Whatsapp not working when phone is locked when phone was on battery saver mode

[Android Central Question]

My battery percentage is below 30% yesterday (15%), when I stopped using phone and locked phone.
After 1hr when my girl friend called and texted me on WhatsApp, it's showing I am offline( that she not got even getting double ticks when she sent message)
Why this WhatsApp getting stopped again again? When I don't use phone
???
Help me
This situation making worse our relation
My device: OnePlus nord
Please ans me

 

[mustang7757]

When phone is at 15% it's probably in battery save mode and with screen off it turns WiFi and data to conserve power , see if it happens at 30 %?

I'll leave a Link to register so you can communicate here , As a guest account you can only post questions but can't reply.
https://forums.androidcentral.com/showthread.php?t=409154

 

[B. Diddy]

Welcome to Android Central! It would not be unusual for certain power-saving modes to prevent certain apps from working in the background, as a way to save power.