Does auto WhatsApp work when phone is locked? This is one of the most common concerns for businesses using post-call automation. The answer is YES – WappBlaster is designed to work reliably even when your screen is off or phone is locked. Here's how.
The Short Answer: Yes!
WappBlaster works in all these scenarios:
- ✅ Phone screen is off
- ✅ Phone is locked
- ✅ Phone is in your pocket
- ✅ App is in background
- ✅ Phone is offline (messages queued)
How Does It Work When Phone is Locked?
Background Service
WappBlaster runs as a background service that stays active even when your phone is locked. It continuously monitors for call events.
Call Detection
When a call ends, the Android system notifies WappBlaster regardless of screen state. The call event is captured instantly.
Temporary Wake
WappBlaster temporarily wakes the screen (for a brief moment) to interact with WhatsApp and send the message.
Message Sent
The message is sent through WhatsApp and the screen returns to locked state. All within seconds!
What If Phone is Offline?
Even without internet connection:
- 📱 Calls are still detected
- 💾 Messages are queued in local storage
- 🔄 Auto-retry when internet reconnects
- ✅ Zero messages lost – guaranteed delivery
Settings Required for Lock Screen Operation
To ensure auto WhatsApp works when phone is locked, configure these settings:
🔋 Battery Optimization
Disable for WappBlaster – prevents Android from killing the app
♿ Accessibility Service
Keep enabled – required to interact with WhatsApp
🔔 Notification Access
Grant permission – helps app stay alive
🔐 Lock App in Recents
Swipe down on app card to lock it
Device-Specific Tips
Samsung
- Add WappBlaster to "Never sleeping apps"
- Disable "Adaptive battery"
Xiaomi/Redmi/POCO
- Enable "Autostart" for WappBlaster
- Set battery saver to "No restrictions"
- Lock app in recent apps
OnePlus
- Disable battery optimization
- Lock app from recent apps
Realme/Oppo/Vivo
- Enable "High power consumption" in battery settings
- Add to "Allow auto launch"
How to Test Lock Screen Operation
- Enable WappBlaster and lock your phone
- Call yourself from another phone
- Answer and then hang up
- Check the other phone – WhatsApp message should arrive!
Conclusion: Reliable 24/7 Operation
WappBlaster is designed for real-world business use where your phone may be locked, in your pocket, or charging. Auto WhatsApp works when phone is locked – every call gets a follow-up, guaranteed.
👉 Try it free for 3 days and test the reliability yourself!
Frequently Asked Questions
Does auto WhatsApp work when phone is locked?
What settings are needed for lock screen operation?
Will messages be sent if my phone is offline?
Why isn't it working on my Xiaomi phone?
How can I test if it works when phone is locked?
WappBlaster Team
Technical Support
WappBlaster technical team ensures 99.9% reliability for post-call WhatsApp automation, even when your phone is locked or offline.