I have been using a cheap tablet I bought at Best Buy with my Phantom 3 Standard since I purchased it in February 2016. I have never updated the firmware; I read horror stories, so I've just stuck with what works, albeit with some glitches on occasion. I have successfully done "Point of Interest" mode several times - it's fun. I want to try out Follow Me Mode, but even though the tablet has GPS (the DigiLand tablet - I mentioned it in another thread here: Can I use "Follow Me" with this tablet if I'm away from WiFi? ), it always indicates "GPS signal not strong enough...try again" when I try Follow Me mode on the tablet. Questions: #1: Can I actually use that tablet for follow-me mode? The phantom itself has always had sufficient GPS signals to fly, but the tablet never does. Can't figure out why. #2: If I skip the tablet and instead use my new iPhone 5s with my phantom 3 (since I know the phone gets a good GPS signal), with the DJI GO app that I just downloaded last week onto the phone, will that force me to update the firmware on the drone, since I have a version of DJI GO that is probably relatively new (downloaded in June 2016) and the drone was last updated in February 2016?