Motorola Droid 3 global (3G EVDO Rev. A - GSM, UMTS HSDPA), no LTE 4G!, is the successor of the Droid 2, Droid 3 comes as the global phone. The successor comes with double power processor, higher MP camera and better display technology and here is the specs comparison between the two Droid smartphone:
Processor
Droid 3 has a 1Ghz DUAL-CORE processor, while the Droid 2 has a 1 Ghz but SINGLE-CORE (TI OMAP).
Better Display technology
Droid 3 brings the better technology of the smartphone display, qHD display, and spots bigger size : 4". While Motorola Droid 2 comes with TFT display, size : 3.7 inches. Both with capacitive touchscreen, multi-touch, light sensor, and proximity sensor.
Cameras
Motorola Droid 3 has a better camera with 8 MP with LED flash, 1080p HD video recording (1920x1080), and also comes with front facing camera (VGA 1.3 MP) for video call. While the Droid 2 brings a 5 MP camera (with DUAL LED flash), video capture max to 720x480 (30fps) - DVD quality, and with no additional front facing camera.
Networks
Droid 3 works on CDMA 20001x, 3G EVDO Rev. A, also on GSM bands support 2G EDGE and 3G HSDPA UMTS service, make it enter to the global phone family. While the Droid 2 work on 3G EVDO (3.1 Mbps) or CDMA 20001x network where there is no 3G EVDO signals, GSM, EDGE HSDPA UMTS for Droid 2 Global.
Connectivity
Both come with BT, WI-FI BGN, 3.5mm sound jack, and DLNA
Motorola DROID 3 key features:
Global networks ( CDMA, GSM, UMTS)
Dual core 1 Ghz Processor
4" qHD display
8 MP 1080p HD Video capture, 1.3 MP video call camera