Android has its Google Drive and iPhone has its camera roll on the iCloud (or stream or however they are calling it now) and you can sync both into your apple/google account. I am using neither. Here is how I keep my photos backed up, seconds after I take them.
I am an avid Dropbox user and I am using one great feature called Camera Upload.
Dropbox has a not so hidden*** feature that will let you have dropbox upload anything you shoot (photo or video) to a Camera Uploads dropbox folder. This means that if the phone dies, you still have the photos on dropbox. It also means that if the police for example takes your phone, the photos are safe somewhere on the cloud.****
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.