Xiaomi Mi Max vs Yezz Billy 4

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    Billy 4: 94 g lighter

    Mi Max:
    203 g
    Billy 4:
    109 g
  • Width

    Billy 4: 23.9 mm narrower

    Mi Max:
    88.3 mm
    Billy 4:
    64.4 mm
  • Screen diagonal

    Billy 4: 2.44 in smaller diagonal

    Mi Max:
    6.44 in
    Billy 4:
    4 in
  • Chipset

    Mi Max:
    Qualcomm MSM8956 Snapdragon 650 -Qualcomm MSM8976 Snapdragon 652 (28 nm) Prime model
    Billy 4:
    Qualcomm MSM8212 Snapdragon 200 (28 nm)
  • Depth

    Mi Max: 2.4 mm thinner

    Mi Max:
    7.5 mm
    Billy 4:
    9.9 mm
  • Height

    Billy 4: 50.6 mm shorter

    Mi Max:
    173.1 mm
    Billy 4:
    122.5 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. Mi Max

    Height:
    173.1 mm +50.6 mm versus Billy 4
    Width:
    88.3 mm +23.9 mm versus Billy 4
    Depth:
    7.5 mm
  2. 2. Billy 4

    Height:
    122.5 mm
    Width:
    64.4 mm
    Depth:
    9.9 mm +2.4 mm versus Mi Max

Weight

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

  1. 1. Mi Max

    203 g

    +94 g versus Billy 4

  2. 2. Billy 4

    109 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. Mi Max

    Screen diagonal:
    6.44 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    114.3 cm²
  2. 2. Billy 4

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²

Mi Max has approximately 151.1% more rectangular screen area than Billy 4.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Mi Max: Original memory entry

16 GB · 2 GB RAM; 32/64 GB · 3 GB RAM128 GB · 4 GB RAM - Prime model

Billy 4: Original memory entry

4 GB · 512 MB 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. Mi Max

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 1 slot)

2. Billy 4

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB

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. Mi Max

    4850 mAh

    +3550 mAh versus Billy 4

  2. 2. Billy 4

    1300 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. Mi Max2. Billy 4

Everyday essentials
Everyday essentials — specifications for Mi Max, Billy 4.
SpecificationMi MaxBilly 4
Dimensions (HxWxD)
  • 173.1 Х 88.3 Х 7.5 mm
  • 122.5 Х 64.4 Х 9.9 mm
Weight
  • 203 g
  • 109 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 6.44" inch
  • 4" inch
Screen resolution
  • 1080 x 1920 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 2 GB RAM; 32/64 GB
  • 3 GB RAM128 GB
  • 4 GB RAM - Prime model
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 256 GB (uses SIM 1 slot)
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 4850 mAh
  • Non-removable Li-Ion
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 6.0 (Marshmallow)
  • upgradable to 7.0 (Nougat); MIUI 10
  • Microsoft Windows Phone 8.1
Chipset
  • Qualcomm MSM8956 Snapdragon 650 -Qualcomm MSM8976 Snapdragon 652 (28 nm) Prime model
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Mi Max, Billy 4.
SpecificationMi MaxBilly 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 114.3 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 74.8%
  • 57.7%
PPI /points per inch/
  • 342 PPI
  • 233 PPI
Screen protection
  • Corning Gorilla Glass 4
Unknown
Camera and Video
Camera and Video — specifications for Mi Max, Billy 4.
SpecificationMi MaxBilly 4
Rear camera, main
  • 16 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 16 MP
  • PDAF
  • f/2.0
  • 8 MP
  • AF
Functions
  • Dual-LED dual-tone flash
  • panorama
  • HDR
  • LED flash
Video
  • 1080p@30fps
  • 720p@30fps
Front camera, selfie
  • 5 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • 5 MP
  • f/2.0
  • 1.3 MP
Performance

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

Performance — specifications for Mi Max, Billy 4.
SpecificationMi MaxBilly 4
Processor CPU
  • Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A72) -Octa-core (4x1.4 GHz Cortex-A53 & 4x1.8 GHz Cortex-A72)
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • Adreno 510
  • Adreno 302
GeekBench 4 Single Core *
  • 1376
Unknown
GeekBench 4 Multi-Core *
  • 3146
Unknown
GeekBench 4 RenderScript *
  • 3679
Unknown
GeekBench 4 Battery *
  • 2489
Unknown
GeekBench 5 Single Core *
  • 261
Unknown
GeekBench 5 Multi-Core *
  • 770
Unknown
General specs
General specs — specifications for Mi Max, Billy 4.
SpecificationMi MaxBilly 4
Release date
  • 2016
  • May
  • 2014
  • June
Colors
  • Gray
  • Silver
  • Gold
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 350 h (2G) / Up to 300 h (3G) Talking time- Up to 7 h (2G) / Up to 4 h 30 min (3G)
Body build
  • Front glass
  • aluminum body
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Mi Max, Billy 4.
SpecificationMi MaxBilly 4
SIM card
  • Hybrid Dual SIM (Nano-SIM/ Micro-SIM
  • dual stand-by)
  • Dual SIM (Micro-SIM)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 / 1900 -3G - HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO TD-SCDMA -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA
  • LTE
  • HSPA 42.2/5.76 Mbps
GPRS
  • Yes
  • Class 12
Edge
  • Yes
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • DLNA
  • hotspot
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • USB Host
  • microUSB 2.0
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 4.0
  • A2DP
Harmful irradiation
  • SAR - 0.84 W/kg (head) 0.63 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Mi Max, Billy 4.
SpecificationMi MaxBilly 4
Radio
  • FM radio
  • recording
  • Stereo FM radio
Others
  • Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for Mi Max, Billy 4.
SpecificationMi MaxBilly 4
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Versions: Global; Standard; Prime
  • Sensors Accelerometer
  • proximity