Good but not perfect..

I have this installed on all my kids iphones.. It works perfectly on my one kids I4, the 3GS i would say 75% good the last 3G doesnt work that well at all.. Will not update automatically.. I think because that is an older version Iphone.. So just so u know an also works perfect on my wife and my I4S.. Other thing it does drain the battery..

Oystershooter about GPS for iPhones