Bedtime Monday night I put my iPhoneXS on charge, unplugged it the next morning. Normally I would not expect to have to put it on charge again for at least two days (my usage is very light). Very surprised this morning (Wed) to see it was down to 16%. Recharged it and whilst doing so looked in Settings / Battery at the battery level and activity graphs. The activity graph showed light blue bars at max height, with dark blue bars just showing at the bottom. Looking at the 'last 10 day' graph, it was only since Monday that these chart-topping light blue bars appeared. Have no recollection of doing anything unusual with the phone activity-wise over this period. Has it been hijacked?!
Anyone any ideas?
Graphs of activity:-
