Does your WiFi disconnect as soon as your phone is locked?
This usually happens because your phone is trying to save battery by limiting background activity.
The good news is—you can fix it quickly with the right settings.
Why WiFi Disconnects When Phone Is Locked
When your screen turns off, your phone may reduce network activity to conserve power.
This can cause WiFi to disconnect automatically.
Common causes include:
- Battery saver or low power mode
- WiFi sleep policy settings
- Background data restrictions
- System optimization features
Quick Fixes to Try First
1. Disable Battery Saver Mode
Power-saving features often disable WiFi in the background.
👉 Turn it off and check if the issue is resolved.
2. Keep WiFi On During Sleep (Android)
Go to:
Settings → WiFi → Advanced → Keep WiFi on during sleep → Always
3. Disable Low Power Mode (iPhone)
Go to:
Settings → Battery → Low Power Mode → Off
4. Allow Background Data
Make sure your system apps are allowed to use network data in the background.
Advanced Fixes
5. Reset Network Settings
This clears hidden configuration issues.
6. Update Your System
Software bugs can affect WiFi behavior.
Related Issues You Should Check
If WiFi disconnects not only when locked but also randomly or by itself, you may be dealing with a broader issue.
👉 For a complete overview, read this guide:
→ https://todayselectlab.com/wifi-keeps-disconnecting-on-phone-fix-guide/
👉 If your WiFi drops randomly without a pattern, check this fix:
→ https://todayselectlab.com/wifi-drops-randomly-on-phone-fix-guide/
👉 If WiFi turns off automatically instead of just disconnecting, see this solution:
→ https://todayselectlab.com/wifi-turns-off-automatically-on-phone-fix-guide/
Final Thoughts
WiFi disconnecting when your phone is locked is usually caused by power-saving settings—not hardware issues.
Once you adjust the right settings, your WiFi should stay connected even when your screen is off.