I have over 7,000 photos on my cellphone and running out of space. So, I decided to buy a 2-terabyte portable drive (Called My Passport) to copy everything for storage. It's important to keep many of these photos on the phone and Friday was a good example. I was invited to meet with a client doing a walk-thru with the house inspector and other trades. Her designer showed up asking questions about custom work and seconds later, I pulled up photos of a previous project that had exactly what she was describing.
While it will take a few hours to purge photos not needed (birthday parties and video notes) and to put the important ones in separate folders so I can find them quickly. I often use the time to do that in waiting rooms. A few minutes each week doing maintenance.
When I'm out on appointments, I'll often shoot 20-30 photos of a job then upload them to my computer when I'm back in the office. My associate uses Google Drive and does her uploading live... Thanks, but no thanks, I'll keep the photos on the phone.
I've got a tablet connected to the corporate things on Google, I prefer the separation of not having corporate email on my phone.
Should my phone or the SD memory in it malfunction, I'm not far from an archival copy on My Passport.