The T-Mobile MDA Vario IV is a Windows Mobile smartphone with a slide-out QWERTY keyboard, designed for business and productivity use. Below are its key specifications and a summary of customer reviews.

Specifications:

• Operating System: Windows Mobile 6.1 Professional
• Processor: Qualcomm MSM7201A, 528 MHz
• Display: 2.8-inch TFT resistive touchscreen, 640 x 480 (VGA) resolution
• Keyboard: Slide-out QWERTY
• Memory: 256 MB RAM, 512 MB ROM (expandable via microSD)
• Camera: 3.15 MP rear camera (no front camera)
• Connectivity: 3G (HSDPA), Wi-Fi 802.11b/g, Bluetooth 2.0, GPS
• Battery: 1500 mAh removable
• Dimensions: 110 x 58 x 18.5 mm
• Weight: 168 g

Summary of Customer Reviews:

• Pros:

  • Solid build quality with a comfortable keyboard for typing.
  • Bright, sharp VGA display for its time.
  • Good battery life under moderate use.
  • Reliable GPS and 3G connectivity.
  • Expandable storage via microSD.

• Cons:

  • Windows Mobile 6.1 feels outdated compared to modern OS.
  • Resistive touchscreen requires pressure, less responsive than capacitive screens.
  • Processor is slow for multitasking.
  • Camera quality is mediocre.
  • Bulky and heavy compared to newer smartphones.

Overall, the MDA Vario IV was praised for its productivity features but criticized for its aging OS and hardware limitations.