So I've had my nexus for about 3 weeks now and have noticed that sometimes when I use my gps for navigation it takes minutes to lock in my position and sometimes won't work at all. The strange thing is sometimes it locks within 10-15 seconds. I'm not sure if this is an issue with the nexus or if there may be something wrong with mine. I'm currently stock, not rooted. Other than this I've had no issues it the phone and I'm enjoying it so far. Any suggestions would be appreciated!!