iCloud Photo Library

Kata124 Said:

"iCloud Photo Library: I’m trying to upload my iPhone photos to the photo library to free up space on my phone but it’s been stuck at 1% complete for the last day and a half. I’ve tried restarting my phone, logging out of iCloud and back in, turning iCloud Photo Library off and back on, and everything else I can think of with no progress"

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Try Clearing Space:

Many system resources may be being used by unnecessary items (hence, the slow speed). So, consider performing the following prior to using Photos...

A. Clean TV and Music Libraries:

Remove all unneeded files from your TV and Music Libraries. Full-Movies take up 2-4GB typically, and a bunch of those would take up a load of storage, ideally. So, if you have any movies that are not needed, then delete them.

Also..

B. Clear Temporary Internet Files:

Clear your Temporary Internet Files(Cookies & Cache) of Safari:

• Cookies perform remembrance of certain site-entered data.
• Cache keeps a snapshot of the last time you visited a site.
• Go Here: Clear the History and Cookies from Safari on your iPhone, iPad, or iPod Touch - Apple Support

C. Clear "Other":

Clear the storages named "Other". It basically contains unnecessary files such as caches that are used for system ease of use - all of which gather over time: How to Clear "Other" in your iPhone's Storage - Use Backup - User Tips