When your vivo S50 refuses to wake up from sleep, it can feel like the phone is completely frozen. The screen stays black, taps do nothing, and even the power key may not respond right away. In most cases, this issue is caused by software hiccups, power management behavior, or display-related settings, and it can usually be fixed without a service visit.
Why Your vivo S50 Won’t Wake Up From Sleep
- The system is temporarily frozen after the screen turns off.
- Battery optimization or sleep settings are too aggressive.
- A background app is interfering with the display wake process.
- The phone entered a deep sleep state due to low battery or overheating.
- A minor software bug after a recent update in 2025.
1. Force Restart the Phone
When the screen does not wake at all, the system may be stuck in a frozen state. A force restart cuts power to the system processes and reloads everything from scratch.
Press and hold the Power key for about 15 seconds.
Release the key once the vivo logo appears on the screen.
Wait for the phone to boot up fully, then test if the screen wakes normally.
2. Check the Battery Level
If the battery is critically low, the phone may not wake even though it looks powered on. This often happens when the device enters deep sleep to protect itself.
Connect the vivo S50 to its charger, and then wait at least 10 minutes.
Press the Power key once, and then watch for the charging or lock screen.
Leave it charging longer if the battery indicator does not appear right away.
3. Disable Aggressive Battery Saving
Some power saving features can prevent the screen from waking instantly. Disabling them helps the system respond faster when you press the power key.
Open Settings, and then tap Battery.
Tap Power saving mode, and then turn it off.
Lock the phone and check if the display wakes up normally.
4. Check Double Tap and Wake Gestures
Wake gestures can stop working if they are disabled or glitched. Reenabling them refreshes the feature and restores normal screen behavior.
Open Settings, and then tap Shortcuts and accessibility.
Tap Smart motion or Wake gestures, and then enable Double tap to wake.
Turn the screen off and test the gesture again.
5. Remove Problematic Apps
Some third-party apps can interfere with screen and sleep behavior. This is common with overlay apps, screen filters, or battery optimizers.
Restart the phone, and then observe if the issue continues in normal use.
Uninstall recently installed apps, and then test the sleep and wake function again.
Focus on apps related to display, power, or system customization.
6. Update the System Software
Software bugs are a common reason phones fail to wake from sleep. Installing updates often includes fixes for display and power issues.
Open Settings, and then tap System update.
Check for updates, and then install any available version.
Restart the phone after the update completes.
A vivo S50 that will not wake up from sleep is usually dealing with a temporary system or power issue. Once the system refreshes and battery settings are adjusted, the screen should respond normally again.
FAQs
Why does my vivo S50 screen stay black but the phone is still on?
This usually happens when the system freezes while the display is off. A force restart clears the issue and restores normal screen behavior.
Can overheating cause the phone not to wake up?
Yes. If the device gets too warm, it may limit screen activity or enter deep sleep to protect internal components.
Should I reset my vivo S50 if the issue keeps happening?
If none of the fixes work and the problem happens often, a factory reset may help. Back up your data first and consider contacting vivo support if the issue continues.
