HTC First vs T-Mobile Sidekick LX

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

• Weight

  First: 38.1 g lighter

  First:

  123.9 g

  Sidekick LX:

  162 g

• Width

  Sidekick LX: 5 mm narrower

  First:

  65 mm

  Sidekick LX:

  60 mm

• Screen diagonal

  Sidekick LX: 1.3 in smaller diagonal

  First:

  4.3 in

  Sidekick LX:

  3 in

• Depth

  First: 13.1 mm thinner

  First:

  8.9 mm

  Sidekick LX:

  22 mm

• Height

  First: 3.5 mm shorter

  First:

  126 mm

  Sidekick LX:

  129.5 mm

• Release year

  First:

  2013

  Sidekick LX:

  2007

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. 1. First

   Height:

   126 mm

   Width:

   65 mm +5 mm versus Sidekick LX

   Depth:

   8.9 mm

2. 2. Sidekick LX

   Height:

   129.5 mm +3.5 mm versus First

   Width:

   60 mm

   Depth:

   22 mm +13.1 mm versus First

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

1. 1. First

   Screen diagonal:

   4.3 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   51 cm²

2. 2. Sidekick LX

   Screen diagonal:

   3 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   25.6 cm²

First has approximately 99% more rectangular screen area than Sidekick LX.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

Battery capacity

Capacity is not battery life. No endurance test is implied.

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.