My Galaxy S4 suddenly stopped backing up photos to Google+ back in June - I'm guessing this is because of storage limits but can't find anything confirming that. When I try to do a manual backup (connecting my phone to my Mac via USB) only a very few photos actually come through in iPhoto - like maybe 10 photos when I have 100 on the phone. What's going on? How do I back up these photos? Is this an Android/Mac thing or am I doing something wrong?