Have you noticed that your smartphone on Android discharges in half a day, although it used to hold a charge until the evening? Or does the battery drain by 20-30% per hour in standby mode? This is a common problem, but it can be resolved without purchasing a new battery. In 80% of cases, it is not the physical wear of the battery that is to blame, but software settings, background activity of applications and unoptimized system processes.

In this article - 10 working methodshow to extend the operating time of your phone Android (relevant for Samsung Galaxy, Xiaomi Redmi, Google Pixel, Realme and other brands). We will analyze both basic settings and hidden functions that are not written about in standard instructions. And at the end - a FAQ with answers to the most frequently asked questions about the battery.

1. Check the actual condition of the battery

Before optimizing the system, make sure that the problem is not physical wear of the battery. On Android there are built-in diagnostic tools, but they are often hidden.

How to check the health of the battery:

  • 🔋 On Samsung: go to Settings → Device maintenance → Battery → Battery status. If the capacity is below 80%, it's time to change the battery.
  • 📊 On Xiaomi/Redmi/POCO: enter the code in the "Phone" application ##4636##, select "Battery Information". Parameter level —current charge, health —state (ideal good).
  • 🛠️ Universal method: install the application AccuBattery (free in Google Play). It will show the real capacity, the number of charging cycles and wear rate.

Critical value: if the battery capacity has dropped below 70% of the factory one, software methods for increasing operating time will be ineffective. In this case, the battery must be replaced.

⚠️ Attention: On some models Huawei i Honor (especially those released before 2021) diagnostic codes may not work due to manufacturer limitations. In this case, use third-party applications.

2. Disable unnecessary background processes

Many applications continue to run in the background, even when you do not use them. They update data, send notifications and consume battery. (Facebook, Instagram, TikTok) and instant messengers.

How to limit background activity:

  1. Go to Settings → Applications.
  2. Select an application (for example, Facebook) → Usage batteries.
  3. Activate the option Limit background activity or Optimize.
  4. For radical savings: in the same menu select Data management → disable Background data.

For mass disabling:

  • 🔄 On Android 12+: Settings → Battery → Adaptive Battery Mode (enable the system itself will limit rarely used applications.
  • ⚡ On MIUI (Xiaomi): Settings → Battery and performance → Selecting battery mode → select Saving charge.
📊 Which application drains your battery the most?
Social networks (Facebook, Instagram)
Messengers (WhatsApp, Telegram)
Games (PUBG, Genshin Impact)
Navigators (Google Maps, Yandex.Maps)
Other

3. Optimize screen settings

The display is the main consumer of energy in a smartphone (up to 40-50% of charge) can add 1-2 hours of battery life.

Key ones. parameters for optimization:

Parameter Recommended value Battery saving
Brightness Automatic (up to 60%) or manual on 40-50% up to 25%
Refresh rate 60 Hz (instead of 90/120/144 Hz) up to 20%
Screen timeout 15-30 seconds up to 10%
Adaptive brightness Enable up to 15%
Dark theme Enable (on AMOLED screens) up to 10%

How to change the screen refresh rate:

  • 📱 On Samsung Galaxy S22/S23: Settings → Display → Screen refresh rate → select Standard (60 Hz).
  • 🔄 On OnePlus/Nothing: Settings → Screen → Refresh rate → 60 Hz.
  • ⚠️ On Xiaomi s MIUI 14: the option may be called Adaptive frequency — disable it for fixed 60 Hz.
💡

On phones with AMOLED screens (for example, Samsung Galaxy or Google Pixel), the dark theme saves up to 30% of the charge when viewing content. On LCD displays (most budget models) there is a difference. is minimal.

4. Manage connections: Wi-Fi, mobile network, Bluetooth

Wireless modules constantly scan networks, exchange data and consume energy. Optimizing their operation can add up to 30% of battery life.

What can be done:

  • 📶 Mobile network: If the signal is weak (1-2 bars), the phone spends more energy searching for a network. Turn on the mode 2G/3G in the SIM card settings (if you do not need high-speed Internet).
  • 🔌 Wi-Fi: Disable automatic connection to public networks (Settings → Wi-Fi → Advanced → Auto-connect).
  • 🔵 Bluetooth: Disable if you are not using a headset or smartwatch. Even in standby mode, it consumes ~5% of the charge in 8 hours.
  • 📍 Geolocation: Switch to mode GPS only (without) use of mobile data and Wi-Fi) or disable it completely.

For advanced users:

adb shell settings put global wifi_scan_always_available 0 # Disables constant scanning Wi-Fi

adb shell settings put global bluetooth_on 0 # Completely disabling Bluetooth at the system level

These commands require ADB developer rights. Use with caution!

⚠️ Attention: On some firmwares. (for example, ColorOS from Oppo/Realme) disabling geolocation may disrupt the operation of system services, such as weather or clock. Before changing settings, check dependent functions.

5. Clean your phone from "gluttonous" applications

Some apps are consuming. a disproportionate amount of energy due to poor optimization, advertising modules or hidden mining. How to identify and remove them:

Top 5 applications that drain the battery the fastest:

  1. Facebook i Facebook Messenger - up to 15% charge per hour with active use.
  2. TikTok —high-resolution video + background loading of content.
  3. Google Play Services —system process, but sometimes it crashes due to errors.
  4. Games (PUBG Mobile, Genshin Impact, Call of Duty)—load on the processor and screen.
  5. Applications with constant geolocation (Yandex.Maps, Google Maps, Uber).

