Allview X4 Xtreme vs Oppo Ace2

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

    X4 Xtreme:
    LCD
    Ace2:
    OLED
  • Weight

    Ace2: 40.9 g lighter

    X4 Xtreme:
    226.9 g
    Ace2:
    186 g
  • Width

    Ace2: 7.9 mm narrower

    X4 Xtreme:
    83.3 mm
    Ace2:
    75.4 mm
  • Screen diagonal

    X4 Xtreme: 0.55 in smaller diagonal

    X4 Xtreme:
    6 in
    Ace2:
    6.55 in
  • Chipset

    X4 Xtreme:
    Mediatek MT6757T Helio P25 (16 nm)
    Ace2:
    Qualcomm SM8250 Snapdragon 865 (7 nm+)
  • Depth

    Ace2: 0.5 mm thinner

    X4 Xtreme:
    9.1 mm
    Ace2:
    8.6 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. X4 Xtreme

    Height:
    166.4 mm +6.4 mm versus Ace2
    Width:
    83.3 mm +7.9 mm versus Ace2
    Depth:
    9.1 mm +0.5 mm versus Ace2
  2. 2. Ace2

    Height:
    160 mm
    Width:
    75.4 mm
    Depth:
    8.6 mm

Weight

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

  1. 1. X4 Xtreme

    226.9 g

    +40.9 g versus Ace2

  2. 2. Ace2

    186 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. X4 Xtreme

    Screen diagonal:
    6 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    99.2 cm²
  2. 2. Ace2

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

Ace2 has approximately 4.4% more rectangular screen area than X4 Xtreme.

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 X4 Xtreme, Ace2, compared at the same storage capacity.
StorageX4 XtremeAce2
128 GB Unknown 8 GB RAM
256 GB Unknown 8 / 12 GB RAM Alternative RAM configurations
X4 Xtreme: Original memory entry

up to 64 GB (dedicated slot) · 512GB 4GB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. X4 Xtreme

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 slot)

2. Ace2

NFC:
Yes
Headphone jack:
No
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. X4 Xtreme

    4550 mAh

    +550 mAh versus Ace2

  2. 2. Ace2

    4000 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. X4 Xtreme2. Ace2

Everyday essentials
Everyday essentials — specifications for X4 Xtreme, Ace2.
SpecificationX4 XtremeAce2
Dimensions (HxWxD)
  • 166.4 Х 83.3 Х 9.1 mm
  • 160 Х 75.4 Х 8.6 mm
Weight
  • 226.9 g
  • 186 g
Technology
  • IPS LCD
  • AMOLED
Screen size
  • 6" inch
  • 6.55" inch
Screen resolution
  • 1080 x 1920 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • up to 64 GB (dedicated slot)
  • 512GB 4GB
  • 128GB 8GB RAM
  • 256GB 8GB RAM
  • 256GB 12GB RAM
Memory card support
  • microSD
  • up to 256 GB (uses SIM 2 slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 4550 mAh
  • Non-removable Li-Po
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 7.0 (Nougat)
  • Android 10.0; ColorOS 7.1
Chipset
  • Mediatek MT6757T Helio P25 (16 nm)
  • Qualcomm SM8250 Snapdragon 865 (7 nm+)
NFC
  • Super AMOLED
  • Yes
Headphone jack
  • Yes
  • No
Display
Display — specifications for X4 Xtreme, Ace2.
SpecificationX4 XtremeAce2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 99.2 cm2
  • 103.6 cm2
Screen format
  • 16:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 146.1 Х 71.6 Х 9.9 mm
  • 85.9%
PPI /points per inch/
  • 367 PPI
  • 402 PPI
Screen protection
  • Corning Gorilla Glass 3
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for X4 Xtreme, Ace2.
SpecificationX4 XtremeAce2
Rear camera, main
  • 13 MP
  • Dual-LED flash
  • 48 MP
  • Quad
Camera specs
  • 13 MP
  • PDAF -5 MP
  • (ultrawide/depth sensor)
  • 48 MP
  • f/1.7
  • 26mm (wide)
  • 1/2.0''
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0''
  • 1.12µm
  • AF -2 MP B/W
  • (depth) -2 MP
  • (depth)
Functions
  • Dual-LED flash
  • HDR
  • panorama
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 20 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 20 MP
  • 16 MP
  • f/2.4
  • 29mm (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 X4 Xtreme, Ace2.
SpecificationX4 XtremeAce2
Processor CPU
  • Octa-core (4x2.5 GHz Cortex-A53 & 4x1.4 GHz Cortex-A53)
  • Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585)
Graphics processor GPU
  • Mali-T880MP2
  • Adreno 650
Antutu 7 score *
  • 58758
Unknown
General specs
General specs — specifications for X4 Xtreme, Ace2.
SpecificationX4 XtremeAce2
Release date
  • 2017
  • June
  • 2020
  • April 13
Colors
  • Mocha Gold
  • Aurora Silver
  • Moon Rock Grey
  • Fantasy Purple
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 520 EUR
Battery life
  • Stand by time- Up to 379 h Talking time- Up to 25 h
Unknown
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for X4 Xtreme, Ace2.
SpecificationX4 XtremeAce2
SIM card
  • Hybrid Dual SIM (Micro-SIM/Nano SIM)
  • 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 / 2100-4G - LTE band 1(2100)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2CDMA 800 / 1900 & TD-SCDMA -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 12(700)
  • 17(700)
  • 20(800)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500) - China -5G - 5G band 1(2100)
  • 41(2500)
  • 78(3500)
  • 79(4700); SA/NSA - China
Speed
  • HSPA 21.1/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
  • HSPA
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac/ax
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with dual-band A-GPS
  • GLONASS
  • BDS
  • GALILEO
  • QZSS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • EDR
  • 5.1
  • A2DP
  • LE
  • aptX HD
Harmful irradiation
  • SAR EU - 1.01 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for X4 Xtreme, Ace2.
SpecificationX4 XtremeAce2
Radio
  • FM radio
Unknown
Others Unknown
  • 500 nits typ. brightness (advertised) -HDR10+ -90Hz refresh rate
Other features
Other features — specifications for X4 Xtreme, Ace2.
SpecificationX4 XtremeAce2
Dop
  • Sensors Fingerprint (front-mounted)
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - For Europe
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 65W
  • 100% in 30 min (advertised) -SuperVOOC 2.0 -Fast wireless charging 40W
  • 100% in 56 min (advertised) -Wireless reverse charging 10W