Shopping time yesterday afternoon so I went to move the big red beast for the first time in a fortnight(ish) and noticed the phone holder stuck to the right hand bottom corner of the screen was dangling a bit wrong. After an exploratory poke, must work on my self control, it dangled down a whole lot more with great strings of transparent sticky plastic gloop running back to the screen.
Post shopping investigation showed the transparent plastic under the rubber suction thingy had melted. It also showed that removal in the heat of the afternoon wasn't going to happen. The stuff seemed to have approaching infinite stretchability with a Poisson Ratio nearly as high and that (gremlin decreed) perfect level of tackiness that won't actually stick and stay put as you try to work with it but leaves a near impossible to remove layer of tack gunk on your hands and tools. Think old, hot, cheap insulation tape adhesive remnants. Cubed.
In the cool of the morning it was a bit better mannered and scraped off the screen leaving a small deposit that succumbed to cellulose thinners.
Best scrapers I've found for all sorts of things when you don't want to damage the underlying substrate are the something plastic ones my master baker grandfather used to use to clean out his mixing tins and bowls. Flour makers freebies, logos long gone. Prefect combination of flex and stiff without scratchy sharp edges that is seemingly unobtanium today. Probably not made since 1950 something and I'm down to my last two. If I recall correctly he was muttering about not being able tor replace them when he taught me how to hand make bread, properly, round about 1960. Standing on a stool to reach the bowl. Wish I'd paid more attention.
I guess the moral is "don't leave things stuck to the screen." Now I have to find another which may be hard as that one was a freebie and rather better in practice than the paid for ones. Wouldn't really matter except I've gotten used to Waze!