or manually checking storage. Regular cleaning helps maintain a stable interface response rate.

It's important to understand the difference between useful data and junk. Card cache, for example, can take hundreds of megabytes, but removing it will cause apps to download maps again, consuming traffic. So the approach should be balanced: clear the cache of heavy applications (YouTube, browsers, social networks), but leave the data of the navigators if you often use them offline.

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Use the Cleanup feature in the Security app once a week to automatically delete temporary files and release RAM.

Users often forget that messengers are the main generators of garbage. Telegram and WhatsApp store all the images and videos viewed in the phone's memory, unless you set up automatic cleaning. Go to the settings of each messenger and find the item "Memory Use" or "Data and Storage" to manage the cache.

Background processes and application autoloading

Modern applications tend to be online, which leads to the launch of many background services. With Xiaomi Redmi 7, with its modest RAM by modern standards, this becomes a bottleneck. When dozens of processes simultaneously try to update data, check email or determine geolocation, the processor does not have time to process user actions, which is expressed in lags and friezes.

Special attention should be paid to autoboot. Many programs prescribe themselves to autostart, starting with the system and remaining active even when rolled up, not only slows down, but also speeds up battery drain. Control of autoboot is one of the most effective ways to speed up the device without losing functionality.

The MIUI shell has a built-in permissions and autorun management mechanism that users often ignore: Turn off autoruns for all applications that don’t need to run all the time (e.g., an online store doesn’t need to hang in memory 24/7) and free up resources for ongoing tasks.

• 🚫 Turn off auto-start for games and rarely used utilities.
• ⚙️ Limit background activity in battery settings for energy-intensive applications.
• 📉 Reduce the number of widgets on your desktop as they are constantly updated.
• 🔍 Check the list of running processes in the developer menu.

⚠️ Note: Do not disable system processes with the name "System", "MIUI", "Google Services, or the phone may not work properly or stop receiving notifications.

Obsolescence of software and firmware

Software is a living organism that needs updates. However, for Redmi 7, the situation is twofold: on the one hand, new versions of MIUI can be heavier for the old hardware, on the other hand, old versions contain bugs and security holes. Often the brake problem arises after a failed update or, conversely, because of its absence, when new versions of applications cease to optimize for the old OS.

If you upgrade to the latest available version of MIUI and notice a performance drop, it may take time for the system to index files and optimize databases.In the first days after the update, the phone may run slower than usual. However, if the situation does not improve after 3-5 days, it is worth considering resetting or rolling back firmware.

Check for updates manually by going to Settings → About Phone → MIUI version. Sometimes automatic updates fail due to server errors or a crowded update cache, in which case you can download the current firmware from the official website and install it manually through the Recovery menu.

Also, newer versions of apps (Instagram, Facebook, banking customers) are becoming more resource-intensive, and on an older device, even with current firmware, they can run slowly, in which case using lightweight versions of apps (Lite) or web versions of services helps.

Interface animations and visual effects

The beauty of the MIUI shell comes from a lot of transition animations, background blurs and live wallpaper. It's not noticeable to powerful flagships, but Redmi 7 may not be able to handle rendering complex graphics in real time. Turning off or speeding up animations is a proven way to visually speed up the smartphone, making the system's response sharper.

The developer menu has the animation scale settings hidden in it. It's set to 1x by default, which means standard speed. By changing those values to 0.5x or turning off animation completely, you'll reduce the time you draw transitions between windows. It won't add power to the processor, but it will create a sense of instantaneous response to touch.

Also, avoid live wallpaper and heavy themes. A static, simple desktop image loads the GPU less than a constantly moving picture, which is especially true if you use a dark theme that can cause additional computational costs on some types of screens and older versions of Android.

To access hidden settings, you need to activate the developer menu. Tap the build number in About Phone 7 times in a row, and then a new "Developers" option will appear in the advanced settings, where the sliders are located.

Technical reasons: wear of the storage device and overheating

Physical factors can't be ruled out, either: Smartphone flash has a limited resource of overwrite cycles. After a few years of heavy use, memory cells wear out, which leads to slower read and write speeds, which manifests itself in long system loads, file freezes, and general interface lags. Unfortunately, software-based wear and tear cannot be fixed.

Another enemy of performance is overheating. When the CPU temperature reaches critical levels, the trottling mechanism is triggered to prevent damage to components. The phone starts to run very slowly until it cools down, which often happens when you use a navigator in the sun, talk long, or charge during games.

Compare the impact of different factors on productivity in the table below:

If the phone is warming at rest, this may indicate a battery failure or short circuit in the power supply chain, in such cases, it is recommended to contact the service center for diagnosis, as further operation can be dangerous.

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Physical wear of memory and battery is a natural aging process of electronics that cannot be completely eliminated by software methods.

Radical measures: Resetting to factory settings

When all optimization methods have been tried, but Xiaomi Redmi 7 continues to slow down, the last and most effective tool is a complete reset to factory settings (Hard Reset), which removes all user data, applications, settings and accumulated over the years of use of “garbage”, returning the system to the “out of the box” state.

Before starting the procedure, be sure to back up all important data: contacts, photos, documents. Use Mi Cloud or Google Drive cloud services, or copy files to your computer. After resetting, it will be impossible to recover deleted information without a backup.

You can reset via the settings menu by selecting Advanced Settings → Recovery and Reset → Reset. An alternative is to use a recavery menu (clamping the power and volume button when the phone is off), which is useful if the phone is so hung that it cannot enter the menu.

⚠️ Warning: Make sure the battery is at least 50-60% before starting a reset so that the phone doesn’t turn off in the process, which can damage system files.

After reset, take your time to install all the applications at once. Install only the essentials and watch the device work. Often it turns out that the brakes were caused by one particular conflict software that you just didn't notice before. The clean system on Redmi 7 is still capable of comfortable use of basic functions.

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