Strengths: Works very well bluetooth, wifi, decent camera,powerful processor, 2 batteries

Weaknesses: Cannot charge the phone using the phones USB cable, liitle bit heavy.

Summary: Windows based phone, with real key-dialpad outside, full qwerty keyboard, big touch screen. Phone is fast.The phone has a better reception,This phone replaced my old cell phone and a windows PDA.The screen is bright and the touchscreen works well. The speakerphone is loud and crispI added a 2 GB micro SD card to load my work related software. I also use wifi connection at work/home to download my emails, read word documents, excel files.Opening of the sliding keyboard feels solid, snappy.It also come with 2 batteries: Standard and extended batteries to take care of the extra power needed to run the applications the phone. You can listen to music, surf the web, and make/take calls on the phone. Some annoyances are: the call end button location is very odd, you need to get used to it--2 GB limit on the micro SD card --Odd location for Call Send/end buttons--Sleep Functionality - once asleep, only a tiny button on the top of the device can wake it up. Most devices seem to allow customization on how to wake the device up.

Strengths: Excellent voice call quality, good keyboard, external number pad, ease of use

Weaknesses: Bulk with extended battery, keyboard slids out too easily causing problems when pulling from holster, screen orientation sometimes hangs up.

Summary: The unit with the std battery carries well, with the extended battery just feels allot heavier. The call quality both voice in and out is excellent. The WiFi is easy to use. The only real problem is when answering the phone from a holster it is easy to open the keyboard and this affects the phone. You need to learn how to pick the unit up to prevent this, very annoying in the beginning.