When using Epicollect5 on a tablet or on phones with a really high screen resolution, you might find the font size to be a little too small and therefore difficult to read. It is very easy to adjust the font size to your likings:
From the home screen (your list of projects), tap on the menu button at the top left to open the drawer menu.
From the drawer menu options, tap on "Settings".
On the settings screen, drag the slider to the right to increase the font size or to the left to decrease it.
Tap on the save button at the top right to confirm your changes.
The font size and the whole UI get bigger/smaller as desidered. Tap on the back button to exit the settings screen.