If you are experiencing this problem, I would highly recommend letting the backup and install run during a time you will not be using the phone for several hours, ideally overnight.
Just start the i Phone OS 4.0 install and backup process and let it run while you sleep, you will wake up to the new OS4 being installed and you will have made a recent backup, which will speed up future backups and installations as well.
But, unfortunately, the consumer level, a phone that will not turn on properly boot up is pretty worthless.
You may be experiencing this problem if you’re phone does not turn on, or starts and then shuts off.
If you have a large camera roll on your i Phone, you might be really slowing down your i Phone backups.
This is because the i Phone backup process will copy all your pictures regardless of whether or not there have been any changes made to them. Regularly backup your i Phone photo’s and then delete the originals from the i Phone. It is no coincidence that this tip is recommended by Apple Support, because it works.
Before Android there was no operating system on the cell phone market that could compete with the flexibility between calls, text and data/online usage that i Phone provided.There are several reasons why backups can take forever on an i Phone, so here are a few tips you can try that should increase the speed of your i Phone backups and restores.Yes, these tips work on Mac OS and Windows, and for i Pod Touch too.I have noticed a direct correlation between the length of time a backup takes to complete and how often I perform full backups: the longer time that passes between backups the slower the backup will be.Many users are reporting very slow backup and install processes for updating their i Phone and i Pod touch to i Phone OS 4.