T-Mobile Comet vs Xiaomi Redmi S2

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

    Comet: 67.9 g lighter

    Comet:
    102.1 g
    Redmi S2:
    170 g
  • Width

    Comet: 21.4 mm narrower

    Comet:
    55.9 mm
    Redmi S2:
    77.3 mm
  • Screen diagonal

    Comet: 3.19 in smaller diagonal

    Comet:
    2.8 in
    Redmi S2:
    5.99 in
  • Chipset

    Comet:
    Qualcomm MSM7225 Snapdragon S1
    Redmi S2:
    Qualcomm MSM8953 Snapdragon 625 (14 nm)
  • Rear camera layout

    Comet:
    Single
    Redmi S2:
    Dual
  • Depth

    Redmi S2: 4.6 mm thinner

    Comet:
    12.7 mm
    Redmi S2:
    8.1 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. Comet

    Height:
    104.1 mm
    Width:
    55.9 mm
    Depth:
    12.7 mm +4.6 mm versus Redmi S2
  2. 2. Redmi S2

    Height:
    160.7 mm +56.6 mm versus Comet
    Width:
    77.3 mm +21.4 mm versus Comet
    Depth:
    8.1 mm

Weight

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

  1. 1. Comet

    102.1 g

  2. 2. Redmi S2

    170 g

    +67.9 g versus Comet

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. Comet

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. Redmi S2

    Screen diagonal:
    5.99 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    92.6 cm²

Redmi S2 has approximately 281.4% more rectangular screen area than Comet.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Redmi S2: Original memory entry

64 GB · 4 GB RAM 32 GB · 3 GB 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. Comet

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

2. Redmi S2

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

    1200 mAh

  2. 2. Redmi S2

    3080 mAh

    +1880 mAh versus Comet

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. Comet2. Redmi S2

Everyday essentials
Everyday essentials — specifications for Comet, Redmi S2.
SpecificationCometRedmi S2
Dimensions (HxWxD)
  • 104.1 Х 55.9 Х 12.7 mm
  • 160.7 Х 77.3 Х 8.1 mm
Weight
  • 102.1 g
  • 170 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.8" inch
  • 5.99" inch
Screen resolution
  • 240 x 320 px
  • 720 x 1440 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded. Unknown
  • 64 GB
  • 4 GB RAM 32 GB
  • 3 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • 2 GB included
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 3080 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 2.2 (Froyo)
  • Android 8.1 (Oreo); MIUI 10
Chipset
  • Qualcomm MSM7225 Snapdragon S1
  • Qualcomm MSM8953 Snapdragon 625 (14 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Comet, Redmi S2.
SpecificationCometRedmi S2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 24.3 cm2
  • 92.6 cm2
Screen format
  • 4:3 (height:width)
  • 18:9 (height:width)
Screen to body ratio
  • 41.7%
  • 74.5%
PPI /points per inch/
  • 143 PPI
  • 269 PPI
Camera and Video
Camera and Video — specifications for Comet, Redmi S2.
SpecificationCometRedmi S2
Rear camera, main
  • 3.15 MP
  • Single
  • 12 MP
  • Dual
Camera specs
  • 3.15 MP
  • 12 MP
  • f/2.2
  • 1.25µm
  • PDAF -5 MP
  • depth sensor
Functions Unknown
  • HDR
  • LED flash
Video
  • CIF
  • 1080p@30fps (gyro-EIS)
Front camera, selfie
  • 0 MP,
  • 16 MP
  • Single
Specifications Unknown
  • 16 MP
Performance

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

Performance — specifications for Comet, Redmi S2.
SpecificationCometRedmi S2
Processor CPU
  • 528 MHz ARM 11
  • Octa-core 2.0 GHz Cortex-A53
Graphics processor GPU
  • No
  • Adreno 506
Antutu 7 score * Unknown
  • 78926
GeekBench 4 Single Core * Unknown
  • 835
GeekBench 4 Multi-Core * Unknown
  • 4087
GeekBench 5 Single Core * Unknown
  • 168
GeekBench 5 Multi-Core * Unknown
  • 985
General specs
General specs — specifications for Comet, Redmi S2.
SpecificationCometRedmi S2
Release date
  • 2010
  • November
  • 2018
  • May
Colors
  • Black
  • Gray
  • Gold
  • Rose Gold
  • Mesmerising Blue
  • Stunning Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
  • 150 EUR
Battery life
  • Stand by time- Up to 288 h Talking time- Up to 9 h
Unknown
Body build Unknown
  • Front glass
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for Comet, Redmi S2.
SpecificationCometRedmi S2
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 - China -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 38(2600)
  • 40(2300) - Global LTE band 1(2100)
  • 40(2300)
  • 41(2500) - India LTE band 1(2100)
  • 34(2000)
  • 39(1900)
  • 41(2500) - China
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • A2DP
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Comet, Redmi S2.
SpecificationCometRedmi S2
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Comet, Redmi S2.
SpecificationCometRedmi S2
Dop
  • Sensors Accelerometer MP3/WMA/eAAC+ player -MP4/H.264 player -Organizer -Photo viewer/editor -Voice memo/dial/commands -Predictive text input (Swype) For T-Mobile
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Charging 5V/2A 10W - Also known as Xiaomi Redmi Y2 in India