T-Mobile Sidekick 4G vs vivo X27

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

    Sidekick 4G: 26 g lighter

    Sidekick 4G:
    162 g
    X27:
    188 g
  • Width

    Sidekick 4G: 13.3 mm narrower

    Sidekick 4G:
    61 mm
    X27:
    74.3 mm
  • Screen diagonal

    Sidekick 4G: 2.89 in smaller diagonal

    Sidekick 4G:
    3.5 in
    X27:
    6.39 in
  • Rear camera layout

    Sidekick 4G:
    Single
    X27:
    Triple
  • Depth

    X27: 6 mm thinner

    Sidekick 4G:
    15 mm
    X27:
    9 mm
  • Height

    Sidekick 4G: 30.7 mm shorter

    Sidekick 4G:
    127 mm
    X27:
    157.7 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 mm versus X27
  2. 2. X27

    Height:
    157.7 mm +30.7 mm versus Sidekick 4G
    Width:
    74.3 mm +13.3 mm versus Sidekick 4G
    Depth:
    9 mm

Weight

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

  1. 1. Sidekick 4G

    162 g

  2. 2. X27

    188 g

    +26 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.

  1. 1. Sidekick 4G

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    34.9 cm²
  2. 2. X27

    Screen diagonal:
    6.39 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    100.2 cm²

X27 has approximately 187.5% more rectangular screen area than Sidekick 4G.

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, X27, compared at the same storage capacity.
StorageSidekick 4GX27
256 GB Unknown 8 GB RAM
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. X27

NFC:
See details Yes (market dependent)
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. X27

    4000 mAh

    +2500 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. X27

Everyday essentials
Everyday essentials — specifications for Sidekick 4G, X27.
SpecificationSidekick 4GX27
Dimensions (HxWxD)
  • 127 Х 61 Х 15 mm
  • 157.7 Х 74.3 Х 9 mm
Weight
  • 162 g
  • 188 g
Technology
  • TFT
  • Super AMOLED
Screen size
  • 3.5" inch
  • 6.39" inch
Screen resolution
  • 480 x 800 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 1 GB
  • 512 MB RAM
  • 256 GB
  • 8 GB 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
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 2.2 (Froyo)
  • Android 9.0 (Pie); Funtouch 9
Chipset
  • Hummingbird
  • Qualcomm SDM710 Snapdragon 710 (10 nm)
NFC Unknown
  • Yes (market dependent)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Sidekick 4G, X27.
SpecificationSidekick 4GX27
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 34.9 cm2
  • 101.7 cm2
Screen format
  • 5:3 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 45.0%
  • 86.8%
PPI /points per inch/
  • 267 PPI
  • 400 PPI
Camera and Video
Camera and Video — specifications for Sidekick 4G, X27.
SpecificationSidekick 4GX27
Rear camera, main
  • 3.15 MP
  • Single
  • 48 MP
  • Triple
Camera specs
  • 3.15 MP
  • AF
  • 48 MP
  • f/1.8
  • 1/2''
  • 0.8µm
  • PDAF -13 MP
  • 13mm (ultrawide) -5 MP
  • f/2.4
  • depth sensor
Functions Unknown
  • HDR
Video
  • 480p@30fps
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 16 MP
  • Single
Specifications
  • VGA
  • Motorized pop-up 16 MP
Performance

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

Performance — specifications for Sidekick 4G, X27.
SpecificationSidekick 4GX27
Processor CPU
  • 1.0 GHz Cortex-A8
  • Octa-core (2x2.2 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver)
Graphics processor GPU
  • PowerVR SGX540
  • Adreno 616
GeekBench 4 Single Core * Unknown
  • 3326
GeekBench 4 Multi-Core * Unknown
  • 11720
Antutu 8 score * Unknown
  • 215410
General specs
General specs — specifications for Sidekick 4G, X27.
SpecificationSidekick 4GX27
Release date
  • 2011
  • March
  • 2019
  • March
Colors
  • Matte Black
  • Pearl magenta
  • Blue
  • Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 310 EUR
  • 480 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, X27.
SpecificationSidekick 4GX27
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 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 7.2/5.76 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat12 600/50 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
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 3.0
  • A2DP
  • 5.0
  • A2DP
  • LE
  • EDR
  • aptX
Harmful irradiation
  • SAR - 0.34 W/kg (head) 0.96 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Sidekick 4G, X27.
SpecificationSidekick 4GX27
Radio
  • Nо
Unknown
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Sidekick 4G, X27.
SpecificationSidekick 4GX27
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 (under display)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 18W