Why you need a flight mode and how it works on Xiaomi
Flight mode (or “air mode”) is one of the most mysterious features of modern smartphones. Xiaomi Redmi users often turn it on intuitively, without realizing what processes are running “under the hood” of the device. In fact, this mode does not just turn off communication — it radically changes the operation of radio modules, power consumption and even some system services.
If you've ever wondered why your battery runs slower on an airplane or how to quickly reboot your smartphone without a power button, the answer lies in flight mode. But there's a downside: improper use can lead to loss of important notifications, app crashes, or even problems connecting to mobile networks after shutdown. In this article, we'll look at what exactly happens to your Redmi when you activate air mode, what hidden opportunities it opens up, and when it can be harmful.
What is turned off in the phone when the flight mode is activated
The main objective of the flight mode is to completely disable all wireless modules that can interfere with the aircraft’s onboard equipment. On Xiaomi Redmi smartphones (including models from Redmi Note 12 to Redmi 10A), this affects:
- 📶 Mobile communications (2G/3G/4G/5G) — phone stops registering in the operator’s network, the signal level indicator disappears.
- 📶 Wi-Fi – the module deactivates even if you were connected to the network. Exception: manually turn on Wi-Fi in the flight mode settings (available on the flight mode). MIUI 12+).
- 📡 Bluetooth – disconnects communication with headphones, smart watches, car systems.
- 📍 GPS/GLONASS – the geolocation module stops working, but only if it depends on mobile data (A-GPS). Autonomous GPS may remain active.
- 📞 NFC — On models with contactless payment support (for example, Redmi Note 11 Pro)+) module off.
It is important to understand that flight mode does not block the processor, memory or camera — the phone remains fully functional for offline tasks: gaming, watching videos, working with documents.
⚠️ Note: On Xiaomi smartphones with two SIM-cards (Dual) SIM) The flight mode shuts down both networks at the same time. There's no way to keep only one active. SIM, As in some Samsung models.
Battery impact: Does the phone run slower?
One of the most popular myths is that flight mode magically saves charge, and in fact, the effect depends on the model of the smartphone and the current usage conditions.
- ⚡ Battery benefits: Disable radio modules that normally scan the network (especially in low signal conditions). 15-20% charge-by-charge 8 Background updates to Internet-related applications (weather, mail, social media) are stopped).
- ⚠️ When there are no savings: If you use your phone for games or videos, the processor and screen remain the main energy eaters. AMOLED-screens (e.g. Redmi) K50) Black background in flight mode can reduce the cost a little, but the effect is minimal.
| Xiaomi Redmi Model | Saving charge in flight mode (in 8 hours) | Test conditions |
|---|---|---|
| Redmi Note 12 Pro+ | ~18% | Screen off, background processes minimized |
| Redmi 10C | ~22% | Screen off, weak network signal before switching on |
| Redmi K60 | ~12% | Active use (games, videos) |
| Redmi 9A | ~25% | Screen off, budget processor |
Interesting fact: on some MIUI firmware (e.g. MIUI 14), the flight mode forcibly disables battery optimization for some system processes, which can lead to a paradoxical situation where the charge is spent faster than in normal mode with Wi-Fi enabled. To avoid this, it is recommended to manually close all background applications before activating the air mode.
💡
If you want to maximize your phone’s life, combine flight mode with power saving in your battery settings to turn off the background activity of your apps and reduce the processor frequency.
Hidden Flight Mode Capabilities: 5 Unobvious Chips
Few people know, but the air mode on Xiaomi Redmi can be used not only for its intended purpose.
- Fast reboot without a power button. If your smartphone is frozen and the Power button is not working, turn on flight mode, wait 10 seconds, then turn it off. This will reset connections and often solves problems with the "hang" interface.
- Accelerated charging. When the flight mode is on, the phone charges to 10-15% It's faster because it doesn't waste energy on communication, and it's useful if you need to reconnect. 20-30% charge.
- Offline application testing: Developers and testers use air mode to test how an application behaves without the Internet, such as detecting caching errors in Google Maps or Yandex.Maps.
- Block spam calls. If you're fed up with intrusive call centers, turn on flight mode for 10-15 minutes. Most auto dialers are reset if the caller is unavailable during that time.
