O2

How long do O2 roll over data?

Hi does anyone think O2 should give data to retired people to keep in touch with families while in isolation?

hi why does my micrsoft lumas 435 gives me a calander further than a year in the future AND TWO WEEKS IN THE PAST.so i have no record of my history e.i.birthdays.work related,also births,deaths.and marriages. emmitt

battery lose over night from 100% to 9% happened on may 23rd and the same no june 23ed and27th also lostcalander data history from june the 10th .[all work and inportante dates lost] june the 10th went last night.[i think it might be microsoft.]