Nokia E51 camera-free vs Xiaomi Mi 9 Explorer

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: 73 g lighter

    E51 camera-free:
    100 g
    Mi 9 Explorer:
    173 g
  • Width

    E51 camera-free: 28.7 mm narrower

    E51 camera-free:
    46 mm
    Mi 9 Explorer:
    74.7 mm
  • Screen diagonal

    E51 camera-free: 4.39 in smaller diagonal

    E51 camera-free:
    2 in
    Mi 9 Explorer:
    6.39 in
  • Depth

    Mi 9 Explorer: 4.4 mm thinner

    E51 camera-free:
    12 mm
    Mi 9 Explorer:
    7.6 mm
  • Height

    E51 camera-free: 42.7 mm shorter

    E51 camera-free:
    114.8 mm
    Mi 9 Explorer:
    157.5 mm
  • Release year

    E51 camera-free:
    2008
    Mi 9 Explorer:
    2019

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 +4.4 mm versus Mi 9 Explorer
  2. 2. Mi 9 Explorer

    Height:
    157.5 mm +42.7 mm versus E51 camera-free
    Width:
    74.7 mm +28.7 mm versus E51 camera-free
    Depth:
    7.6 mm

Weight

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

  1. 1. E51 camera-free

    100 g

  2. 2. Mi 9 Explorer

    173 g

    +73 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 9 Explorer

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

Mi 9 Explorer has approximately 709.2% 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

Mi 9 Explorer: Original memory entry

256 GB · 8/12 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 camera-free

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

2. Mi 9 Explorer

NFC:
Yes
Headphone jack:
No
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 9 Explorer

    3300 mAh

    +2250 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 9 Explorer

Everyday essentials
Everyday essentials — specifications for E51 camera-free, Mi 9 Explorer.
SpecificationE51 camera-freeMi 9 Explorer
Dimensions (HxWxD)
  • 114.8 Х 46 Х 12 mm
  • 157.5 Х 74.7 Х 7.6 mm
Weight
  • 100 g
  • 173 g
Technology
  • TFT
  • Super AMOLED
Screen size
  • 2" inch
  • 6.39" 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
  • 256 GB
  • 8/12 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
  • 3300 mAh
  • Non-removable Li-Po
Operating system OS
  • Symbian OS 9.2
  • Series 60 v3.1 UI
  • Android 9.0 (Pie); MIUI 10
Chipset Unknown
  • Qualcomm SDM855 Snapdragon 855 (7 nm)
NFC Unknown
  • Yes
Headphone jack
  • No
  • No
Display
Display — specifications for E51 camera-free, Mi 9 Explorer.
SpecificationE51 camera-freeMi 9 Explorer
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 12.4 cm2
  • 100.2 cm2
Screen format
  • 4:3 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 23.5%
  • 85.2%
PPI /points per inch/
  • 200 PPI
  • 403 PPI
Screen protection Unknown
  • Corning Gorilla Glass 6
Camera and Video
Camera and Video — specifications for E51 camera-free, Mi 9 Explorer.
SpecificationE51 camera-freeMi 9 Explorer
Rear camera, main
  • 0 MP,
  • 48 MP
  • Triple
Camera specs Unknown
  • 48 MP
  • f/1.5 (12GB RAM model) or f/1.8 (8GB RAM model)
  • (wide)
  • 1/2"
  • 0.8µm
  • PDAF
  • Laser AF - 12 MP
  • f/2.2
  • 54mm (telephoto)
  • 1/3.6"
  • 1.0µm
  • laser AF
  • 2x optical zoom - 16 MP
  • 13mm (ultrawide)
  • 1/3.0"
Functions Unknown
  • HDR
Video Unknown
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 20 MP
  • Single
Specifications Unknown
  • 20 MP
  • f/2.0
  • 0.9μm
Performance
Performance — specifications for E51 camera-free, Mi 9 Explorer.
SpecificationE51 camera-freeMi 9 Explorer
Processor CPU
  • 369 MHz ARM 11
  • Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485)
Graphics processor GPU Unknown
  • Adreno 640
General specs
General specs — specifications for E51 camera-free, Mi 9 Explorer.
SpecificationE51 camera-freeMi 9 Explorer
Release date
  • 2008
  • February
  • 2019
  • February
Colors
  • Black
  • Silver
  • Transparent Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 130 EUR
  • 530 EUR
Battery life
  • Stand by time- Up to 310 h Talking time- Up to 4 h 20 min
Unknown
Body build Unknown
  • Back glass (Gorilla Glass 5)
  • aluminum frame (7000 series)
Communication and Connectivity
Communication and Connectivity — specifications for E51 camera-free, Mi 9 Explorer.
SpecificationE51 camera-freeMi 9 Explorer
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 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 12(700)
  • 17(700)
  • 20(800)
  • 28(700)
  • 38(2600)
  • 39(1900)
  • 40(2300)
Speed
  • HSPA 3.6/0.384 Mbps
  • HSPA
  • LTE-A
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
  • Wi-Fi Direct
  • DLNA
  • hotspot
GPS
  • No
  • Yes
  • with dual-band A-GPS
  • GLONASS
  • BDS
  • GALILEO
  • QZSS
USB
  • miniUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 2.0
  • A2DP
  • 5.0
  • A2DP
  • LE
  • aptX HD
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, Mi 9 Explorer.
SpecificationE51 camera-freeMi 9 Explorer
Radio
  • FM radio
  • No
Others
  • Five-way scroll key -Downloadable themes
  • HDR10 -DCI-P3
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for E51 camera-free, Mi 9 Explorer.
SpecificationE51 camera-freeMi 9 Explorer
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 (under display)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast battery charging 27W (Quick Charge 4+) -Fast wireless charging 20W - Also known as Xiaomi Mi 9 Transparent Edition