Improving performance on mobile devices

[eveneme]

Currently, the score is around 70 in PageSpeed Insights for mobile devices. I think there’s room for improvement in this area. Most users nowadays are practically on mobile devices. Reduce unused JavaScript and defer loading scripts until they are needed. This will help decrease the amount of data transferred over the network.

Edit:

I would like to add that I have the following options disabled:

Smart cache for CSS

Smart cache for JavaScript

Apache optimization

With these settings disabled, the result is actually better — I get a score of 80 instead of 70.
Shouldn't it be better with these options enabled rather than worse?