Nokia E51 camera-free vs Xiaomi Redmi Note 4X

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

    E51 camera-free: 65 g lighter

    E51 camera-free:
    100 g
    Redmi Note 4X:
    165 g
  • Width

    E51 camera-free: 30 mm narrower

    E51 camera-free:
    46 mm
    Redmi Note 4X:
    76 mm
  • Screen diagonal

    E51 camera-free: 3.5 in smaller diagonal

    E51 camera-free:
    2 in
    Redmi Note 4X:
    5.5 in
  • Depth

    Redmi Note 4X: 3.5 mm thinner

    E51 camera-free:
    12 mm
    Redmi Note 4X:
    8.5 mm
  • Height

    E51 camera-free: 36.2 mm shorter

    E51 camera-free:
    114.8 mm
    Redmi Note 4X:
    151 mm
  • Release year

    E51 camera-free:
    2008
    Redmi Note 4X:
    2017

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 camera-free

    Height:
    114.8 mm
    Width:
    46 mm
    Depth:
    12 mm +3.5 mm versus Redmi Note 4X
  2. 2. Redmi Note 4X

    Height:
    151 mm +36.2 mm versus E51 camera-free
    Width:
    76 mm +30 mm versus E51 camera-free
    Depth:
    8.5 mm

Weight

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

  1. 1. E51 camera-free

    100 g

  2. 2. Redmi Note 4X

    165 g

    +65 g versus E51 camera-free

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 camera-free

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

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²

Redmi Note 4X has approximately 573.2% more rectangular screen area than E51 camera-free.

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 camera-free: Original memory entry

130 MB · 96 MB RAM

Redmi Note 4X: Original memory entry

64 GB · 4 GB RAM 16/32 GB · 3 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 camera-free

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

2. Redmi Note 4X

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 slot)

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 camera-free

    1050 mAh

  2. 2. Redmi Note 4X

    4100 mAh

    +3050 mAh versus E51 camera-free

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. E51 camera-free2. Redmi Note 4X

Everyday essentials
Everyday essentials — specifications for E51 camera-free, Redmi Note 4X.
SpecificationE51 camera-freeRedmi Note 4X
Dimensions (HxWxD)
  • 114.8 Х 46 Х 12 mm
  • 151 Х 76 Х 8.5 mm
Weight
  • 100 g
  • 165 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2" inch
  • 5.5" inch
Screen resolution
  • 240 x 320 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 130 MB
  • 96 MB RAM
  • 64 GB
  • 4 GB RAM 16/32 GB
  • 3 RAM
Memory card support
  • microSD
  • up to 16 GB (dedicated slot)
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1050 mAh
  • Removable Li-Ion
  • 4100 mAh
  • Non-removable Li-Po
Operating system OS
  • Symbian OS 9.2
  • Series 60 v3.1 UI
  • Android 6.0 (Marshmallow)
  • upgradable to 7.0 (Nougat); MIUI 10
Chipset Unknown
  • Qualcomm MSM8953 Snapdragon 625 (14 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for E51 camera-free, Redmi Note 4X.
SpecificationE51 camera-freeRedmi Note 4X
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 12.4 cm2
  • 83.4 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 23.5%
  • 72.7%
PPI /points per inch/
  • 200 PPI
  • 401 PPI
Camera and Video
Camera and Video — specifications for E51 camera-free, Redmi Note 4X.
SpecificationE51 camera-freeRedmi Note 4X
Rear camera, main
  • 0 MP,
  • 13 MP
  • Single
Camera specs Unknown
  • 13 MP
  • f/2.0
  • 1.12µm
  • PDAF
Functions Unknown
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video Unknown
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 5 MP
  • Single
Specifications Unknown
  • 5 MP
  • f/2.0
Performance

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

Performance — specifications for E51 camera-free, Redmi Note 4X.
SpecificationE51 camera-freeRedmi Note 4X
Processor CPU
  • 369 MHz ARM 11
  • Octa-core 2.0 GHz Cortex-A53
Graphics processor GPU Unknown
  • Adreno 506
Antutu 7 score * Unknown
  • 90236
GeekBench 4 Single Core * Unknown
  • 832
GeekBench 4 Multi-Core * Unknown
  • 3415
GeekBench 4 RenderScript * Unknown
  • 3045
GeekBench 5 Single Core * Unknown
  • 170
GeekBench 5 Multi-Core * Unknown
  • 944
General specs
General specs — specifications for E51 camera-free, Redmi Note 4X.
SpecificationE51 camera-freeRedmi Note 4X
Release date
  • 2008
  • February
  • 2017
  • February
Colors
  • Black
  • Silver
  • Platinum Silver
  • Champagne Gold
  • Matte Black
  • Hatsune Miku
  • Sakura Powder
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 130 EUR
  • 130 EUR
Battery life
  • Stand by time- Up to 310 h Talking time- Up to 4 h 20 min
Unknown
Body build Unknown
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for E51 camera-free, Redmi Note 4X.
SpecificationE51 camera-freeRedmi Note 4X
SIM card
  • Mini-SIM
  • Hybrid Dual SIM (Micro-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 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500) - Snapdragon model LTE band 1(2100)
  • 8(900)
  • 41(2500) - Mediatek model
Speed
  • HSPA 3.6/0.384 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 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
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 2.0
  • A2DP
  • 4.2
  • A2DP
  • LE
Harmful irradiation
  • SAR - 1.47 W/kg (head) 0.75 W/kg (body) SAR EU - 1.38 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for E51 camera-free, Redmi Note 4X.
SpecificationE51 camera-freeRedmi Note 4X
Radio
  • FM radio
  • FM radio
Others
  • Five-way scroll key -Downloadable themes
  • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for E51 camera-free, Redmi Note 4X.
SpecificationE51 camera-freeRedmi Note 4X
Dop
  • Infrared port - Push to talk -WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Document viewer -Predictive text input -Voice command/memo -Organizer -Nokia Intellisync Wireless Email -Exchange mail
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - For China