I have actually never flown on a narrow body plane that had charging ports, so I wouldnt say “most flights”

Mine has always been super snappy, so something’s definately off I’d say.

Same phone, but using LineageOS for microg!

https://purelymail.com/

I think it depends heavily on how much storage you’re allocating, if you allow uploading media that is. From what I’ve understood most of the bottlenecks are in DB operations so CPU and memory definately play a role.