I don't understand why, but I get different responses to video lag on the screen with a Samsung 10.1" tablet and a Samsung S6 Edge phone. The phone is a lot better than the tablet on freezing up where there are times the menu seems stuck until the breaking up goes away. There have been times where I hit the shutter button and the breakup doesn't get to the drone so I miss a shot too. The second P4 I had seemed to have overall bad RF too (Lose of signal a lot!) against the first one.
So with the 3rd P4 drone I picked up yesterday at Best Buy (First two had defects, and both operated differently in the loss of signal too!) along with an Apple iPad
Air 2 +cellular (for the GPS part) with the 9.7" non-reflective screen. No breakup at all - not even once! The Apple menu is a bit different than the Android one in its layout too.
The thing with the Apple I really hated (and I was tempted to take it out in the street and run over it!!), and me never have owning any Apple stuff before, is if you lose the ability to get your fingerprint read to unlock it, and you inputted some alpha-numeric combination as a passcode - which supersedes a password - and mess it up against only using six numbers for the passcode, you are locked out of the device for 15 minutes, and if you really screwed up the **** passcode you are locked out very well. Took me around 14 hours of fighting between iTunes and the iPad turning off and need to reboot to resume the 1.90GB download (Crummy DSL is not recommended!) to erase and restore the iPad so I could get back in. Wasn't happy about relaunching the iTune app and unplugging the Firewire cable to resume every 15 minutes either, but I think I got it figured out. Apple does seem a lot slower on their downloaded apps than Android too, a lot slower, but the display seems to be rock-steady on it.
So I'm hoping the testing today gives me a good P4. Third's a charm...maybe.
Mack