Hi, In the near future, I was maybe thinking about putting an iPhone 4 into a home made capsule suspended by a bunch of helium filled balloons. I want to let it float away into the sky with no tether line to retrieve it, so that I can have a chance to capture the HD video footage during the flight. I don't know how to use proper GPS tracking devices to locate anything such as a SPOT GPS Tracker, except for this feature that I use in iCloud called "Find My Phone". Can that feature work while my iPhone 4 records the footage? I am not using this for high altitude flights such as amateur balloon projects, I just want to let it float skyward until it bursts at about 5 or 6 miles up in the air, but the iPhone 4 said it can only operate at maximum altitudes at 10,000 feet. What do I need to do?