I am trying to backup my phone since yesterday to iCloud. It has 128gb almost full but I can’t seem to get it backed up. It shows about 9-10 hours left and I kept it in all night plugged. Then in morning it still showed 7 hours to go. Then if I leave the house the backup cancels and need to start all over again....does it suppose to take that long? Unfortunately I can’t use iTunes since my computer storage almost full.