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Nokia E51 vs Oppo Realme X

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

    E51: 91 g lighter

    E51:
    100 g
    Realme X:
    191 g
  • Width

    E51: 30 mm narrower

    E51:
    46 mm
    Realme X:
    76 mm
  • Screen diagonal

    E51: 4.53 in smaller diagonal

    E51:
    2 in
    Realme X:
    6.53 in
  • Rear camera layout

    E51:
    Single
    Realme X:
    Dual
  • Depth

    Realme X: 2.6 mm thinner

    E51:
    12 mm
    Realme X:
    9.4 mm
  • Height

    E51: 46.4 mm shorter

    E51:
    114.8 mm
    Realme X:
    161.2 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. E51

    Height:
    114.8 mm
    Width:
    46 mm
    Depth:
    12 mm +2.6 mm versus Realme X
  2. 2. Realme X

    Height:
    161.2 mm +46.4 mm versus E51
    Width:
    76 mm +30 mm versus E51
    Depth:
    9.4 mm

Weight

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

  1. 1. E51

    100 g

  2. 2. Realme X

    191 g

    +91 g versus E51

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. E51

    Screen diagonal:
    2 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    12.4 cm²
  2. 2. Realme X

    Screen diagonal:
    6.53 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    104.7 cm²

Realme X has approximately 745% more rectangular screen area than E51.

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.

E51: Original memory entry

130 MB · 96 MB RAM

Realme X: Original memory entry

128/256 GB · 8 GB RAM 64 GB · 4/6 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. E51

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD · up to 16 GB (dedicated slot)

2. Realme X

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. E51

    1050 mAh

  2. 2. Realme X

    3765 mAh

    +2715 mAh versus E51

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. E512. Realme X

Everyday essentials
Everyday essentials — specifications for E51, Realme X.
SpecificationE51Realme X
Dimensions (HxWxD)
  • 114.8 Х 46 Х 12 mm
  • 161.2 Х 76 Х 9.4 mm
Weight
  • 100 g
  • 191 g
Technology
  • TFT
  • AMOLED
Screen size
  • 2" inch
  • 6.53" inch
Screen resolution
  • 240 x 320 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 130 MB
  • 96 MB RAM
  • 128/256 GB
  • 8 GB RAM 64 GB
  • 4/6 GB RAM
Memory card support
  • microSD
  • up to 16 GB (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1050 mAh
  • Removable Li-Ion
  • 3765 mAh
  • Non-removable Li-Po
Operating system OS
  • Symbian OS 9.2
  • Series 60 v3.1 UI
  • Android 9.0 (Pie); ColorOS 6
Chipset Unknown
  • Qualcomm SDM710 Snapdragon 710 (10 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for E51, Realme X.
SpecificationE51Realme X
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 12.4 cm2
  • 105.2 cm2
Screen format
  • 4:3 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 23.5%
  • 85.9%
PPI /points per inch/
  • 200 PPI
  • 394 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for E51, Realme X.
SpecificationE51Realme X
Rear camera, main
  • 2 MP
  • Single
  • 48 MP
  • Dual
Camera specs
  • 2 MP
  • 48 MP
  • f/1.7
  • (wide)
  • 26mm (wide)
  • 1/2''
  • 0.8µm
  • PDAF -5 MP
  • f/2.4
  • depth sensor
Functions Unknown
  • HDR
Video
  • 320p@15fps
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 16 MP
  • Single
Specifications Unknown
  • Motorized pop-up 16 MP
  • f/2.0
  • 25mm (wide)
  • 1/3''
  • 1.0µm
Performance

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

Performance — specifications for E51, Realme X.
SpecificationE51Realme X
Processor CPU
  • 369 MHz ARM 11
  • Octa-core (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
Graphics processor GPU Unknown
  • Adreno 616
GeekBench 5 Single Core * Unknown
  • 334
GeekBench 5 Multi-Core * Unknown
  • 1444
General specs
General specs — specifications for E51, Realme X.
SpecificationE51Realme X
Release date
  • 2007
  • September
  • 2019
  • May
Colors
  • Black
  • Silver
  • Steam white
  • Punk Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 120 EUR
  • 160 EUR
Battery life
  • Stand by time- Up to 310 h Talking time- Up to 4 h 20 min
Unknown
Body build Unknown
  • Front glass (Gorilla Glass 5)
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for E51, Realme X.
SpecificationE51Realme X
SIM card
  • Mini-SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA - China -3G - HSDPA 850 / 900 / 1700(AWS) / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 3.6/0.384 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE-A (2CA) Cat6 300/75 Mbps
GPRS
  • Class 32
  • Yes
Edge
  • Class 32
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g
  • VoIP over WLAN
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 2.0
  • A2DP
  • 5.0
  • A2DP
  • LE
  • aptX HD
Harmful irradiation
  • SAR - 1.38 W/kg (head) 0.75 W/kg (body) SAR EU - 1.47 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for E51, Realme X.
SpecificationE51Realme X
Radio
  • FM radio
  • FM radio
Others
  • Five-way scroll key -Downloadable themes
  • 2.5 mm audio jack
  • Active noise cancellation with dedicated mic -Dolby Atmos sound
Other features
Other features — specifications for E51, Realme X.
SpecificationE51Realme X
Dop
  • Infrared port - Push to talk -WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Document viewer (Word
  • Excel
  • PowerPoint
  • PDF) incl. MS Office 2007 support via free update -Predictive text input -Voice command/memo -Organizer
  • Sensors Fingerprint (under display)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 20W: 55% in 30 min (VOOC 3.0) - Versions: RMX1901