Recently we had a customer who was having issues with her phone and the only potential resolution was to restore the device to factory settings. With over two years of pictures on the phone she didn’t want to do that as ALL the pictures would be deleted and they were not backed up.
Make sure the pictures on your iPad/iPhone are properly backed up. When you're connected to your Mac or PC, open up iTunes and right-click on your icon in the Devices list and select Backup. You don't need to worry about Apps you've downloaded or any purchases as they're always available to you from Apple. Content you've created, such as photos and videos is what's important and at risk of loss.
You can also use Apples’ iCloud or another online service. The least expensive cloud service we’ve found is Backblaze.