Last night I realized that my phone had started to backup 58 GB photos from my phone to Googles servers. I had not requested this. I'm fine to upload some data to Google. I do for example have Gmail, files in Drive and a few shared albums in Google Photos. But that's completely different from blankly uploading all my photos! I do have privacy concerns, and of course 58 GB will not fit on my 17 GB quota.