1.Speed it up
Always remember, your users have gone all the way to the PlayStore or AppStore and have downloaded your App primarily because they think it will load faster than a desktop or mobile website. Use caching wherever possible so that data can be retrieved faster locally. Avoid using high resolution and heavy images/videos. If for some reason, the data isn’t loading fast (bad connectivity, slow data retrieval, etc.), tell the user that there is a problem and that you’re fixing it. It will not only keep the user engaged but also buy you some time.