Oppo Joy Plus 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.

  • Display technology

    OLED versus LCD

    Joy Plus:
    LCD
    Mi 9T:
    OLED
  • Weight

    Joy Plus: 66 g lighter

    Joy Plus:
    125 g
    Mi 9T:
    191 g
  • Width

    Joy Plus: 11.3 mm narrower

    Joy Plus:
    63 mm
    Mi 9T:
    74.3 mm
  • Screen diagonal

    Joy Plus: 2.39 in smaller diagonal

    Joy Plus:
    4 in
    Mi 9T:
    6.39 in
  • Chipset

    Joy Plus:
    Mediatek MT6572 (28 nm)
    Mi 9T:
    Qualcomm SDM730 Snapdragon 730 (8 nm)
  • Rear camera layout

    Joy Plus:
    Single
    Mi 9T:
    Triple

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. Joy Plus

    Height:
    124 mm
    Width:
    63 mm
    Depth:
    9.9 mm +1.1 mm versus Mi 9T
  2. 2. Mi 9T

    Height:
    156.7 mm +32.7 mm versus Joy Plus
    Width:
    74.3 mm +11.3 mm versus Joy Plus
    Depth:
    8.8 mm

Weight

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

  1. 1. Joy Plus

    125 g

  2. 2. Mi 9T

    191 g

    +66 g versus Joy Plus

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. Joy Plus

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 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 120.1% more rectangular screen area than Joy Plus.

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 Joy Plus, Mi 9T, compared at the same storage capacity.
StorageJoy PlusMi 9T
4 GB 1 GB RAM Not recorded
64 GB Not recorded 6 GB RAM
128 GB Not recorded 6 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. Joy Plus

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (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. Joy Plus

    1700 mAh

  2. 2. Mi 9T

    4000 mAh

    +2300 mAh versus Joy Plus

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. Joy Plus2. Mi 9T

Everyday essentials
Everyday essentials — specifications for Joy Plus, Mi 9T.
SpecificationJoy PlusMi 9T
Dimensions (HxWxD)
  • 124 Х 63 Х 9.9 mm
  • 156.7 Х 74.3 Х 8.8 mm
Weight
  • 125 g
  • 191 g
Technology
  • IPS LCD
  • AMOLED
Screen size
  • 4" 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.
  • 4 GB
  • 1 GB RAM
  • 64/128 GB
  • 6 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1700 mAh
  • Removable Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 4.4 (KitKat); ColorOS 2
  • Android 9.0 (Pie); MIUI 10
Chipset
  • Mediatek MT6572 (28 nm)
  • Qualcomm SDM730 Snapdragon 730 (8 nm)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Joy Plus, Mi 9T.
SpecificationJoy PlusMi 9T
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 45.5 cm2
  • 100.2 cm2
Screen format
  • 5:3 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 58.3%
  • 86.1%
PPI /points per inch/
  • 233 PPI
  • 403 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Joy Plus, Mi 9T.
SpecificationJoy PlusMi 9T
Rear camera, main
  • 3.15 MP
  • Single
  • 48 MP
  • Triple
Camera specs
  • 3.15 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
  • LED flash
  • HDR
Video
  • 720p
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 20 MP
  • Single
Specifications
  • VGA
  • 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 Joy Plus, Mi 9T.
SpecificationJoy PlusMi 9T
Processor CPU
  • Dual-core 1.3 GHz Cortex-A7
  • Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
Graphics processor GPU
  • Mali-400
  • 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 Joy Plus, Mi 9T.
SpecificationJoy PlusMi 9T
Release date
  • 2015
  • April
  • 2019
  • June
Colors
  • White
  • Blue
  • Carbon black
  • Red flame
  • Glacier blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 100 EUR
  • 300 EUR
Communication and Connectivity
Communication and Connectivity — specifications for Joy Plus, Mi 9T.
SpecificationJoy PlusMi 9T
SIM card
  • Dual SIM (Mini-SIM/ Micro-SIM)
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
  • 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
  • HSPA
  • HSPA 42.2/5.76 Mbps
  • LTE-A
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
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • EDR
  • 5.0
  • A2DP
  • LE
  • aptX HD
Music and Audio
Music and Audio — specifications for Joy Plus, Mi 9T.
SpecificationJoy PlusMi 9T
Radio
  • FM radio
  • Yes
Others Unknown
  • HDR
  • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for Joy Plus, Mi 9T.
SpecificationJoy PlusMi 9T
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Fingerprint (under display)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 18W - For Global market