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Asus Zenfone 3s Max ZC521TL 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

      Zenfone 3s Max ZC521TL:
      LCD
      A91:
      OLED

    • Screen diagonal

      Zenfone 3s Max ZC521TL: 1.2 in smaller diagonal

      Zenfone 3s Max ZC521TL:
      5.2 in
      A91:
      6.4 in

    • Chipset

      Zenfone 3s Max ZC521TL:
      Mediatek MT6750 (28 nm)
      A91:
      Mediatek MT6771V Helio P70 (12nm)

    • Rear camera layout

      Zenfone 3s Max ZC521TL:
      Single
      A91:
      Quad

    • Release year

      Zenfone 3s Max ZC521TL:
      2017
      A91:
      2019

    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. Zenfone 3s Max ZC521TL

      Height:
      Unknown
      Width:
      Unknown
      Depth:
      Unknown

      Unavailable dimensions are omitted from the drawing.

    2. 2. A91

      Height:
      160.2 mm
      Width:
      73.3 mm
      Depth:
      7.9 mm

    Weight

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

    1. 1. Zenfone 3s Max ZC521TL

      175 g

      +3 g versus A91

    2. 2. A91

      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.

    1. 1. Zenfone 3s Max ZC521TL

      Screen diagonal:
      5.2 in
      Aspect ratio (height:width):
      16:9
      Approximate rectangular screen area:
      74.5 cm²

    2. 2. A91

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

    A91 has approximately 32.7% more rectangular screen area than Zenfone 3s Max ZC521TL.

    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 Zenfone 3s Max ZC521TL, A91, compared at the same storage capacity.
    StorageZenfone 3s Max ZC521TLA91
    32 GB 3 GB RAM Not recorded
    128 GB Not recorded 8 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. Zenfone 3s Max ZC521TL

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 256 GB (uses SIM 2 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. Zenfone 3s Max ZC521TL

      5000 mAh

      +975 mAh versus A91

    2. 2. A91

      4025 mAh

    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. Zenfone 3s Max ZC521TL2. A91

    Everyday essentials
    Everyday essentials — specifications for Zenfone 3s Max ZC521TL, A91.
    SpecificationZenfone 3s Max ZC521TLA91
    Dimensions (HxWxD)
    • Х Х mm
    • 160.2 Х 73.3 Х 7.9 mm
    Weight
    • 175 g
    • 172 g
    Technology
    • IPS LCD
    • AMOLED
    Screen size
    • 5.2" inch
    • 6.4" inch
    Screen resolution
    • 720 x 1280 px
    • 1080 x 2400 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 32 GB
    • 3 GB RAM
    • 128GB 8GB RAM
    Memory card support
    • microSD
    • up to 256 GB (uses SIM 2 slot)
    • microSD
    • up to 256 GB (dedicated slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 5000 mAh
    • Non-removable Li-Po
    • 4025 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 7 (Nougat); ZenUI 3
    • Android 9.0 (Pie); ColorOS 6.1
    Chipset
    • Mediatek MT6750 (28 nm)
    • Mediatek MT6771V Helio P70 (12nm)
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for Zenfone 3s Max ZC521TL, A91.
    SpecificationZenfone 3s Max ZC521TLA91
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 74.5 cm2
    • 100.4 cm2
    Screen format
    • 16:9 (height:width)
    • 20:9 (height:width)
    Screen to body ratio Unknown
    • 85.5%
    PPI /points per inch/
    • 282 PPI
    • 408 PPI
    Screen protection Unknown
    • Corning Gorilla Glass 5
    Camera and Video
    Camera and Video — specifications for Zenfone 3s Max ZC521TL, A91.
    SpecificationZenfone 3s Max ZC521TLA91
    Rear camera, main
    • 13 MP
    • Single
    • 48 MP
    • Quad
    Camera specs
    • 13 MP
    • AF
    • f/2.0
    • 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 dual-tone flash
    • panorama
    • HDR
    • HDR
    Video
    • 1080p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 8 MP
    • Single
    • 16 MP
    • Single
    Specifications
    • 8 MP
    • 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 Zenfone 3s Max ZC521TL, A91.
    SpecificationZenfone 3s Max ZC521TLA91
    Processor CPU
    • Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
    • Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
    Graphics processor GPU
    • Mali-T860MP2
    • Mali-G72 MP3
    Antutu 7 score * Unknown
    • 135756
    General specs
    General specs — specifications for Zenfone 3s Max ZC521TL, A91.
    SpecificationZenfone 3s Max ZC521TLA91
    Release date
    • 2017
    • January
    • 2019
    • December
    Colors
    • Gold
    • Black
    • Dark Blue
    • Red
    • Blue
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 180 EUR
    • 260 EUR
    Battery life
    • Stand by time- Up to 816 h (3G) Talking time- Up to 28 h (3G)
    		 Unknown
    Body build Unknown
    • Glass front (Gorilla Glass 5)
    • plastic back
    • plastic frame
    Communication and Connectivity
    Communication and Connectivity — specifications for Zenfone 3s Max ZC521TL, A91.
    SpecificationZenfone 3s Max ZC521TLA91
    SIM card
    • Hybrid Dual SIM (Micro-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 / 1900 / 2100 - Global HSDPA 850 / 900 / 2100 - India -4G - LTE band 1(2100)
    • 2(1900)
    • 3(1800)
    • 4(1700/2100)
    • 5(850)
    • 7(2600)
    • 8(900)
    • 18(800)
    • 19(800)
    • 26(850)
    • 28(700)
    • 38(2600)
    • 41(2500) - Taiwan LTE band 1(2100)
    • 40(2300) - India
    • 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 a/b/g/n/ac
    • dual-band
    • WiFi Direct
    • hotspot
    • Wi-Fi 802.11 a/b/g/n/ac/ax
    • dual-band
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    • 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
    • 4.0
    • A2DP
    • EDR
    • 4.2
    • A2DP
    • LE
    Music and Audio
    Music and Audio — specifications for Zenfone 3s Max ZC521TL, A91.
    SpecificationZenfone 3s Max ZC521TLA91
    Radio
    • FM radio
    • FM radio
    Others
    • Active noise cancellation with dedicated mic
    • 430 nits typ. brightness
    • Active noise cancellation with dedicated mic
    Other features
    Other features — specifications for Zenfone 3s Max ZC521TL, A91.
    SpecificationZenfone 3s Max ZC521TLA91
    Dop
    • Sensors Fingerprint (front-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass - Power Bank/Reverse charging
    • Sensors Fingerprint (under display
    • optical)
    • accelerometer
    • gyro
    • proximity
    • compass - Fast charging 20W
    • 50% in 30 min -VOOC 3.0

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