Upload Photos From iPhone
It's pretty straightforward, but there are some steps you may need to take first. If you don't have the G Drive App on your iPhone, get it from your App Store - you might also want to read about Mobile Apps.
To upload photos, open your Photo App, find the first photo you want to upload, and touch the Upload icon at left bottom:
If you have multiple photos to upload, select them in the top pane - selected photos have a blue tick mark.
If you see the G Drive Icon as one of the options, skip the next couple of steps. Otherwise, you'll need to allow uploading to G Drive. Most people will have several sharing options enabled, such as Message, Mail, and Facebook. Here's a screenshot of what I see:
If you don't see see the Drive Icon, swipe the row of colorful icons to the left, until you either see it, or you see "... More"
Touch More, and swipe down if necessary until you see Drive. Turn it on, and touch Done
Now you will see the Drive icon as one of the destinations, so touch it.
You may have to switch your account (the first outlined option), and you will have to Select Folder
When you find the folder where you want your photos stored, touch Save Here
And finally, you're ready to Upload. If you have a lot of photos, it might take some time - photos tend to be large. Go and have a glass of wine. I'm going to right now.