BLU J4 vs T-Mobile Sidekick 3

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

  J4: 32 g lighter

  J4:

  158 g

  Sidekick 3:

  190 g

• Width

  Sidekick 3: 13.3 mm narrower

  J4:

  72.3 mm

  Sidekick 3:

  59 mm

• Screen diagonal

  Sidekick 3: 2.9 in smaller diagonal

  J4:

  5.5 in

  Sidekick 3:

  2.6 in

• Depth

  J4: 12 mm thinner

  J4:

  10 mm

  Sidekick 3:

  22 mm

• Height

  Sidekick 3: 21 mm shorter

  J4:

  151 mm

  Sidekick 3:

  130 mm

• Release year

  J4:

  2019

  Sidekick 3:

  2006

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. J4

   Height:

   151 mm +21 mm versus Sidekick 3

   Width:

   72.3 mm +13.3 mm versus Sidekick 3

   Depth:

   10 mm

2. 2. Sidekick 3

   Height:

   130 mm

   Width:

   59 mm

   Depth:

   22 mm +12 mm versus J4

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. J4

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   18:9

   Approximate rectangular screen area:

   78.1 cm²

2. 2. Sidekick 3

   Screen diagonal:

   2.6 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   20.1 cm²

J4 has approximately 287.8% more rectangular screen area than Sidekick 3.

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.