Why are you using Brasso??
Honestly just buy the Megs headlight restoration kit from Halfords and you can't go wrong. It includes "PlastX" polish/cleaner which is the proper stuff to be used on plastics (not Brasso!).
At least nobody else was hurt. The way that guy was driving he could have wiped out a family or some other innocents on the road so easily.
Shame he didn't keep it to competitions or on circuits because he definitely had some drifting skills.
Why not just buy some hard foam, cut it to the size of the armrest so that it fits snuggly, ...then cut out the shape of your phone for it to rest in doing the same for the plug, wiring & anything else you want to fit in there, ;)
Isopropanol would get rid of that I'm sure or cleaning it with nail polish remover (acetone) as Bob suggested.
Honestly though I think you're mad.
Those stickers look rubbish at the best of times, ...I could understand you wanting it to be all original if it was a nice 1960's Mk1 Escort or...
Have you tried mjr901 on here?
He was very helpful to me and should be able to give you part numbers I'd have thought, ...just send him a message to see if he can help. ;)
That's the problem with a crashed/damaged car that get's repair, ...imo it will never look as good as it did new (undamaged). They're always going to be signs that it's had paint or a repair done.
Usually though it's done well enough that only a trained eye will notice or if you know...
I'm sorry but I disagree that common sense has anything to do with it unless the owner had left them in plain site, ....you should be able to leave items in your car hidden from view without worrying about scum bags breaking into your car.
I'm sure we've all left things of value unattended in...