We recently upgraded one of our lines to a Samsung Galaxy Note 2. Family Maps used to locate the old phone (an HTC) without a problem but is unable to locate the new phone 95% of the time. I've verified that the phone is on and GPS and wifi are on but it still fails to locate. If I try to locate our other phone (iPhone 4s) Family Maps finds it practically every time. Anyone have any ideas/suggestions as to why the Samsung can't be located?