December 2015
Hi, I was unable to play FIFA 15 Ultimate Team NS ever since I upgraded my Nexus 7(2013) to android 6.0(marshmallow)! After FIFA 15 NS not working on the tablet, i decided to play it on windows 10 and my slow android phone. It works fine but most of the time its really slow on the phone and I don't have all time access to the home pc. I have tried every troubleshooting tips and ways and none of them seem to make FIFA 15 NS work, i even reported the issue multiple times. No response and no no actions taken to resolve the issue. Even after android 6.0.1 update, it didn't work.
Yesterday, I downgraded from FIFA 15 NS 1.6.0 version to its previous version which is 1.5.6 and now its working fine. Only thing it is missing is the daily challenge update in 1.6.0, but that's not a big deal. If you need the previous apk, google FIFA 15 1.5.6 apk, I downloaded from apk4 fun, but there are plenty others. After downloading it, if you only have downloaded the apk, then it might download the OBB(data) file itself which is completely safe and essential.
December 2015
I updated to version 1.6.1 and now its working in Nexys 7 (2013). Try it bro!