My apologies if this has been asked before. I'm using a Nexus 7 (2013), with Android operating system 5.1.1. I've not rooted the device. Very impressed in general my phantom, the controller and the pilot app, with a couple of exceptions. The first is that the app will lock up (google error message), the second is that the video occasionally gets jerky. In reading in the forum, I understand that some people have found success for these problems in using an early version of Google Play. So here are my questions.... 1. Which version of Google Play? 2. If this isn't the initial version of Google Play that came with Android 5.1.1, how do I go about getting the earlier version? 3. My understanding is that Google Play plays a role in translating GPS data from the tablet into the app, but not a role in processing the P3 GPS data. Is this correct? If so, can I simply turn off the GPS functionality of the tablet to improve these problems. Thanks in advance for helping a newbie.