The compatibility test is not an open standard, and Google unilaterally excludes anything that it doesn't like: http://arstechnica.com/gadgets/2013/10/googles-i

The compatibility test is not an open standard, and Google unilaterally excludes anything that it doesn't like: http://arstechnica.com/gadgets/2013/10/googles-iron-grip-on-android-controlling-open-source-by-any-means-necessary/3/ http://arstechnica.com/gadgets/2013/10/googles-iron-grip-on-... Relevant bit: > Switching to Skyhook's service meant Google would not be able to collect location data from users. This was bad for Google, so Skyhook was declared "incompatible." OEMs that wanted the Google Apps were not allowed to use them. Skyhook sued, and the lawsuit is still pending.