Allview X4 Xtreme vs Lenovo K900

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

    K900: 64.9 g lighter

    X4 Xtreme:
    226.9 g
    K900:
    162 g
  • Width

    K900: 5.3 mm narrower

    X4 Xtreme:
    83.3 mm
    K900:
    78 mm
  • Screen diagonal

    K900: 0.5 in smaller diagonal

    X4 Xtreme:
    6 in
    K900:
    5.5 in
  • Chipset

    X4 Xtreme:
    Mediatek MT6757T Helio P25 (16 nm)
    K900:
    Intel Atom Z2580
  • Depth

    K900: 2.2 mm thinner

    X4 Xtreme:
    9.1 mm
    K900:
    6.9 mm
  • Height

    K900: 9.4 mm shorter

    X4 Xtreme:
    166.4 mm
    K900:
    157 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 +9.4 mm versus K900
    Width:
    83.3 mm +5.3 mm versus K900
    Depth:
    9.1 mm +2.2 mm versus K900
  2. 2. K900

    Height:
    157 mm
    Width:
    78 mm
    Depth:
    6.9 mm

Weight

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

  1. 1. X4 Xtreme

    226.9 g

    +64.9 g versus K900

  2. 2. K900

    162 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. K900

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

X4 Xtreme has approximately 19% more rectangular screen area than K900.

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, K900, compared at the same storage capacity.
StorageX4 XtremeK900
16 GB Unknown 2 GB RAM
32 GB Unknown 2 GB RAM
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. K900

NFC:
Unknown
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. X4 Xtreme

    4550 mAh

    +2050 mAh versus K900

  2. 2. K900

    2500 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. K900

Everyday essentials
Everyday essentials — specifications for X4 Xtreme, K900.
SpecificationX4 XtremeK900
Dimensions (HxWxD)
  • 166.4 Х 83.3 Х 9.1 mm
  • 157 Х 78 Х 6.9 mm
Weight
  • 226.9 g
  • 162 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 6" inch
  • 5.5" inch
Screen resolution
  • 1080 x 1920 px
  • 1080 x 1920 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
  • 16/32 GB
  • 2 GB 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
  • 2500 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 7.0 (Nougat)
  • Android 4.2 (Jelly Bean)
Chipset
  • Mediatek MT6757T Helio P25 (16 nm)
  • Intel Atom Z2580
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for X4 Xtreme, K900.
SpecificationX4 XtremeK900
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 99.2 cm2
  • 83.4 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 146.1 Х 71.6 Х 9.9 mm
  • 68.1%
PPI /points per inch/
  • 367 PPI
  • 401 PPI
Screen protection
  • Corning Gorilla Glass 3
  • Corning Gorilla Glass 2
Camera and Video
Camera and Video — specifications for X4 Xtreme, K900.
SpecificationX4 XtremeK900
Rear camera, main
  • 13 MP
  • Dual-LED flash
  • 13 MP
  • Single
Camera specs
  • 13 MP
  • PDAF -5 MP
  • (ultrawide/depth sensor)
  • 13 MP
  • AF
Functions
  • Dual-LED flash
  • HDR
  • panorama
  • Dual-LED flash
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 20 MP
  • Single
  • 2 MP
  • Single
Specifications
  • 20 MP
  • 2 MP
Performance

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

Performance — specifications for X4 Xtreme, K900.
SpecificationX4 XtremeK900
Processor CPU
  • Octa-core (4x2.5 GHz Cortex-A53 & 4x1.4 GHz Cortex-A53)
  • Dual-core 2.0 GHz
Graphics processor GPU
  • Mali-T880MP2
  • PowerVR SGX544MP2
Antutu 7 score *
  • 58758
  • 27313
General specs
General specs — specifications for X4 Xtreme, K900.
SpecificationX4 XtremeK900
Release date
  • 2017
  • June
  • 2013
  • January. Released 2013
  • April
Colors
  • Mocha Gold
  • Black/Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 360 EUR
Battery life
  • Stand by time- Up to 379 h Talking time- Up to 25 h
  • Stand by time- Up to 300 h (2G) / Up to 300 h (3G) Talking time- Up to 15 h (2G) / Up to 12 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for X4 Xtreme, K900.
SpecificationX4 XtremeK900
SIM card
  • Hybrid Dual SIM (Micro-SIM/Nano SIM)
  • Micro-SIM
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
Speed
  • HSPA 21.1/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
  • HSPA
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
  • dual band
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB Host
Bluetooth
  • 4.0
  • A2DP
  • EDR
  • 3.0
  • A2DP
Harmful irradiation
  • SAR EU - 1.01 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for X4 Xtreme, K900.
SpecificationX4 XtremeK900
Radio
  • FM radio
  • Stereo FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for X4 Xtreme, K900.
SpecificationX4 XtremeK900
Dop
  • Sensors Fingerprint (front-mounted)
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - For Europe
  • Sensors Accelerometer
  • proximity
  • compass