"I would however be interested to know what is causing this problem and how it gets fixed."
Me too Martin, esp cos this is not the first time that this snag has cropped up in relation to dumbphones.
Not that it affects me directly. I use 'a phone' for phoning and SMS 😁, just occasionally for GPS mapping and navigating. Otherwise; if I'm out and about I don't want to be plagued with emails and bombarded with ads.
Yeah yeah, I know, you can do this and that to prevent or limit such things. Or can you!?
But I don't need it. When I get a new dumbphone I give it a lobotomy; dump or disable all the Apps which constantly want to 'phone home' and flatten my battery and waste memory.
Cheers All, more power to your thumbs😉