I use iCloud to back up my iPhone, including my photos and videos, but I have also starting using Google Photos.  I used Picasa when it was active, so I have some Google Photos already, and I used to have an Android (RIP, my HTC) so I have a lot of Google Photos from those days.

After installing the Google Photos app, I went into settings (the three lines on the top left) and choose Back up & sync.  

I made sure my photos were set to auto-backup at the free storage quality.  Google started saving my photos, and whenever I check it, I see a nice collection of my recent photos and screenshots.  I don't know how the photos will print, but I back up my photos at full-size to my computer and this Google Photos option is free.  We all know that free is good.
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There is a setting called "Free Up Space", which will remove photos that have been backed up.  I plan to use this when I am low on phone storage, which  happens frequently.     I am leaving the "Limit cache size" option off, because I like seeing the little thumbnails, but for someone who had a lot of photo storage space issues, limiting the cache might be a good options.

Google's second answer to Facetime has arrived in the form of Google Duo.  I love Facetime, like Google Hangouts and hate Skype, so Google Duo is interesting to me.  Google detailed the new video chat tool on the Google Blog.

One nice option that caught my attention is the Knock Knock feature. "Knock Knock which lets you see live video of your caller before you answer, giving you a sense of what they’re up to and why they want to chat. Knock Knock makes video calling more spontaneous and welcoming, helping you connect with the person before you even pick up."

I haven't used it yet, and although I appreciate Google's dig at Apple ("You shouldn’t have to worry about whether your call will connect, or if your friend is using the same type of device as you are. "), I traded in my Android for an iPhone because feature-rich and unreliable isn't useful as feature-moderate and reliable.  I am excited to try Google Duo, though, and I will report back when I use it.