T-Mobile Comet vs Xiaomi Redmi Y3

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

    Comet: 77.9 g lighter

    Comet:
    102.1 g
    Redmi Y3:
    180 g
  • Width

    Comet: 19.7 mm narrower

    Comet:
    55.9 mm
    Redmi Y3:
    75.6 mm
  • Screen diagonal

    Comet: 3.46 in smaller diagonal

    Comet:
    2.8 in
    Redmi Y3:
    6.26 in
  • Chipset

    Comet:
    Qualcomm MSM7225 Snapdragon S1
    Redmi Y3:
    Qualcomm SDM632 Snapdragon 632 (14 nm)
  • Rear camera layout

    Comet:
    Single
    Redmi Y3:
    Dual
  • Depth

    Redmi Y3: 4.2 mm thinner

    Comet:
    12.7 mm
    Redmi Y3:
    8.5 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 +4.2 mm versus Redmi Y3
  2. 2. Redmi Y3

    Height:
    158.7 mm +54.6 mm versus Comet
    Width:
    75.6 mm +19.7 mm versus Comet
    Depth:
    8.5 mm

Weight

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

  1. 1. Comet

    102.1 g

  2. 2. Redmi Y3

    180 g

    +77.9 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 Y3

    Screen diagonal:
    6.26 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    97.8 cm²

Redmi Y3 has approximately 302.9% 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 Y3: 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 Y3

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 512 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 Y3

    4000 mAh

    +2800 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 Y3

Everyday essentials
Everyday essentials — specifications for Comet, Redmi Y3.
SpecificationCometRedmi Y3
Dimensions (HxWxD)
  • 104.1 Х 55.9 Х 12.7 mm
  • 158.7 Х 75.6 Х 8.5 mm
Weight
  • 102.1 g
  • 180 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.8" inch
  • 6.26" inch
Screen resolution
  • 240 x 320 px
  • 720 x 1520 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 512 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 2.2 (Froyo)
  • Android 9.0 (Pie); MIUI 9
Chipset
  • Qualcomm MSM7225 Snapdragon S1
  • Qualcomm SDM632 Snapdragon 632 (14 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Comet, Redmi Y3.
SpecificationCometRedmi Y3
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 24.3 cm2
  • 97.8 cm2
Screen format
  • 4:3 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 41.7%
  • 81.5%
PPI /points per inch/
  • 143 PPI
  • 269 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Comet, Redmi Y3.
SpecificationCometRedmi Y3
Rear camera, main
  • 3.15 MP
  • Single
  • 12 MP
  • Dual
Camera specs
  • 3.15 MP
  • 12 MP
  • f/2.2
  • 1.25µm
  • PDAF -2 MP
  • depth sensor
Functions Unknown
  • HDR
Video
  • CIF
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 32 MP
  • Single
Specifications Unknown
  • 32 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 Comet, Redmi Y3.
SpecificationCometRedmi Y3
Processor CPU
  • 528 MHz ARM 11
  • Octa-core (4x1.8 GHz Kryo 250 Gold & 4x1.8 GHz Kryo 250 Silver)
Graphics processor GPU
  • No
  • Adreno 506
Antutu 7 score * Unknown
  • 103602
GeekBench 4 Single Core * Unknown
  • 1236
GeekBench 4 Multi-Core * Unknown
  • 4213
GeekBench 5 Single Core * Unknown
  • 89
GeekBench 5 Multi-Core * Unknown
  • 545
General specs
General specs — specifications for Comet, Redmi Y3.
SpecificationCometRedmi Y3
Release date
  • 2010
  • November
  • 2019
  • April
Colors
  • Black
  • Elegant Blue
  • Bold Red
  • Prime Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
  • 10000 INR
Battery life
  • Stand by time- Up to 288 h Talking time- Up to 9 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Comet, Redmi Y3.
SpecificationCometRedmi Y3
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 / 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
  • HSPA 7.2/0.384 Mbps
  • HSPA
  • LTE-A
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • 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
  • GALILEO
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 2.0
  • A2DP
  • Yes
Music and Audio
Music and Audio — specifications for Comet, Redmi Y3.
SpecificationCometRedmi Y3
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Comet, Redmi Y3.
SpecificationCometRedmi Y3
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 - Fast battery charging 10W - Splash resistant - For India