Lost photos and presets

[#1]

I had a systematic error on my Iphone which meant we had to restart it as a new Iphone and redownload all of my apps. But when we did this, my Lightroom has lost all 3,000 + photos I own and my presets, are there anyway that I can restore this. Please help because they were for work. 

[#2]

I don't use a cell phone for anything important, but even my UN-important photos are important to me... so I never have photos in just one place, I always copy photos to another device... I have also had a cell phone malfunction, but my photos weren't lost, since I had made a backup copy

[#3]

I think I see some info that might help.  I will send you a direct message to share said info privately.