I have both phones (Xperia 10III and C2) as daily use, one in the left the other in the right pocket of my trousers. I have several SIM cards from multiple countries…need always at least two phones.
I must say that I like to more and more take out the C2. It had a lot of software issues with the first versions of SFOS 5 but the current one 5.0.0.43 is relatively well working. The huge size, missing fingerprint reader and no notification LED are clear hardware drawbacks…but that’s mostly the case with all Samsung’s and Apple’s as well…unfortunately that’s where the industry was heading.
Anyway, both phones (C2 vs. 10III) have pros and cons but I’m sure that C2 will get better with every new SFOS release.
What I like in particular is that the battery life (not good in 10III even with all optimizations) and useability of the camera (except for video recording…here I use an Android app for now) is a lot better in C2. Regarding Android app support, I know there is still something to work on the C2 but I cannot complain about those apps I use. Also my banking app works in principle even though microG and signature spoofing isn’t working as expected. I can live with it for now. Generally I would go for the C2 even a second time - just order it! Hopefully they’ll have screen protectors and silicon cases again as well!!!