iPhone 7 safari 13.2.3 webVew=true
Video : view top battery indicator
If you run app with MD theme, there is a system bug in it https://github.com/framework7io/framework7/issues/2952
If you run app with iOS theme then it could be something in your custom code that causes high CPU load (like infinite animations)
thank you ! it helped a lot and solved the problem. great hit