If my iphone screen turns off, does Joplin keep syncing?

Operating system

iOS

Joplin version

13.4.4

Sync target

Dropbox

What issue do you have?

I'm always curious. If Joplin stops syncing after my iphone turns off the screen, which setting can I change to make Joplin keep syncing? Joplin on my iphone takes forever to sync (admittedly this is the first time I sync after installing on iphone).

It appears Joplin cannot sync when the screen is locked. I solved this by setting screen auto lock to 5 min (the longest in my settings) and turning the phone back on when it dims and finally it finished. Subsequent sync should take less time.