HTC J vs T-Mobile Sidekick LX

Compare recorded specifications, size and practical differences.

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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

    J: 25 g lighter

    J:
    137 g
    Sidekick LX:
    162 g
  • Width

    Sidekick LX: 6 mm narrower

    J:
    66 mm
    Sidekick LX:
    60 mm
  • Screen diagonal

    Sidekick LX: 1.3 in smaller diagonal

    J:
    4.3 in
    Sidekick LX:
    3 in
  • Depth

    J: 12.5 mm thinner

    J:
    9.5 mm
    Sidekick LX:
    22 mm
  • Height

    Sidekick LX: 2 mm shorter

    J:
    131.5 mm
    Sidekick LX:
    129.5 mm
  • Release year

    J:
    2012
    Sidekick LX:
    2007

Physical size

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. J

    Height:
    131.5 mm +2 mm versus Sidekick LX
    Width:
    66 mm +6 mm versus Sidekick LX
    Depth:
    9.5 mm
  2. 2. Sidekick LX

    Height:
    129.5 mm
    Width:
    60 mm
    Depth:
    22 mm +12.5 mm versus J

Weight

Bars start at zero and share a scale within this chart.

  1. 1. J

    137 g

  2. 2. Sidekick LX

    162 g

    +25 g versus J

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. J

    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

J 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.

Recorded RAM for J, Sidekick LX, compared at the same storage capacity.
StorageJSidekick LX
16 GB 1 GB RAM Unknown
Sidekick LX: Original memory entry

64 MB RAM · 64 MB ROM

Practical features

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

1. J

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot)

2. Sidekick LX

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD (dedicated slot)

Battery capacity

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

Recorded battery capacity

Bars start at zero and share a scale within this chart.

  1. 1. J

    1810 mAh

    +270 mAh versus Sidekick LX

  2. 2. Sidekick LX

    1540 mAh

Specifications

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.

1. J2. Sidekick LX

Everyday essentials
Everyday essentials — specifications for J, Sidekick LX.
SpecificationJSidekick LX
Dimensions (HxWxD)
  • 131.5 Х 66 Х 9.5 mm
  • 129.5 Х 60 Х 22 mm
Weight
  • 137 g
  • 162 g
Technology
  • AMOLED
  • TFT
Screen size
  • 4.3" inch
  • 3" inch
Screen resolution
  • 540 x 960 px
  • 240 x 400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 1 GB RAM
  • 64 MB RAM
  • 64 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1810 mAh
  • Removable Li-Ion
  • 1540 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.0.4 (Ice Cream Sandwich); Sense UI 4
  • Danger OS
Headphone jack
  • Yes
  • No
Display
Display — specifications for J, Sidekick LX.
SpecificationJSidekick LX
Touchscreen
  • capacitive touchscreen
Unknown
Display colors
  • 16M
  • 65K
Screen area
  • 51.0 cm2
  • 25.6 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 58.7%
  • 33.0%
PPI /points per inch/
  • 256 PPI
  • 155 PPI
Camera and Video
Camera and Video — specifications for J, Sidekick LX.
SpecificationJSidekick LX
Rear camera, main
  • 8 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 1.3 MP
Functions
  • LED flash
Unknown
Video
  • 720p
  • Yes
Front camera, selfie
  • 1.3 MP
  • Single
  • 0 MP,
Specifications
  • 1.3 MP
Unknown
Performance
Performance — specifications for J, Sidekick LX.
SpecificationJSidekick LX
Processor CPU
  • Dual-core 1.5 GHz
Unknown
General specs
General specs — specifications for J, Sidekick LX.
SpecificationJSidekick LX
Release date
  • 2012
  • April
  • 2007
  • September
Colors
  • Black
  • White
  • Red
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 220 EUR
  • 160 EUR
Battery life Unknown
  • Stand by time- Up to 96 h Talking time- Up to 6 h 50 min
Communication and Connectivity
Communication and Connectivity — specifications for J, Sidekick LX.
SpecificationJSidekick LX
SIM card
  • Mini-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 CDMA 800
Unknown
Speed
  • HSPA
Unknown
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • DLNA
  • hotspot; WiMAX 802.16 e
  • No
GPS
  • Yes
  • with A-GPS
  • No
USB
  • microUSB 2.0
  • Proprietary
Bluetooth
  • 4.0
  • A2DP
  • 2.0
Harmful irradiation Unknown
  • SAR - 0.40 W/kg (head) 0.46 W/kg (body)
Music and Audio
Music and Audio — specifications for J, Sidekick LX.
SpecificationJSidekick LX
Radio
  • No
  • No
Others
  • Beats Audio -Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for J, Sidekick LX.
SpecificationJSidekick LX
Dop
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - MP3/AAC+/WAV/WMA player -MP4/H.264/WMV player -Organizer -Document viewer -Photo viewer/editor -Voice memo/dial/commands -Predictive text input
  • MP3/WMA audio player -MP4 player -Voice memo