01-11-2013, 04:09 AM
It's not called Google Play Store, it's called Play Store. If you're signed into your Gmail account you should be good to go. It's actually simpler than iTunes. The shopping bag is nothing but a "back" button that takes you to home page of the Play Store. Click on the search icon and type in Square. Then download it. It should work, despite you having a nearly 3 year old phone.