Samsung DoubleTime I857 vs Xiaomi Redmi Note 9 Pro

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

    DoubleTime I857: 61 g lighter

    DoubleTime I857:
    148 g
    Redmi Note 9 Pro:
    209 g
  • Width

    DoubleTime I857: 14.7 mm narrower

    DoubleTime I857:
    62 mm
    Redmi Note 9 Pro:
    76.7 mm
  • Screen diagonal

    DoubleTime I857: 3.47 in smaller diagonal

    DoubleTime I857:
    3.2 in
    Redmi Note 9 Pro:
    6.67 in
  • Chipset

    DoubleTime I857:
    Qualcomm MSM7230
    Redmi Note 9 Pro:
    Qualcomm SM7125 Snapdragon 720G (8 nm)
  • Rear camera layout

    DoubleTime I857:
    Single
    Redmi Note 9 Pro:
    Quad
  • Depth

    Redmi Note 9 Pro: 6.2 mm thinner

    DoubleTime I857:
    15 mm
    Redmi Note 9 Pro:
    8.8 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. DoubleTime I857

    Height:
    113 mm
    Width:
    62 mm
    Depth:
    15 mm +6.2 mm versus Redmi Note 9 Pro
  2. 2. Redmi Note 9 Pro

    Height:
    165.8 mm +52.8 mm versus DoubleTime I857
    Width:
    76.7 mm +14.7 mm versus DoubleTime I857
    Depth:
    8.8 mm

Weight

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

  1. 1. DoubleTime I857

    148 g

  2. 2. Redmi Note 9 Pro

    209 g

    +61 g versus DoubleTime I857

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. DoubleTime I857

    Screen diagonal:
    3.2 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    30.5 cm²
  2. 2. Redmi Note 9 Pro

    Screen diagonal:
    6.67 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    107.4 cm²

Redmi Note 9 Pro has approximately 252.3% more rectangular screen area than DoubleTime I857.

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 DoubleTime I857, Redmi Note 9 Pro, compared at the same storage capacity.
StorageDoubleTime I857Redmi Note 9 Pro
64 GB Unknown 4 GB RAM
128 GB Unknown 6 GB RAM
DoubleTime I857: Original memory entry

260 MB · 256 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. DoubleTime I857

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

2. Redmi Note 9 Pro

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSDXC (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. DoubleTime I857

    1200 mAh

  2. 2. Redmi Note 9 Pro

    5020 mAh

    +3820 mAh versus DoubleTime I857

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. DoubleTime I8572. Redmi Note 9 Pro

Everyday essentials
Everyday essentials — specifications for DoubleTime I857, Redmi Note 9 Pro.
SpecificationDoubleTime I857Redmi Note 9 Pro
Dimensions (HxWxD)
  • 113 Х 62 Х 15 mm
  • 165.8 Х 76.7 Х 8.8 mm
Weight
  • 148 g
  • 209 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 3.2" inch
  • 6.67" inch
Screen resolution
  • 320 x 480 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 260 MB
  • 256 MB RAM
  • 64GB 4GB RAM
  • 128GB 6GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 5020 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 2.2 (Froyo)
  • Android 10.0; MIUI 11
Chipset
  • Qualcomm MSM7230
  • Qualcomm SM7125 Snapdragon 720G (8 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for DoubleTime I857, Redmi Note 9 Pro.
SpecificationDoubleTime I857Redmi Note 9 Pro
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 30.5 cm2
  • 107.4 cm2
Screen format
  • 3:2 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 43.5%
  • 84.5%
PPI /points per inch/
  • 180 PPI
  • 395 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for DoubleTime I857, Redmi Note 9 Pro.
SpecificationDoubleTime I857Redmi Note 9 Pro
Rear camera, main
  • 3.15 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 3.15 MP
  • AF
  • 48 MP
  • f/1.8
  • 26mm (wide)
  • 1/2.0"
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0"
  • 1.12µm -5 MP
  • f/2.4
  • (macro)
  • 1.12µm -2 MP
  • (depth)
Functions Unknown
  • HDR
  • panorama
Video
  • 320p
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 16 MP
  • Single
Specifications Unknown
  • 16 MP
  • f/2.5
  • (wide)
  • 1.0µm
Performance

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

Performance — specifications for DoubleTime I857, Redmi Note 9 Pro.
SpecificationDoubleTime I857Redmi Note 9 Pro
Processor CPU
  • 800 MHz Scorpion
  • Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)
Graphics processor GPU
  • Adreno 205
  • Adreno 618
Antutu 8 score * Unknown
  • 275962
General specs
General specs — specifications for DoubleTime I857, Redmi Note 9 Pro.
SpecificationDoubleTime I857Redmi Note 9 Pro
Release date
  • 2011
  • October
  • 2020
  • March 12
Colors
  • Black/White
  • Aurora Blue
  • Glacier white
  • Interstellar Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 160 EUR
Battery life
  • Stand by time- Up to 250 h Talking time- Up to 6 h
Unknown
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for DoubleTime I857, Redmi Note 9 Pro.
SpecificationDoubleTime I857Redmi Note 9 Pro
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)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 7.2/2 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • No
  • 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
  • GALILEO
  • BDS
  • NavIC
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 3.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Harmful irradiation
  • SAR - 0.54 W/kg (head) 0.97 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for DoubleTime I857, Redmi Note 9 Pro.
SpecificationDoubleTime I857Redmi Note 9 Pro
Radio
  • No
  • FM radio
  • recording
Others
  • Secondary TFT capacitive touchscreen (with multitouch)
  • 320 x 480 pixels
  • 3.2 inches
  • 450 nits typ. brightness (advertised)
Other features
Other features — specifications for DoubleTime I857, Redmi Note 9 Pro.
SpecificationDoubleTime I857Redmi Note 9 Pro
Dop
  • Sensors Accelerometer
  • proximity
  • compass - MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -Photo/video editor -Document viewer -Voice memo/dial/commands -Predictive text input - For AT&T
  • Sensors Fingerprint (side-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast charging 18W - Splash-proof