Perhaps

if I clean this one and fit (assuming it’s compatible) then the B’s wipers will behave properly again! They decided not to work on the M5 this morning going down to Exeter to collect the phone. Possibly a wiper parking issue so I’ll try this switch.

Phone battery replaced for free and we’ll see how it performs. Nice Apple employee did say that sometimes they break the phone and have to give out a new one ....they didn’t break mine.....