My wife and I would like to (and already do) use the same apple ID. I have iCloud turned on and hers is off because 5gb isn't enough for both of us. Here's what I want to do: Can we use the same ID, if we pay for more iCloud storage, to put all pictures taken with either iPhone into the same photo stream? We just max out our phones taking pictures of the baby and want to be able to access them from anywhere without taking up phone memory. Secondly, does turning on photo stream on your iPhone use the phone's memory to store the pictures or is it just accessed on the cloud? And lastly, how many pictures can be kept in photo stream? Do they ever self-delete if you reach a certain number of photos or memory level?