Hi, here's an update of progress to date.
I brought a brand new, El Cheapo, android phone with android 14 go version on it. Google app store said not compatible with phone. Unpacked phone from Amazon 17:00 hrs, repacked and back at carrier, 19:00.
Visited brother in law, who's an iPhone fan, down loaded update in 5 minutes. Latest software release installed.
Had breakfast with mates this morning one of which has an iPhone SE 2020. Set up Rosetta in carpark and hey presto, 4 greens.
Went to phone shop, brought iPhone SE 2020 for £90, and 4 greens
Moral of story, buy a cheap iPhone to use purely as data link.