T-Mobile Sidekick 4G vs vivo U10

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    Sidekick 4G: 28.5 g lighter

    Sidekick 4G:
    162 g
    U10:
    190.5 g
  • Width

    Sidekick 4G: 15.8 mm narrower

    Sidekick 4G:
    61 mm
    U10:
    76.8 mm
  • Screen diagonal

    Sidekick 4G: 2.85 in smaller diagonal

    Sidekick 4G:
    3.5 in
    U10:
    6.35 in
  • Rear camera layout

    Sidekick 4G:
    Single
    U10:
    Triple
  • Depth

    U10: 6.1 mm thinner

    Sidekick 4G:
    15 mm
    U10:
    8.9 mm
  • Height

    Sidekick 4G: 32.4 mm shorter

    Sidekick 4G:
    127 mm
    U10:
    159.4 mm

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. Sidekick 4G

    Height:
    127 mm
    Width:
    61 mm
    Depth:
    15 mm +6.1 mm versus U10
  2. 2. U10

    Height:
    159.4 mm +32.4 mm versus Sidekick 4G
    Width:
    76.8 mm +15.8 mm versus Sidekick 4G
    Depth:
    8.9 mm

Weight

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

  1. 1. Sidekick 4G

    162 g

  2. 2. U10

    190.5 g

    +28.5 g versus Sidekick 4G

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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. Sidekick 4G

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    34.9 cm²
  2. 2. U10

    U10: Screen geometry unavailable or conflicting.

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 Sidekick 4G, U10, compared at the same storage capacity.
StorageSidekick 4GU10
32 GB Unknown 3 GB RAM
64 GB Unknown 3 / 4 GB RAM Alternative RAM configurations
Sidekick 4G: Original memory entry

1 GB · 512 MB RAM

Practical features

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

1. Sidekick 4G

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot) · 2 GB included

2. U10

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB

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. Sidekick 4G

    1500 mAh

  2. 2. U10

    5000 mAh

    +3500 mAh versus Sidekick 4G

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. Sidekick 4G2. U10

Everyday essentials
Everyday essentials — specifications for Sidekick 4G, U10.
SpecificationSidekick 4GU10
Dimensions (HxWxD)
  • 127 Х 61 Х 15 mm
  • 159.4 Х 76.8 Х 8.9 mm
Weight
  • 162 g
  • 190.5 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 3.5" inch
  • 6.35" inch
Screen resolution
  • 480 x 800 px
  • 720 x 1544 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 1 GB
  • 512 MB RAM
  • 32GB 3GB RAM
  • 64GB 3GB RAM
  • 64GB 4GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • 2 GB included
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 5000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 2.2 (Froyo)
  • Android 9.0 (Pie)
Chipset
  • Hummingbird
  • Qualcomm SDM665 Snapdragon 665 (11 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Sidekick 4G, U10.
SpecificationSidekick 4GU10
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 34.9 cm2
  • 99.6 cm2
Screen format
  • 5:3 (height:width)
Unknown
Screen to body ratio
  • 45.0%
  • 81.4%
PPI /points per inch/
  • 267 PPI
  • 0 PPI
Camera and Video
Camera and Video — specifications for Sidekick 4G, U10.
SpecificationSidekick 4GU10
Rear camera, main
  • 3.15 MP
  • Single
  • 13 MP
  • Triple
Camera specs
  • 3.15 MP
  • AF
  • 13 MP
  • f/2.2
  • (wide)
  • PDAF -8 MP
  • 13mm (ultrawide) -2 MP
  • f/2.4
  • depth sensor
Functions Unknown
  • LED flash
  • HDR
  • panorama
Video
  • 480p@30fps
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 8 MP
  • Single
Specifications
  • VGA
  • 8 MP
  • f/1.8
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Sidekick 4G, U10.
SpecificationSidekick 4GU10
Processor CPU
  • 1.0 GHz Cortex-A8
  • Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
Graphics processor GPU
  • PowerVR SGX540
  • Adreno 610
Antutu 7 score * Unknown
  • 143200
General specs
General specs — specifications for Sidekick 4G, U10.
SpecificationSidekick 4GU10
Release date
  • 2011
  • March
  • 2019
  • September
Colors
  • Matte Black
  • Pearl magenta
  • Thunder Black
  • Electric Blue
  • Black
  • Blue
  • Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 310 EUR
  • 120 EUR
Battery life
  • Stand by time- Up to 456 h Talking time- Up to 6 h 30 min
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Sidekick 4G, U10.
SpecificationSidekick 4GU10
SIM card
  • Mini-SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 38(2600)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 7.2/5.76 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 400/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • DLNA
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 3.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Harmful irradiation
  • SAR - 0.34 W/kg (head) 0.96 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Sidekick 4G, U10.
SpecificationSidekick 4GU10
Radio
  • Nо
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Sidekick 4G, U10.
SpecificationSidekick 4GU10
Dop
  • Sensors Accelerometer
  • proximity - T-Mobile TV -MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -ThinkFree Office document editor
  • PDF viewer -Voice memo -Predictive text input - Optical trackpad - Also known as T-Mobile T839 Sidekick 4G
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast battery charging 18W - Also known as vivo U3x