Not sure how it all works so hopefully someone can steer me in the right direction. My wife has an S4, I have a Note 5. She 'inherited' the S4 from me, and I believe that it was/still is linked to a Google Play account in my name. This is, I think, the cause behind some major issues where she installed programs that were already on my account on my Note5 - it made several on the Note5 no longer work even after she uninstalled them. Now I was under the impression you could run several devices through a single Play account - but perhaps not. What I want to do is: 1. Set up a Google Play account in her name 2. Dis-associate my Google Play account with the S4 device 3. Download and install whatever programs she needs, via HER Play account. Now in case it matters - she will be running BlueMail and have access to all our various email accounts. How Samsung treats this, and whether it is relevant to this scenario I have no idea, but I thought I'd better mention it. If anyone can steer me in the right direction, that'd be great.