Lisa Gade reviews the Samsung Galaxy Mega 6.3 on AT&T. This is a 6.3" smartphone or phablet that's closer in size to a 7" tablet than a smartphone. It has a pleasing 1280 x 720 display, LTE 4G and it runs on a 1.7GHz dual core Qualcomm 400 CPU with Adreno 305 graphics. The Android 4.2.2 phone has the usual Samsung TouchWiz software and apps including multi-window, Air View, Smart Stay and wireless sharing. It has dual band WiFi 802.11ac, Bluetooth 4.0, NFC, a front 1.9MP camer