Motorola ROKR E6 vs ZTE N721

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

    N721: 16 g lighter

    ROKR E6:
    121 g
    N721:
    105 g
  • Width

    ROKR E6: 4.7 mm narrower

    ROKR E6:
    51.5 mm
    N721:
    56.2 mm
  • Screen diagonal

    ROKR E6: 0.4 in smaller diagonal

    ROKR E6:
    2.4 in
    N721:
    2.8 in
  • Height

    N721: 5 mm shorter

    ROKR E6:
    111 mm
    N721:
    106 mm
  • Release year

    ROKR E6:
    2006
    N721:
    2011

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. ROKR E6

    Height:
    111 mm +5 mm versus N721
    Width:
    51.5 mm
    Depth:
    14.5 mm
  2. 2. N721

    Height:
    106 mm
    Width:
    56.2 mm +4.7 mm versus ROKR E6
    Depth:
    14.2 mm

Weight

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

  1. 1. ROKR E6

    121 g

    +16 g versus N721

  2. 2. N721

    105 g

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. ROKR E6

    Screen diagonal:
    2.4 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    17.8 cm²
  2. 2. N721

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²

N721 has approximately 36.1% more rectangular screen area than ROKR E6.

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.

ROKR E6: Original memory entry

8 MB

N721: Original memory entry

150 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. ROKR E6

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details SD · up to 2 GB

2. N721

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated 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. ROKR E6

    1000 mAh

  2. 2. N721

    1100 mAh

    +100 mAh versus ROKR E6

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. ROKR E62. N721

Everyday essentials
Everyday essentials — specifications for ROKR E6, N721.
SpecificationROKR E6N721
Dimensions (HxWxD)
  • 111 Х 51.5 Х 14.5 mm
  • 106 Х 56.2 Х 14.2 mm
Weight
  • 121 g
  • 105 g
Technology
  • TFT
  • TFT
Screen size
  • 2.4" inch
  • 2.8" inch
Screen resolution
  • 240 x 320 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 MB
  • 150 MB
Memory card support
  • SD
  • up to 2 GB
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1000 mAh
  • Removable Li-Ion
  • 1100 mAh
  • Removable Li-Ion
Operating system OS
  • Linux
  • Android OS
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for ROKR E6, N721.
SpecificationROKR E6N721
Touchscreen
  • resistive touchscreen
  • touchscreen
Display colors
  • 256K
  • 256K
Screen area
  • 17.8 cm2
  • 24.3 cm2
Screen format
  • 4:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 31.2%
  • 40.8%
PPI /points per inch/
  • 167 PPI
  • 143 PPI
Camera and Video
Camera and Video — specifications for ROKR E6, N721.
SpecificationROKR E6N721
Rear camera, main
  • 2 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 2 MP
  • 2 MP
Video
  • CIF
  • Yes
Front camera, selfie
  • 0 MP,
  • 0 MP,
Performance
Performance — specifications for ROKR E6, N721.
SpecificationROKR E6N721
Processor CPU
  • 32-bit Intel XScale PXA270 312 MHz
Unknown
General specs
General specs — specifications for ROKR E6, N721.
SpecificationROKR E6N721
Release date
  • 2006
  • December
  • 2011
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 140 EUR
Unknown
Battery life
  • Stand by time- Up to 235 h Talking time- Up to 7 h
  • Stand by time- Up to 250 h Talking time- Up to 4 h 10 min
Communication and Connectivity
Communication and Connectivity — specifications for ROKR E6, N721.
SpecificationROKR E6N721
SIM card
  • Mini-SIM
  • Mini-SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 900 / 1800
Speed Unknown
  • HSPA 7.2/0.384 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 b/g
GPS
  • No
  • Yes
  • with A-GPS
USB
  • 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • A2DP
  • 2.1
Harmful irradiation Unknown
  • SAR EU - 0.73 W/kg (head)
Music and Audio
Music and Audio — specifications for ROKR E6, N721.
SpecificationROKR E6N721
Radio
  • FM radio
Unknown
Other features
Other features — specifications for ROKR E6, N721.
SpecificationROKR E6N721
Dop
  • Document viewer (Word
  • Excel
  • PowerPoint
  • PDF) -MP4/MP3 player -Business card scanner -Organizer
  • Sensors Accelerometer MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -Voice memo -Predictive text input