T-Mobile Sidekick vs Xiaomi Mi 9T

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: 63 g lighter

    Sidekick:
    128 g
    Mi 9T:
    191 g
  • Width

    Sidekick: 16.3 mm narrower

    Sidekick:
    58 mm
    Mi 9T:
    74.3 mm
  • Screen diagonal

    Sidekick: 3.79 in smaller diagonal

    Sidekick:
    2.6 in
    Mi 9T:
    6.39 in
  • Rear camera layout

    Sidekick:
    Single
    Mi 9T:
    Triple
  • Depth

    Mi 9T: 9.2 mm thinner

    Sidekick:
    18 mm
    Mi 9T:
    8.8 mm
  • Height

    Sidekick: 37.7 mm shorter

    Sidekick:
    119 mm
    Mi 9T:
    156.7 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

    Height:
    119 mm
    Width:
    58 mm
    Depth:
    18 mm +9.2 mm versus Mi 9T
  2. 2. Mi 9T

    Height:
    156.7 mm +37.7 mm versus Sidekick
    Width:
    74.3 mm +16.3 mm versus Sidekick
    Depth:
    8.8 mm

Weight

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

  1. 1. Sidekick

    128 g

  2. 2. Mi 9T

    191 g

    +63 g versus Sidekick

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

    Screen diagonal:
    2.6 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    19.2 cm²
  2. 2. Mi 9T

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

Mi 9T has approximately 420.9% more rectangular screen area than Sidekick.

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, Mi 9T, compared at the same storage capacity.
StorageSidekickMi 9T
64 GB Unknown 6 GB RAM
128 GB Unknown 6 GB RAM
Sidekick: Original memory entry

128 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. Sidekick

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD (dedicated slot)

2. Mi 9T

NFC:
Yes
Headphone jack:
Yes
Memory card support:
No

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

    1030 mAh

  2. 2. Mi 9T

    4000 mAh

    +2970 mAh versus Sidekick

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. Sidekick2. Mi 9T

Everyday essentials
Everyday essentials — specifications for Sidekick, Mi 9T.
SpecificationSidekickMi 9T
Dimensions (HxWxD)
  • 119 Х 58 Х 18 mm
  • 156.7 Х 74.3 Х 8.8 mm
Weight
  • 128 g
  • 191 g
Technology
  • TFT
  • AMOLED
Screen size
  • 2.6" inch
  • 6.39" inch
Screen resolution
  • 240 x 400 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 MB RAM
  • 64 MB ROM
  • 64/128 GB
  • 6 GB RAM
Memory card support
  • microSD (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1030 mAh
  • Removable Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Danger 4.7
  • Android 9.0 (Pie); MIUI 10
Chipset Unknown
  • Qualcomm SDM730 Snapdragon 730 (8 nm)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Sidekick, Mi 9T.
SpecificationSidekickMi 9T
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 19.2 cm2
  • 100.2 cm2
Screen format
  • 5:3 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 27.9%
  • 86.1%
PPI /points per inch/
  • 179 PPI
  • 403 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Sidekick, Mi 9T.
SpecificationSidekickMi 9T
Rear camera, main
  • 1.3 MP
  • Single
  • 48 MP
  • Triple
Camera specs
  • 1.3 MP
  • 48 MP
  • f/1.8
  • 26mm (wide)
  • 1/2''
  • 0.8µm
  • PDAF -8 MP
  • f/2.4
  • 53mm (telephoto)
  • 1/4''
  • 1.12µm
  • PDAF
  • 2x optical zoom -13 MP
  • 12mm (ultrawide)
  • 1/3''
Functions Unknown
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 20 MP
  • Single
Specifications Unknown
  • Motorized pop-up 20 MP
  • f/2.2
  • 0.8µm
Performance

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

Performance — specifications for Sidekick, Mi 9T.
SpecificationSidekickMi 9T
Processor CPU Unknown
  • Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
Graphics processor GPU Unknown
  • Adreno 618
Antutu 7 score * Unknown
  • 218548
GeekBench 4 Single Core * Unknown
  • 2540
GeekBench 4 Multi-Core * Unknown
  • 6911
Antutu 8 score * Unknown
  • 264797
GeekBench 5 Single Core * Unknown
  • 529
GeekBench 5 Multi-Core * Unknown
  • 1658
General specs
General specs — specifications for Sidekick, Mi 9T.
SpecificationSidekickMi 9T
Release date
  • 2008
  • July
  • 2019
  • June
Colors
  • Black
  • Carbon black
  • Red flame
  • Glacier blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 300 EUR
Battery life
  • Stand by time- Up to 216 h Talking time- Up to 5 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Sidekick, Mi 9T.
SpecificationSidekickMi 9T
SIM card
  • Mini-SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 28(700)
  • 38(2600)
  • 40(2300)
Speed Unknown
  • HSPA 42.2/5.76 Mbps
  • LTE-A
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • miniUSB
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 2.0
  • A2DP
  • 5.0
  • A2DP
  • LE
  • aptX HD
Music and Audio
Music and Audio — specifications for Sidekick, Mi 9T.
SpecificationSidekickMi 9T
Radio
  • No
  • Yes
Others
  • Swivel display
  • HDR
  • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for Sidekick, Mi 9T.
SpecificationSidekickMi 9T
Dop
  • MP3/WAV/WMA audio player -MP4 player -Voice memo -Predictive text input
  • Sensors Fingerprint (under display)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 18W - For Global market