Xiaomi smartphone owners often face the question: How do you find out the total time of a device? This information is useful when buying a used phone, diagnosing a battery or just out of curiosity. Unlike the iPhone, where the data about the time of operation is hidden deep in the system, MIUI offers several ways to get this information β from standard tools to engineering menus.
However, not all methods are equally accurate. For example, screen time statistics show only active use, not full uptime of the device. In this article, we will discuss 5 proven methods, from simple to advanced, and explain why the data may differ and how to interpret it correctly.
If you need to check your phone before you buy, note the difference between battery life and battery status, for example, if the device shows 1000 hours of operation, but the battery runs out in 3 hours, this is an occasion to think about replacing components.
1. Standard screen time statistics in MIUI
The easiest way to do this is to use the built-in MIUI statistics, which show the time of active screen use, but don't take into account the background of the system, but they are useful for estimating the intensity of the operation.
To open up the statistics:
- Go to Settings β Accounts and Sync β Usage Statistics (on new versions of MIUI 14+, the path may differ: Settings β Battery and Performance β Battery Use β Watch icon in the upper right corner).
β οΈ Note: This data is reset after resetting the settings or replacing the battery.If the seller claims that the phone was used little, but the statistics show 50+ Watching a screen a week is a sign of active use.
View the total screen time per week
Compare with the time of work in the background
Pay attention to the most "glutty" applications
Check the date of first inclusion (if available)-->
2. Engineering menu: hidden data about the uptime
For those who are willing to dig deeper, there is an engineering menu (Engineer Mode) that contains technical logs, including the total operating time of the device since the first onset, which works on most Xiaomi, Redmi and POCO models, but requires caution.
Instructions:
β οΈ Note: Not all Xiaomi models support this code. On some devices, the engineering menu may be blocked by the manufacturer. If the code does not work, try an alternative:
##284##What to do if the engineering menu is not opened?
3. Analysis applications: AccuBattery and CPU Monitor
The app side often provides more detailed information than standard tools, with AccuBattery and CPU Monitor being the two most popular options, not only showing battery life, but also analyzing battery wear, processor temperature and other parameters.
AccuBattery (free, with premium options):
- π Shows the total time of operation since the installation of the application.
- π Estimates battery health by number of charging cycles.
- β‘ Tracks the discharge rate in standby and under load.
- π Keeps history of use (useful for comparison before/after battery replacement).
CPU Monitor (paid, but with trial period):
- β±οΈ Records the time of processor activity (useful for overheating diagnosis).
- π He plots the loads on the cores.
- π Shows awake time β the time when the device is awake (including background processes).
β οΈ Note: These apps only start collecting data after installation. If you bought a used phone, ask the seller to show the history to AccuBattery (if they used it.
π‘
Before installing AccuBattery, calibrate the battery: completely discharge the phone before turning off, then charge to 100% without interruption, which will improve the accuracy of readings.
4. system logs via ADB: for advanced users
If you want the most accurate data on the time of the device from the moment of the first turn on, you can access the system logs through ADB (Android Debug Bridge), which requires a computer and basic command line skills.
Instructions:
- Install ADB Tools on your PC.
- Turn on USB Debugging on your phone: Settings β About Phone β MIUI version (click 7 times to activate Developer Mode), then Settings β Additional β Developers β Debugging over USB.
- Connect your phone to your PC and type in the command line: Adb shell dumpsys battery Find uptime is the time youβve been working with the last reboot in milliseconds.
- For total operating time, use the command: adb shell cat /proc/uptime The first parameter will show uptime in seconds.
π Output example: If the command returned 3600.00 1200.00, it means that the device is running 1 hour (3600 seconds) from the last restart.
π‘
ADB-It gives you the most accurate data, but it requires technical skills, and use it if other methods don't work or if you need official information (for example, for warranty repairs).
5. Check through Xiaomi service centers
If you are buying a phone with your hands and doubt the honesty of the seller, the most reliable way is to contact the official service center Xiaomi.
- π Date of first inclusion.
- β³ Total working hours (in hours).
- π Number of reboots.
- π Battery replacement history (if warranty-based).
The cost of such a check is usually 300-800 rubles, but it is justified when buying an expensive device (for example, Xiaomi 13 Ultra or Black Shark 5). Service centers can also detect replacement of components (for example, if the operating time does not correspond to the state of the battery).
β οΈ Note: Some unofficial services offer "checking by" IMEI" It's 100 to 200 rubles, and most of the time, it's a scam. IMEI You can only know the model and date of activation, but not the time of operation.
Comparison of methods: which way to choose?
Not all methods are equally effective, and here is a table comparing the accuracy, complexity and availability of each method:
| Method | precision | Difficulty | Required. root/ADB | Suitable for used phones |
|---|---|---|---|---|
| MIUI statistics | Low (screen only) | Just | No. | Partially. |
| Engineering menu | Uptime (medium) | Middle-Average | No. | Yes. |
| AccuBattery/CPU Monitor | High (from the moment of installation) | Just | No. | Not (unless you've been there before) |
| ADB-team | Maximum | Hardly. | Yes. | Yes. |
| Service centre | Maximum | Just (paid) | No. | Yes. |
For most users, the best option is a combination of MIUI statistics and an engineering menu, and if you need data for warranty repair or authentication, you should contact the service.
Frequent Mistakes and How to Avoid Them
When you check Xiaomi's time, many people make common mistakes that distort the results.
Mistake 1: Confusing screen time and total operating time
Statistics in Settings β The battery only shows active usage, not full uptime. For example, if the phone was standing for a week in standby mode, this time is not counted.
Mistake 2: Ignore the resetting of settings
After resetting to factory settings, all meters (including the engineering menu) are reset, so if the seller claims that the phone is new, but the operating time is 0 hours, this is a sign of a reset.
Mistake 3: Trusting data without calibration
Apps like AccuBattery require initial setup, and if you don't calibrate the battery, you can underestimate the reading by 10 to 20 percent.
Mistake 4: Not counting battery replacement
If the battery has changed, the "start time" may not match the actual age of the device. Always check the charging cycles in AccuBattery.
π‘
If the phone is less than 100 hours, but the battery is bloated or quickly goes down - this is a sure sign of changing the battery or resetting meters.