- Reset network settings in a soft way. If mobile Internet is unstable, try turning on and off air mode. This will reset the current network settings without completely resetting (Settings) → SIM-maps and mobile networks → Resetting network settings).
How to turn on Wi-Fi in flight mode on MIUI 14?
What to do if the Internet or communication is not working after the flight mode
One of the most common problems is when, after the flight mode is turned off, the phone does not catch the network or connect to the mobile Internet, and this can happen for several reasons:
- 🔄 The failure of registration in the operator's network is especially important for Redmi with two SIM-maps where one of them can "hang" in search mode.
- 📡 Conflict with settings APN. If you recently changed the settings of the access point, they could reset.
- 🔋 Energy saving on some firmware MIUI Aggressive battery optimization blocks radio modules after leaving flight mode.
Here is a step-by-step instruction for restoring communication:
Reboot your phone (hold Power + Volume Up for 10 seconds)
Check if Automatic Network Selection is enabled in Settings → SIM-maps and mobile networks
Remove and add again APN-mobile-internet profile
Turn off the energy saving for SIM-card in battery settings
Reset network settings (Settings) → System system → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth)-->
If the problem is repeated regularly, it may indicate a hardware defect (such as damage to the antenna module) or a software failure after the MIUI update.
- Update the firmware to the latest version via Settings → About phone → System update.
- Reset to factory settings (pre-save data!).
- Contact the service center if the failure manifests itself after physical damage (fall, moisture).
⚠️ Note: On Xiaomi Redmi models with VoLTE support (voice via voice) 4G) After leaving the flight mode, it may take up to 5 minutes to re-register on the network, during which time calls will not be available, even if the signal indicator appears.
Flight mode and safety: can you be tracked?
Many users mistakenly believe that turning on air mode makes the phone "invisible" for tracking, but it's actually more difficult:
- 🕵️ What turns off: Mobile operators stop seeing your location through towers (but retain data about the last connection). apps lose access to geolocation if it relied on mobile data or Wi-Fi.
- 🔍 What's left: GPS-The module can continue to work if it is not manually disabled, which means that applications with local access (for example, Google Maps offline) can still determine the coordinates. MAC-The address will become visible to the router (and potentially to attackers on the same network). MIUI Some system services (such as Mi Cloud) can store activity logs even offline and sync them when you next connect.
It's not enough to be completely anonymous to just turn on the flight mode.
- Turn off GPS in location settings (Settings → Privacy → Location).
- Get out. SIM-Card (if you are afraid of being tracked through IMSI-catcher).
- Use specialized applications to block background activity (e.g., NetGuard or AFWall+).
💡
Flight mode doesn't make your Xiaomi Redmi completely "invisible." Real privacy requires a combination of shutdown GPS, removal SIM-maps and tools like VPN (when connected to Wi-Fi).
How to turn on and off the flight mode on Xiaomi Redmi
It would seem that it could be easier than clicking on the badge of the plane in the curtain of notifications? However, even here there are nuances that will help to avoid problems:
- ✅ Right: Enable flight mode in advance if you know you won't need communication (e.g. before a flight or an important meeting). MIUI 13+ You can configure automatic activation of air mode on schedule through Settings → Special facilities → Automation: Close Internet-dependent applications (such as WhatsApp or Telegram) before activating to avoid synchronization errors.
- ❌ Wrong: Turning on flight mode while downloading files will interrupt the process and can damage data. Using air mode as a "fast reboot" on models with a broken power button can exacerbate hardware problems. Leaving flight mode on for a few days can cause you to lose your network settings (especially on Redmi with two). SIM-map).
If you need to temporarily disconnect your connection but keep Wi-Fi access (such as on the subway), do the following:
- Turn on flight mode.
- Deploy the notification panel and hold the Wi-Fi icon.
- In the menu that opens, turn on Wi-Fi - it will work in parallel with the air mode.
On some MIUI firmware, this trick doesn't work well. If Wi-Fi shuts down on its own, try:
Settings → Connections and Sharing → Wi-Fi → Additional → Enable Wi-Fi in Flight Mode