Let’s see where it goes. Many don’t want to contribute to #Mapillary since they were bought by facebook.
But as #maproulette directly contributes to #openstreetmap, I can’t see a problem here.
I have a Samsung Galaxy S21 FE which has a lange screen and battery (it works fine for me, only charging to 85%). I have a bulkier spigen case on it, and have dropped it several times yet, no damage.
I have been thinking about buying an S23 Ultra or a Galaxy fold, but I would just risk to destroy more money.
If I would buy an additional device it would be a used 10" tablet for mapping.
Also an interesting approach would be a #NexDock which I never tried, but might even work like a tablet but as screen and input device for my existing phone, which would make switching during mapping more easy.
At the moment I only do #StreetComplete on the go, and maybe #mapcomplete while sitting in a restaurant for example.
I am using Joplin on Syncthing with 3 devices I have edited one note on both devices before syncing, so the note got duplicated. (Joplin is syncing to a folder, then the folder gets synced). This takes a little longer to get synced if I boot and open Joplin directly (as Joplin’s first sync still syncs the outdated files). But mostly works fine.
I am also using Joplin on 2 devices and sync them over WebDav (on NextCloud). As I am editing 99% on one device only, I cannot tell you much about it.
If you are working offline some time I would try syncthing first. I have set my phone to auto usb tether so it would always sync when connected.
You should post your phone, the cable and the charger (specs) Also the soc at the beginning of the charging process.