Infinix S3X vs Oppo A91

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

    S3X:
    LCD
    A91:
    OLED
  • Width

    A91: 2 mm narrower

    S3X:
    75.3 mm
    A91:
    73.3 mm
  • Screen diagonal

    S3X: 0.2 in smaller diagonal

    S3X:
    6.2 in
    A91:
    6.4 in
  • Chipset

    S3X:
    Qualcomm MSM8937 Snapdragon 430 (28 nm)
    A91:
    Mediatek MT6771V Helio P70 (12nm)
  • Rear camera layout

    S3X:
    Dual
    A91:
    Quad
  • Height

    S3X: 3.5 mm shorter

    S3X:
    156.7 mm
    A91:
    160.2 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. S3X

    Height:
    156.7 mm
    Width:
    75.3 mm +2 mm versus A91
    Depth:
    8 mm
    Weight:
    Unknown
  2. 2. A91

    Height:
    160.2 mm +3.5 mm versus S3X
    Width:
    73.3 mm
    Depth:
    7.9 mm
    Weight:
    172 g

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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. S3X

    S3X: Screen geometry unavailable or conflicting.

  2. 2. A91

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

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 S3X, A91, compared at the same storage capacity.
StorageS3XA91
128 GB Unknown 8 GB RAM
S3X: 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. S3X

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 128 GB (dedicated slot)

2. A91

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. S3X

    4000 mAh

  2. 2. A91

    4025 mAh

    +25 mAh versus S3X

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. S3X2. A91

Everyday essentials
Everyday essentials — specifications for S3X, A91.
SpecificationS3XA91
Dimensions (HxWxD)
  • 156.7 Х 75.3 Х 8 mm
  • 160.2 Х 73.3 Х 7.9 mm
Weight
  • 0 g
  • 172 g
Technology
  • IPS LCD
  • AMOLED
Screen size
  • 6.2" inch
  • 6.4" inch
Screen resolution
  • 720 x 1500 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 GB
  • 4 GB RAM 32 GB
  • 3 GB RAM
  • 128GB 8GB RAM
Memory card support
  • microSD
  • up to 128 GB (dedicated slot)
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4000 mAh
  • Non-removable Li-Po
  • 4025 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 (Oreo)
  • Android 9.0 (Pie); ColorOS 6.1
Chipset
  • Qualcomm MSM8937 Snapdragon 430 (28 nm)
  • Mediatek MT6771V Helio P70 (12nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for S3X, A91.
SpecificationS3XA91
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 96.7 cm2
  • 100.4 cm2
Screen format Unknown
  • 20:9 (height:width)
Screen to body ratio
  • 82.0%
  • 85.5%
PPI /points per inch/
  • 0 PPI
  • 408 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for S3X, A91.
SpecificationS3XA91
Rear camera, main
  • 13 MP
  • Dual
  • 48 MP
  • Quad
Camera specs
  • 13 MP
  • PDAF -2 MP
  • depth sensor
  • 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 -2 MP B/W
  • f/2.4
  • 1/5.0"
  • 1.75µm -2 MP
  • 1.75µm
  • depth sensor
Functions
  • Dual-LED flash
  • panorama
  • HDR
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 16 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 16 MP
  • 1.4µm
  • 16 MP
  • f/2.0
  • 26mm (wide)
  • 1/3.1''
  • 1.0µm
Performance

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

Performance — specifications for S3X, A91.
SpecificationS3XA91
Processor CPU
  • Octa-core 1.4 GHz Cortex-A53
  • Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Graphics processor GPU
  • Adreno 505
  • Mali-G72 MP3
Antutu 7 score *
  • 43722
  • 135756
General specs
General specs — specifications for S3X, A91.
SpecificationS3XA91
Release date
  • 2018
  • 2019
  • December
Colors
  • Ice Blue
  • Sandstone Black
  • Tradewinds Grey
  • Dark Blue
  • Red
  • Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 260 EUR
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • plastic back
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for S3X, A91.
SpecificationS3XA91
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac/ax
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • USB On-The-Go
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for S3X, A91.
SpecificationS3XA91
Radio
  • FM radio
  • FM radio
Others Unknown
  • 430 nits typ. brightness
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for S3X, A91.
SpecificationS3XA91
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Charging 5V/2A 10W
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 20W
  • 50% in 30 min -VOOC 3.0