We have spent many hours trying to solve this problem. Any help will be highly appreciated! We have built the application using Angular. The desktop page speed score is around 74 but the mobile is around 23. Can someone please help?
Performance Optimization for Angular based mobile app:
https://walkingtree.tech/performance-optimization-angular-based-mobile-app/ and https://medium.com/swlh/angular-performance-optimization-techniques-5b7ca0808f8b
Both links will provide you with different optimization techniques that will drastically improve your application speed.