The Siemens AF51 is a compact flip phone released in the mid-2000s. Below are its key specifications and a summary of customer reviews.

Specifications:

• Display: 1.3-inch CSTN external screen, 1.8-inch TFT main display (128x160 pixels)
• Camera: VGA (0.3 MP)
• Memory: 11 MB internal storage, expandable via MicroSD (up to 1 GB)
• Battery: 650 mAh Li-Ion (up to 300h standby, 5h talk time)
• Connectivity: GSM 900/1800/1900, GPRS
• Dimensions: 85 x 45 x 19 mm
• Weight: 85g
• Other Features: MP3 player, FM radio, Bluetooth, WAP browser

Summary of Customer Reviews:

• Pros:

  • Compact and stylish flip design, easy to carry.
  • Decent battery life for basic calls and texts.
  • Simple and intuitive interface, suitable for basic use.
  • Bluetooth and expandable storage were appreciated for a budget phone.

• Cons:

  • Low-resolution camera with no flash.
  • Limited internal storage without a MicroSD card.
  • Basic features compared to smartphones; lacks modern apps.
  • Some users reported slow GPRS browsing speeds.

Overall, the Siemens AF51 was seen as a reliable, no-frills flip phone for basic communication but lacked advanced features even for its time.