Oppo Realme U1 vs vivo Y81

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

    Y81: 21.5 g lighter

    Realme U1:
    168 g
    Y81:
    146.5 g
  • Width

    Realme U1: 1 mm narrower

    Realme U1:
    74 mm
    Y81:
    75 mm
  • Chipset

    Realme U1:
    Mediatek Helio P70 (12nm)
    Y81:
    Mediatek MT6762 Helio P22 (12 nm)
  • Rear camera layout

    Realme U1:
    Dual
    Y81:
    Single

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. Realme U1

    Height:
    157 mm
    Width:
    74 mm
    Depth:
    8 mm
  2. 2. Y81

    Height:
    155.1 mm
    Width:
    75 mm +1 mm versus Realme U1
    Depth:
    7.8 mm

Weight

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

  1. 1. Realme U1

    168 g

    +21.5 g versus Y81

  2. 2. Y81

    146.5 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. Realme U1

    Screen diagonal:
    6.3 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    97.4 cm²
  2. 2. Y81

    Screen diagonal:
    6.22 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    96.6 cm²

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.

Realme U1: Original memory entry

64 GB · 4 GB RAM 32 GB · 3 GB RAM

Y81: Original memory entry

32 GB · 3/4 GB 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. Realme U1

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

2. Y81

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. Realme U1

    3500 mAh

    +240 mAh versus Y81

  2. 2. Y81

    3260 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. Realme U12. Y81

Everyday essentials
Everyday essentials — specifications for Realme U1, Y81.
SpecificationRealme U1Y81
Dimensions (HxWxD)
  • 157 Х 74 Х 8 mm
  • 155.1 Х 75 Х 7.8 mm
Weight
  • 168 g
  • 146.5 g
Technology
  • LTPS IPS LCD
  • IPS LCD
Screen size
  • 6.3" inch
  • 6.22" inch
Screen resolution
  • 1080 x 2340 px
  • 720 x 1520 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 GB
  • 4 GB RAM 32 GB
  • 3 GB RAM
  • 32 GB
  • 3/4 GB RAM
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 3500 mAh
  • Non-removable Li-Ion
  • 3260 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 (Oreo); ColorOS 5.2
  • Android 8.1 (Oreo); Funtouch 4
Chipset
  • Mediatek Helio P70 (12nm)
  • Mediatek MT6762 Helio P22 (12 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Realme U1, Y81.
SpecificationRealme U1Y81
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 97.4 cm2
  • 96.6 cm2
Screen format
  • 19.5:9 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 83.9%
  • 83.0%
PPI /points per inch/
  • 409 PPI
  • 270 PPI
Screen protection
  • Corning Gorilla Glass 3
  • Corning Gorilla Glass (unspecified version)
Camera and Video
Camera and Video — specifications for Realme U1, Y81.
SpecificationRealme U1Y81
Rear camera, main
  • 13 MP
  • Dual
  • 13 MP
  • Single
Camera specs
  • 13 MP
  • f/2.2
  • AF -2 MP
  • f/2.4
  • depth sensor
  • 13 MP
  • f/2.2
  • PDAF
Functions
  • HDR
  • LED flash
  • HDR
  • panorama
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 25 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 25 MP
  • f/2.0
  • 1/2.8''
  • 0.9μm
  • 5 MP
  • f/2.2
Performance

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

Performance — specifications for Realme U1, Y81.
SpecificationRealme U1Y81
Processor CPU
  • Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
  • Octa-core 2.0 GHz Cortex-A53
Graphics processor GPU
  • Mali-G72 MP3
  • PowerVR GE8320
Antutu 7 score * Unknown
  • 70154
General specs
General specs — specifications for Realme U1, Y81.
SpecificationRealme U1Y81
Release date
  • 2018
  • November
  • 2018
  • June
Colors
  • Ambitious Black
  • Brave Blue
  • Fiery Gold
  • Black
  • Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 140 EUR
  • 180 EUR
Body build Unknown
  • Front glass
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for Realme U1, Y81.
SpecificationRealme U1Y81
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • 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 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 38(2600)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A Cat6 300/50 Mbps
  • HSPA
  • LTE
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • USB On-The-Go
  • microUSB 2.0
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Realme U1, Y81.
SpecificationRealme U1Y81
Radio
  • FM radio
  • No
Others
  • Active noise cancellation with dedicated mic
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Realme U1, Y81.
SpecificationRealme U1Y81
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast battery charging 5V/2A 10W
  • Sensors Fingerprint (rear-mounted) only 4 GB model; accelerometer
  • proximity
  • compass