When tapping "Backup Now" in Settings > iCloud, how long is "estimating time remaining" supposed to show for? I sat there for well over 10 minutes, waiting to see how long it would take, whilst "estimating time remaining" didn't change and the blue marker didn't progress any further forward. So I cancelled the backup as I thought maybe it was stuck as it's not taken that long before. I did a reset just in case it might help, but it made no difference. Can "estimating time remaining", never mind a backup after estimation, take a very long time? If it can take an age, why so long to estimate time remaining?