I also have tried both types and continue to do so. I've been testing the ATT Vivid (Droid) 4G for a few weeks & so far no issues whatsoever. I get the FULL bells & whistles as I have to thoroughly test, play everything on cell phones. My team & I do this before we recommend what mobile devices to be used/allowed inside our HP firewall. We also make sure they meet our security standards. I'm testing about 10 cell phones, all using different IOS (Android, Iphone, webOS, Windows, Symbian, Blackberry, etc.) Competition is very strong right now & actually Android is steadily rising & we feel it will be a very short time it passes IPhone. Just MHO & based on what I do.... I know, I know... it sucks, someone has to do it. To top it all off, I HAVE to work from home too. LOL Did I mention we also have to test all tablets coming in to the market?