How to find and remove "energy talk":

  1. Go to Settings → Battery → Battery usage.
  2. Look statistics for the last 24 hours. Applications with consumption >5% are candidates for removal or limitation.
  3. To remove system applications (for example, Facebookpreinstalled on Samsung) use ADB: 
    adb shell pm uninstall -k --user 0 com.facebook.katana

Delete unused apps

Limit background activity for social networks

Disable auto-updates of applications in Google Play

Replace "gluttonous" applications with lightweight alternatives (for example, Facebook Lite instead of the main Facebook)

Check battery statistics once a week-->

6. Set up energy saving mode

All modern smartphones on Android have built-in battery saving modes, but few users use them correctly. These modes not only limit performance, but also optimize the operation of processor cores and reduce voltage on components.

Types of modes and their features:

Mode What limits Increase in autonomy When to use
Adaptive Background processes, brightness, CPU frequency +15-20% Constant
Medium + mobile data limitation, disable AOD +30-40% At 30-50% charge
Maximum Disables most background tasks, reduces screen resolution +50-70% At 10-20% charge
Ultra (on some models) Leaves only calls and SMS, disables all applications +100%+ In emergency cases

How to enable:

  • 🔋 On stock Android (Pixel, Motorola): Settings → Battery → Power saving mode.
  • ⚡ On Samsung: Settings → Device maintenance → Battery → Power modes.
  • 🔄 On Xiaomi: Settings → Battery and performance → Battery mode → select Super battery saver.

Hidden trick: on some phones (for example Samsung Galaxy S23 Ultra) you can configure automatic switching on mode energy saving at a certain charge level. To do this:

  1. Go to Settings → Device maintenance → Battery.
  2. Click on the three dots in the upper right corner → Additional.
  3. Enable the option Adaptive energy saving and set the threshold (for example, 30%).

7. Update the firmware and system kernel

Manufacturers regularly release updates that optimize energy consumption. For example, Android 13 added a function App Hibernatethat “freezes” unused applications, and Android 14 improved the management of background processes.

How to update the system:

  1. Go in Settings → System → System update.
  2. Click Check for updates.
  3. If a new version is available, install it (preferably via Wi-Fi).

For advanced users:

  • 🔧 If there are no official updates, you can install custom kernel (for example, FrancoKernel or ElementalX), optimized to save battery. Required root and experience with TWRP.
  • 📦 On Xiaomi you can switch to firmware MIUI EU (unofficial European version), where the mode is better optimized energy saving.
⚠️ Attention: Installing custom firmware and kernels will void the warranty and may lead to unstable operation of the phone. Before the procedure, make a backup copy of your data via TWRP or Google Drive.
What should you do if after the update the battery starts to drain faster?

Sometimes new firmware versions contain bugs that increase power consumption. In this case:

1. Wait for the next patch (usually released within 1-2 weeks).

2. Roll back to the previous version via Fastboot or ODIN (for Samsung).

3. Reset the settings to factory settings (Settings → System → Reset settings), but first save the data.

8. Alternative methods: from calibration to replacing the battery

If all software methods have been tried, but the phone still discharges in a few hours, it’s time to consider “hardware” solutions.

What can be done:

  • 🔄 Battery calibration: Sometimes the charge controller starts showing incorrect data (for example, 0% when real 20%). For calibration:
    1. Discharge the phone until it turns off automatically.
    2. Connect to charging and wait until 100% turn it on!).
    3. Disconnect charging, turn on the phone and wait until it discharges to 0%.
    4. Repeat the cycle 2-3 times.
  • 🔋 Battery replacement: If the capacity has dropped below 70%, and the phone is older than 2 years, replacing the battery can return the original battery life to the popular ones. models:
    • Samsung Galaxy A52: 1 500–2 500 ₽
    • Xiaomi Redmi Note 10: 1 200–2 000 ₽
    • Google Pixel 6: 3 000–4 500 ₽
  • ⚡ Power Bank with support for fast charging: If the phone is quickly discharged, but it is impossible to replace the battery (for example, in monolithic cases iPhone-like Android-smartphones), use an external battery with Power Delivery (for example, Xiaomi Mi Power Bank 3 20000mAh).

    • For owners of phones with a removable battery (for example, Samsung Galaxy XCover or old LG):

    • 🛠️ Buy second battery and carry it with you. Cost - from 800 ₽.
    • 🔄 Use charger with two slots for alternate charging.
      • 💡

      If the phone discharges by 10-15% overnight in standby mode, this is normal. If the loss of charge exceeds 20%, check background processes or battery status.

      FAQ: Answers to frequently asked questions

      ❓ Why does a new phone discharge quickly at first? days?

      In the first 3-5 days after purchase, the system indexes files, optimizes applications and calibrates the battery. This is normal - after a week, battery life will stabilize. If the problem persists, check your screen settings and background processes.

      ❓ Can you use the phone while charging?

      Yes, but this increases the charging time. and can lead to overheating. If you play games or watch videos while charging, use the original power supply and avoid covers/cases that impair heat dissipation.

      ❓ Is it true that charging to 100% harms the battery?

      Yes, but not critical. Modern charge controllers limit the voltage after 80%, so. Constantly charging to 100% reduces battery life by ~5-10% per year. For maximum service life, keep the charge in the range of 20-80%.

      ❓ Why does the battery drain faster in the cold?

      Lithium-ion batteries lose capacity at temperatures below 0°C In cold weather (-10°C and below), the phone may lose capacity. turn off even at 30% charge. To avoid this, keep the device in an internal pocket or use a heated case.

      ❓ How to check which application is draining the battery at night?

      Install the application BetterBatteryStats (required root) or GSam Battery Monitor. They show detailed consumption statistics, including Partial Wakelocks (processes that keep the phone from sleeping). Frequent culprits: Facebook, WhatsApp, Google Play Services.