As covered elsewhere in the thread; whether you need two devices or not is very device specific…
My iPhone 8 - ok - can act as hotspot while simultaneously connecting to pilotaware WiFi - 1 device ok
My friends iPhone 11 - ok - can act as a hotspot and connect to WiFi simultaneously
My iPhone 13 - not ok - cannot act as a hotspot and simultaneously connect to WiFi - 2 devices needed minimum
My iPad mini 2 - not ok - cannot act as a hotspot and simultaneously connect to WiFi
It then also depends on how many screens you want to drive…
In order to have SkyDemon on my ipad and pilotaware radar on my phone, I am going to have to carry 3 devices when flying, use the old iPhone as paw radar, ipad as SkyDemon, connect those to paw by WiFi, and have my current phone on 4g acting as hotspot… If only iPad mini 2 could split screen… …
Detail added in case useful to the paw team!