Xiaomi Mi Note Pro 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: 52 g lighter

    Mi Note Pro:
    161 g
    Billy 4:
    109 g
  • Width

    Billy 4: 13.2 mm narrower

    Mi Note Pro:
    77.6 mm
    Billy 4:
    64.4 mm
  • Screen diagonal

    Billy 4: 1.7 in smaller diagonal

    Mi Note Pro:
    5.7 in
    Billy 4:
    4 in
  • Chipset

    Mi Note Pro:
    Qualcomm MSM8994 Snapdragon 810 (20 nm)
    Billy 4:
    Qualcomm MSM8212 Snapdragon 200 (28 nm)
  • Depth

    Mi Note Pro: 2.9 mm thinner

    Mi Note Pro:
    7 mm
    Billy 4:
    9.9 mm
  • Height

    Billy 4: 32.6 mm shorter

    Mi Note Pro:
    155.1 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 Note Pro

    Height:
    155.1 mm +32.6 mm versus Billy 4
    Width:
    77.6 mm +13.2 mm versus Billy 4
    Depth:
    7 mm
  2. 2. Billy 4

    Height:
    122.5 mm
    Width:
    64.4 mm
    Depth:
    9.9 mm +2.9 mm versus Mi Note Pro

Weight

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

  1. 1. Mi Note Pro

    161 g

    +52 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 Note Pro

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

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

Mi Note Pro has approximately 96.7% 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 Note Pro: Original memory entry

64 GB · 512GB 4GB

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 Note Pro

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
No

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 Note Pro

    3000 mAh

    +1700 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 Note Pro2. Billy 4

Everyday essentials
Everyday essentials — specifications for Mi Note Pro, Billy 4.
SpecificationMi Note ProBilly 4
Dimensions (HxWxD)
  • 155.1 Х 77.6 Х 7 mm
  • 122.5 Х 64.4 Х 9.9 mm
Weight
  • 161 g
  • 109 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.7" inch
  • 4" inch
Screen resolution
  • 1440 x 2560 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 GB
  • 512GB 4GB
  • 4 GB
  • 512 MB RAM
Memory card support
  • No
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Ion
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 5.0.1 (Lollipop)
  • upgradable to 7.0 (Nougat); MIUI 9
  • Microsoft Windows Phone 8.1
Chipset
  • Qualcomm MSM8994 Snapdragon 810 (20 nm)
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Mi Note Pro, Billy 4.
SpecificationMi Note ProBilly 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 89.6 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 74.4%
  • 57.7%
PPI /points per inch/
  • 515 PPI
  • 233 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Mi Note Pro, Billy 4.
SpecificationMi Note ProBilly 4
Rear camera, main
  • 13 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 13 MP
  • OIS
  • AF
  • f/2.0
  • 8 MP
  • AF
Functions
  • Dual-LED dual-tone flash
  • HDR
  • panorama
  • LED flash
Video
  • 1080p@30fps
  • 720p@30fps
Front camera, selfie
  • 4 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • 4 MP
  • f/2.0
  • 1/3''
  • 2µm
  • 1.3 MP
Performance

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

Performance — specifications for Mi Note Pro, Billy 4.
SpecificationMi Note ProBilly 4
Processor CPU
  • Octa-core (4x1.5 GHz Cortex-A53 & 4x2.0 GHz Cortex-A57)
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • Adreno 430
  • Adreno 302
GeekBench 4 Single Core *
  • 1219
Unknown
GeekBench 4 Multi-Core *
  • 2715
Unknown
GeekBench 4 RenderScript *
  • 3930
Unknown
GeekBench 4 Battery *
  • 886
Unknown
GeekBench 5 Single Core *
  • 223
Unknown
GeekBench 5 Multi-Core *
  • 580
Unknown
General specs
General specs — specifications for Mi Note Pro, Billy 4.
SpecificationMi Note ProBilly 4
Release date
  • 2015
  • January
  • 2014
  • June
Colors
  • Black
  • White
  • Gold
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 250 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/back glass (Gorilla Glass 3)
  • aluminum frame
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Mi Note Pro, Billy 4.
SpecificationMi Note ProBilly 4
SIM card
  • Dual SIM (Micro-SIM/Nano-SIM
  • dual stand-by)
  • Dual SIM (Micro-SIM)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 1900 / 2100 -4G - LTE band 3(1800)
  • 7(2600)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA
  • LTE-A (3CA) Cat9 450/50 Mbps
  • 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
  • WiFi Direct
  • 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
  • 4.1
  • A2DP
  • LE
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for Mi Note Pro, Billy 4.
SpecificationMi Note ProBilly 4
Radio
  • No
  • Stereo FM radio
Others
  • Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for Mi Note Pro, Billy 4.
SpecificationMi Note ProBilly 4
Dop
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass
  • barometer - Fast battery charging (Quick Charge 2.0)
  • Sensors Accelerometer
  • proximity