Xiaomi Redmi 5a 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: 28 g lighter

    Redmi 5a:
    137 g
    Billy 4:
    109 g
  • Width

    Billy 4: 5.7 mm narrower

    Redmi 5a:
    70.1 mm
    Billy 4:
    64.4 mm
  • Screen diagonal

    Billy 4: 1 in smaller diagonal

    Redmi 5a:
    5 in
    Billy 4:
    4 in
  • Chipset

    Redmi 5a:
    Qualcomm MSM8917 Snapdragon 425 (28 nm)
    Billy 4:
    Qualcomm MSM8212 Snapdragon 200 (28 nm)
  • Depth

    Redmi 5a: 1.5 mm thinner

    Redmi 5a:
    8.4 mm
    Billy 4:
    9.9 mm
  • Height

    Billy 4: 17.9 mm shorter

    Redmi 5a:
    140.4 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. Redmi 5a

    Height:
    140.4 mm +17.9 mm versus Billy 4
    Width:
    70.1 mm +5.7 mm versus Billy 4
    Depth:
    8.4 mm
  2. 2. Billy 4

    Height:
    122.5 mm
    Width:
    64.4 mm
    Depth:
    9.9 mm +1.5 mm versus Redmi 5a

Weight

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

  1. 1. Redmi 5a

    137 g

    +28 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. Redmi 5a

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

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

Redmi 5a has approximately 51.3% 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.

Redmi 5a: Original memory entry

32 GB · 3 GB RAM 16 GB · 2 GB RAM

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. Redmi 5a

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 128 GB (dedicated 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. Redmi 5a

    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. Redmi 5a2. Billy 4

Everyday essentials
Everyday essentials — specifications for Redmi 5a, Billy 4.
SpecificationRedmi 5aBilly 4
Dimensions (HxWxD)
  • 140.4 Х 70.1 Х 8.4 mm
  • 122.5 Х 64.4 Х 9.9 mm
Weight
  • 137 g
  • 109 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5" inch
  • 4" inch
Screen resolution
  • 720 x 1280 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 3 GB RAM 16 GB
  • 2 GB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 128 GB (dedicated slot)
  • 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 7.1.2 (Nougat); MIUI 10
  • Microsoft Windows Phone 8.1
Chipset
  • Qualcomm MSM8917 Snapdragon 425 (28 nm)
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Redmi 5a, Billy 4.
SpecificationRedmi 5aBilly 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 68.0 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 69.1%
  • 57.7%
PPI /points per inch/
  • 296 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for Redmi 5a, Billy 4.
SpecificationRedmi 5aBilly 4
Rear camera, main
  • 13 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 13 MP
  • PDAF
  • f/2.2
  • 8 MP
  • AF
Functions
  • LED flash
  • HDR
  • panorama
  • 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 Redmi 5a, Billy 4.
SpecificationRedmi 5aBilly 4
Processor CPU
  • Quad-core 1.4 GHz Cortex-A53
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • Adreno 308
  • Adreno 302
Antutu 7 score *
  • 32456
Unknown
GeekBench 4 Single Core *
  • 660
Unknown
GeekBench 4 Multi-Core *
  • 2014
Unknown
GeekBench 4 RenderScript *
  • 1368
Unknown
GeekBench 5 Single Core *
  • 124
Unknown
GeekBench 5 Multi-Core *
  • 410
Unknown
General specs
General specs — specifications for Redmi 5a, Billy 4.
SpecificationRedmi 5aBilly 4
Release date
  • 2017
  • November
  • 2014
  • June
Colors
  • Gold
  • Dark Gray
  • Rose Gold
  • Blue
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 110 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 Redmi 5a, Billy 4.
SpecificationRedmi 5aBilly 4
SIM card
  • Dual 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 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 34(2000)
  • 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 b/g/n
  • Wi-Fi 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
  • microUSB 2.0
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for Redmi 5a, Billy 4.
SpecificationRedmi 5aBilly 4
Radio
  • FM radio
  • Stereo FM radio
Others
  • Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for Redmi 5a, Billy 4.
SpecificationRedmi 5aBilly 4
Dop
  • Sensors Accelerometer
  • proximity
  • Infrared port - For India; China
  • Sensors Accelerometer
  • proximity