Nokia 6720 classic 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

    6720 classic: 20 g lighter

    6720 classic:
    110 g
    Mi 4i:
    130 g
  • Width

    6720 classic: 24.6 mm narrower

    6720 classic:
    45 mm
    Mi 4i:
    69.6 mm
  • Screen diagonal

    6720 classic: 2.8 in smaller diagonal

    6720 classic:
    2.2 in
    Mi 4i:
    5 in
  • Depth

    Mi 4i: 6.2 mm thinner

    6720 classic:
    14 mm
    Mi 4i:
    7.8 mm
  • Height

    6720 classic: 28.1 mm shorter

    6720 classic:
    110 mm
    Mi 4i:
    138.1 mm
  • Release year

    6720 classic:
    2009
    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. 6720 classic

    Height:
    110 mm
    Width:
    45 mm
    Depth:
    14 mm +6.2 mm versus Mi 4i
  2. 2. Mi 4i

    Height:
    138.1 mm +28.1 mm versus 6720 classic
    Width:
    69.6 mm +24.6 mm versus 6720 classic
    Depth:
    7.8 mm

Weight

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

  1. 1. 6720 classic

    110 g

  2. 2. Mi 4i

    130 g

    +20 g versus 6720 classic

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. 6720 classic

    Screen diagonal:
    2.2 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    15 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 359.8% more rectangular screen area than 6720 classic.

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 6720 classic, Mi 4i, compared at the same storage capacity.
Storage6720 classicMi 4i
16 GB Unknown 2 GB RAM
32 GB Unknown 2 GB RAM
6720 classic: Original memory entry

50 MB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. 6720 classic

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 16 GB (dedicated slot) · 1 GB included

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. 6720 classic

    1050 mAh

  2. 2. Mi 4i

    3120 mAh

    +2070 mAh versus 6720 classic

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. 6720 classic2. Mi 4i

Everyday essentials
Everyday essentials — specifications for 6720 classic, Mi 4i.
Specification6720 classicMi 4i
Dimensions (HxWxD)
  • 110 Х 45 Х 14 mm
  • 138.1 Х 69.6 Х 7.8 mm
Weight
  • 110 g
  • 130 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.2" 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.
  • 50 MB
  • 16/32 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 16 GB (dedicated slot)
  • 1 GB included
  • 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
  • S60 rel. 3.2
  • Android 5.0.2 (Lollipop); MIUI 8.2
Chipset Unknown
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for 6720 classic, Mi 4i.
Specification6720 classicMi 4i
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 15.0 cm2
  • 68.9 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 30.3%
  • 71.7%
PPI /points per inch/
  • 182 PPI
  • 441 PPI
Screen protection Unknown
  • Corning scratch-resistant glass
Camera and Video
Camera and Video — specifications for 6720 classic, Mi 4i.
Specification6720 classicMi 4i
Rear camera, main
  • 5 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 5 MP
  • AF
  • 13 MP
  • AF
  • f/2.0
Functions
  • Carl Zeiss optics
  • LED flash
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video
  • 480p@15fps
  • 1080p@30fps
  • 480p@120fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • QVGA videocall camera
  • 5 MP
  • f/1.8
Performance

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

Performance — specifications for 6720 classic, Mi 4i.
Specification6720 classicMi 4i
Processor CPU
  • 600 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 6720 classic, Mi 4i.
Specification6720 classicMi 4i
Release date
  • 2009
  • February
  • 2015
  • April
Colors
  • Titanium
  • Grey
  • Brown
  • Dark Gray
  • Black
  • White
  • Yellow
  • Blue
  • Pink
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 90 EUR
  • 260 EUR
Battery life
  • Stand by time- Up to 492 h (2G) / 504 h (3G) Talking time- Up to 8 h 30 min (2G) / 5 h (3G) Music play - Up to 27 h
  • Talking time- Up to 35 h (3G)
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for 6720 classic, Mi 4i.
Specification6720 classicMi 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 10.2/2 Mbps
  • HSPA
  • LTE Cat4 150/50 Mbps
GPRS
  • Class 32
  • Yes
Edge
  • Class 32
  • 296 / 178.8 kbits
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS; Nokia Maps 3.0
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB Host
Bluetooth
  • 2.0
  • A2DP
  • 4.1
  • A2DP
Harmful irradiation
  • SAR - 0.96 W/kg (head) 0.53 W/kg (body) SAR EU - 0.69 W/kg (head)
  • SAR - 1.29 W/kg (head)
Music and Audio
Music and Audio — specifications for 6720 classic, Mi 4i.
Specification6720 classicMi 4i
Radio
  • Stereo FM radio
  • RDS
  • Stereo FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for 6720 classic, Mi 4i.
Specification6720 classicMi 4i
Dop
  • WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Document viewer (Word
  • Excel
  • PowerPoint
  • PDF) -TV-out -Voice memo -Predictive text input
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging: 40% in 60 min (Quick Charge)