Nokia E51 camera-free vs Xiaomi Mi 4i

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: 30 g lighter

    E51 camera-free:
    100 g
    Mi 4i:
    130 g
  • Width

    E51 camera-free: 23.6 mm narrower

    E51 camera-free:
    46 mm
    Mi 4i:
    69.6 mm
  • Screen diagonal

    E51 camera-free: 3 in smaller diagonal

    E51 camera-free:
    2 in
    Mi 4i:
    5 in
  • Depth

    Mi 4i: 4.2 mm thinner

    E51 camera-free:
    12 mm
    Mi 4i:
    7.8 mm
  • Height

    E51 camera-free: 23.3 mm shorter

    E51 camera-free:
    114.8 mm
    Mi 4i:
    138.1 mm
  • Release year

    E51 camera-free:
    2008
    Mi 4i:
    2015

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 +4.2 mm versus Mi 4i
  2. 2. Mi 4i

    Height:
    138.1 mm +23.3 mm versus E51 camera-free
    Width:
    69.6 mm +23.6 mm versus E51 camera-free
    Depth:
    7.8 mm

Weight

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

  1. 1. E51 camera-free

    100 g

  2. 2. Mi 4i

    130 g

    +30 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. Mi 4i

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

Mi 4i has approximately 456.4% 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.

Recorded RAM for E51 camera-free, Mi 4i, compared at the same storage capacity.
StorageE51 camera-freeMi 4i
16 GB Unknown 2 GB RAM
32 GB Unknown 2 GB RAM
E51 camera-free: Original memory entry

130 MB · 96 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. E51 camera-free

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

2. Mi 4i

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 camera-free

    1050 mAh

  2. 2. Mi 4i

    3120 mAh

    +2070 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. Mi 4i

Everyday essentials
Everyday essentials — specifications for E51 camera-free, Mi 4i.
SpecificationE51 camera-freeMi 4i
Dimensions (HxWxD)
  • 114.8 Х 46 Х 12 mm
  • 138.1 Х 69.6 Х 7.8 mm
Weight
  • 100 g
  • 130 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2" inch
  • 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
  • 16/32 GB
  • 2 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
  • 3120 mAh
  • Non-removable Li-Ion
Operating system OS
  • Symbian OS 9.2
  • Series 60 v3.1 UI
  • Android 5.0.2 (Lollipop); MIUI 8.2
Chipset Unknown
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for E51 camera-free, Mi 4i.
SpecificationE51 camera-freeMi 4i
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 12.4 cm2
  • 68.9 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 23.5%
  • 71.7%
PPI /points per inch/
  • 200 PPI
  • 441 PPI
Screen protection Unknown
  • Corning scratch-resistant glass
Camera and Video
Camera and Video — specifications for E51 camera-free, Mi 4i.
SpecificationE51 camera-freeMi 4i
Rear camera, main
  • 0 MP,
  • 13 MP
  • Single
Camera specs Unknown
  • 13 MP
  • AF
  • f/2.0
Functions Unknown
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video Unknown
  • 1080p@30fps
  • 480p@120fps
Front camera, selfie
  • 0 MP,
  • 5 MP
  • Single
Specifications Unknown
  • 5 MP
  • f/1.8
Performance

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

Performance — specifications for E51 camera-free, Mi 4i.
SpecificationE51 camera-freeMi 4i
Processor CPU
  • 369 MHz ARM 11
  • Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Graphics processor GPU Unknown
  • Adreno 405
Antutu 7 score * Unknown
  • 40156
GeekBench 4 Single Core * Unknown
  • 617
GeekBench 4 Multi-Core * Unknown
  • 1374
GeekBench 4 RenderScript * Unknown
  • 1404
General specs
General specs — specifications for E51 camera-free, Mi 4i.
SpecificationE51 camera-freeMi 4i
Release date
  • 2008
  • February
  • 2015
  • April
Colors
  • Black
  • Silver
  • Dark Gray
  • Black
  • White
  • Yellow
  • Blue
  • Pink
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 130 EUR
  • 260 EUR
Battery life
  • Stand by time- Up to 310 h Talking time- Up to 4 h 20 min
  • Talking time- Up to 35 h (3G)
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for E51 camera-free, Mi 4i.
SpecificationE51 camera-freeMi 4i
SIM card
  • Mini-SIM
  • Dual SIM (Micro-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 -3G - HSDPA 850 / 1900 / 2100 TD-SCDMA -4G - LTE band 3(1800)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 3.6/0.384 Mbps
  • HSPA
  • LTE Cat4 150/50 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/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB 2.0
  • microUSB 2.0
  • USB Host
Bluetooth
  • 2.0
  • A2DP
  • 4.1
  • A2DP
Harmful irradiation
  • SAR - 1.47 W/kg (head) 0.75 W/kg (body) SAR EU - 1.38 W/kg (head)
  • SAR - 1.29 W/kg (head)
Music and Audio
Music and Audio — specifications for E51 camera-free, Mi 4i.
SpecificationE51 camera-freeMi 4i
Radio
  • FM radio
  • Stereo FM radio
Others
  • Five-way scroll key -Downloadable themes
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for E51 camera-free, Mi 4i.
SpecificationE51 camera-freeMi 4i
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 Accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging: 40% in 60 min (Quick Charge)