Your POCO F6 was running fine, and now its 6.67-inch AMOLED display stays stubbornly black, with no home screen, maybe no response to taps, and no easy way to tell whether the phone is off, frozen, or simply out of charge. Because the F6 is a standard Xiaomi HyperOS phone with a physical Power button, Volume buttons, and an in-screen fingerprint reader, almost every black-screen case can be worked through with the buttons you already have, no computer required.
Work the fixes below in order. The first few are quick, safe, and keep all your data intact, while the last on-device options erase the phone and the final step hands it to a service center. Most black screens are a software hang or a drained 5000mAh battery, so start at the top before you reach for anything drastic.
Hold the Power Button for a Forced Restart
A black or frozen screen is most often cleared by forcing the phone to reboot. The official instruction is simple: "Press the power button for more than 10 seconds for force restart" (also phrased as "long press the power button above 10s forced to restart").
Keep the Power button held down past the 10-second mark and do not let go early, even if nothing happens at first. Release it once the phone vibrates or the POCO logo appears. This does not delete any of your data, which is why it belongs first on the list.
Charge the F6 and Watch the Red LED Indicator
If the phone will not react at all, the 5000mAh battery may simply be too low to light the screen. Plug in the original 90W in-box charger with its cable and give it time before judging the result.
The official guidance is to "try to restart after charging for 15-30 minutes with the original charger or charging with weak current (such as charging with the computer USB interface). If the power is too low, the screen may not be bright when the charger is just inserted, but the LED Indicator will flash red." A flashing red LED is a good sign; it means the phone is alive and charging even though the display is dark.
The LED also tells you what kind of problem you have. If the light comes on, do a forced restart by holding Power for more than 10 seconds; a phone that boots from there was dealing with a software glitch rather than dead hardware. If there is no light at all and no response after holding Power for 10 or more seconds, treat it as a phone that cannot turn on and move on to Recovery mode or a service center. (Note: the F6 has no wireless charging, so use the wired charger and cable only.)
Black Screen Only During Calls Points to the Proximity Sensor
If the screen goes black only when you start or answer a call, and lights up normally otherwise, this is usually the proximity sensor doing its job a little too well rather than a fault. The sensor blanks the display so your cheek does not press buttons, and dust or a thick screen film can confuse it.
The official advice is to wipe the top area of the phone around the sensor and remove any non-official screen protector that may be covering it. If calls still go dark, enter hardware detection (CIT mode) by dialing *#*#6484#*#* or *#*#64663#*#*, select "proximity sensor," and run the calibration.
A Screen That Says FASTBOOT Needs One More Restart
If the display is not fully black but shows a "FASTBOOT" screen, a button was held down during boot. This screen appears when you "press and hold the Power button and the Volume Down button at the same time," which is easy to do by accident in a pocket or while charging.
According to the official guidance, if you reached it by mistake, "leave the phone alone for a while and it will automatically turn on." If it does not, "try pressing the power button for more than 10 seconds for a force restart" to drop out of Fastboot and boot normally. No data is lost in either case.
Update Xiaomi HyperOS to Clear a Crash Loop
Once the phone boots far enough to use it, installing the latest software can fix a crash or restart loop that keeps dumping you to a black screen. Software updates frequently address exactly these stability bugs.
Follow this path:
- 1.Go to Settings.
- 2.Select About phone.
- 3.Tap Xiaomi HyperOS.
- 4.Tap Check for updates and let the phone search for the latest version.
Keep the phone on stable Wi-Fi with enough battery charge, and do not interrupt the install once it begins. Let it finish and reboot on its own.
Reboot From Recovery Mode When Nothing Loads
If the phone stays black with the power off and a plain force-restart does nothing, you can try to reach Recovery mode and reboot from there. This still does not erase anything; it is just another way to kick the phone back to life.
The official instruction is to "long hold the volume + button and power button while the phone power off to see if the phone can enter the Recovery mode. In that mode, press the power button for more than 10 seconds to restart the phone." In other words, hold Volume Up and Power together until the recovery menu appears, then hold Power for 10 or more seconds to restart.
Factory Reset From Settings (This Erases Everything)
If the F6 boots to the home screen but keeps dropping to a black screen, a factory reset clears stubborn software faults. This step erases the phone, so back up first.
The official warning is direct: "Performing a factory reset will erase all data on your phone. Make sure to back up any important data before proceeding." When you are ready, use this path:
- 1.Go to Settings on your phone.
- 2.Select About phone.
- 3.Tap Factory reset.
- 4.Tap Erase all data.
- 5.Select Back up or not as your preference, then perform Factory reset.
Wipe Data Through Recovery as a Last On-Device Resort
When the phone will not boot far enough to open Settings, you can wipe it from Recovery mode instead. This also erases everything, so only use it if the safer steps above have failed and you understand the data will be gone. The official warning still applies, because once confirmed, all data on the phone will be erased, so back up important data in advance if you possibly can.
The official Recovery steps are:
- 1.Press and hold the Power button, and slide your finger from the middle to [Power off] to turn off the phone.
- 2.Press and hold the Volume up button and the Power button at the same time for a while.
- 3.Press the Volume down button to select [Wipe Data], then press the Power button to confirm.
- 4.Press the Volume down button to select [Wipe All Data], then press the Power button to confirm.
If the phone cannot be turned off normally, hold Volume Up and Power together from the off state to reach the same menu. The general phrasing for this in the support material is to enter Recovery mode and select "Clear data," then "Clear all data."
When to Hand the F6 to an Authorized Service Center
If the screen is still black after everything above, it is time for professional inspection. The official guidance is to bring the phone, the original power adapter, and the original data cable to a Xiaomi or POCO authorized after-sales (service) center.
This matters most in the situation the official guidance calls out directly. If "the original power adapter (charger) is plugged in and the phone is hot without any reaction," unplug the charger first, then take it in for inspection. You can find your nearest center and arrange service through the official Xiaomi or POCO support channels.
Frequently Asked Questions
Will a forced restart delete my data?
No. Holding the Power button for more than 10 seconds to force a restart does not erase anything; it only reboots the phone. Only the factory reset and the Recovery "Wipe All Data" steps erase your data, and each carries an official warning to back up first.
How long should I hold the Power button?
For a forced restart, hold it for "more than 10 seconds." Keep holding past the 10-second mark, do not tap and release, and let go only when the phone vibrates or the logo appears.
My POCO F6 screen only goes black during calls. Is it broken?
Usually not. That behavior is the proximity sensor blanking the display. Wipe the area around the sensor at the top of the phone, remove any non-official screen protector that covers it, then dial *#*#6484#*#* or *#*#64663#*#*, select "proximity sensor," and run calibration.
Can I use wireless charging to bring it back to life?
No. The POCO F6 spec sheet lists only 90W wired turbo charging with an in-box 90W adapter and no wireless charging. To revive a drained phone, use the original wired charger and cable, wait 15 to 30 minutes, and then try a forced restart.
What if it is stuck on the POCO logo instead of fully black?
Treat it like a phone that will not boot. Try the Recovery-mode reboot by holding Volume Up and Power, then holding Power for 10 or more seconds, and if it still will not start, take it with the original adapter and cable to an authorized service center.