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  2. Nokia E51 vs ZTE X990

Nokia E51 vs ZTE X990

Compare recorded specifications, size and practical differences.

Nokia E51

Nokia E51

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    ZTE X990

    ZTE X990

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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.

        • WeightX990: 10 g lighterX990: 90 g · E51: 100 g
        • WidthE51: 15 mm narrowerE51: 46 mm · X990: 61 mm
        • Screen diagonalE51: 0.5 in smaller diagonalE51: 2 in · X990: 2.5 in
        • HeightX990: 7.8 mm shorterX990: 107 mm · E51: 114.8 mm
        • Release year2007 / 2010E51: 2007 · X990: 2010

        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.

        Front
        E51: 114.8 × 46 mm 1 X990: 107 × 61 mm 2
        Side
        E51: 114.8 × 12 mm 1 X990: 107 × 12 mm 2
        1. 1. E51
          Height
          114.8 mm
          Width
          46 mm
          Depth
          12 mm
          Weight
          100 g
        2. 2. X990
          Height
          107 mm
          Width
          61 mm
          Depth
          12 mm
          Weight
          90 g

        Specifications

        Open a section for more detail. Scroll inside a table to keep phone names visible; on narrow screens, swipe sideways or use the arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

        Everyday essentials
        Everyday essentials
        SpecificationE51X990
        Dimensions (HxWxD)
        • 114.8 Х 46 Х 12 mm
        • 107 Х 61 Х 12 mm
        Weight
        • 100 g
        • 90 g
        Technology
        • TFT
        • TFT
        Screen size
        • 2" inch
        • 2.5" inch
        Screen resolution
        • 240 x 320 px
        • 320 x 240 px
        Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
        • 130 MB
        • 96 MB RAM
        • 5 MB
        Memory card support
        • microSD
        • up to 16 GB (dedicated slot)
        • microSD
        • up to 8 GB (dedicated slot)
        BatteryCapacity is not battery life. No endurance test is implied.
        • 1050 mAh
        • Removable Li-Ion
        • 0 mAh,
        Operating system OS
        • Symbian OS 9.2
        • Series 60 v3.1 UI
        • Microsoft Windows Mobile 6.5 Professional
        Headphone jack
        • No
        • No
        Display
        Display
        SpecificationE51X990
        Touchscreen Unknown
        • resistive touchscreen
        Display colors
        • 16M
        • 256K
        Screen area
        • 12.4 cm2
        • 19.4 cm2
        Screen format
        • 4:3 (height:width)
        • 4:3 (height:width)
        Screen to body ratio
        • 23.5%
        • 29.7%
        PPI /points per inch/
        • 200 PPI
        • 160 PPI
        Camera and Video
        Camera and Video
        SpecificationE51X990
        Rear camera, main
        • 2 MP
        • Single
        • 2 MP
        • Single
        Camera specs
        • 2 MP
        • 2 MP
        Video
        • 320p@15fps
        • Yes
        Front camera, selfie
        • 0 MP,
        • 0 MP,
        Performance
        Performance
        SpecificationE51X990
        Processor CPU
        • 369 MHz ARM 11
        		 Unknown
        General specs
        General specs
        SpecificationE51X990
        Release date
        • 2007
        • September
        • 2010
        • March
        Colors
        • Black
        • Silver
        • White
        Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
        • 120 EUR
        		 Unknown
        Battery life
        • Stand by time- Up to 310 h Talking time- Up to 4 h 20 min
        • Stand by time- Up to 480 h Talking time- Up to 8 h
        Communication and Connectivity
        Communication and Connectivity
        SpecificationE51X990
        SIM card
        • Mini-SIM
        • Mini-SIM
        Network
        • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
        		 Unknown
        Speed
        • HSPA 3.6/0.384 Mbps
        		 Unknown
        GPRS
        • Class 32
        • Class 10
        Edge
        • Class 32
        • Class 10
        Wi-Fi
        • Wi-Fi 802.11b/g
        • VoIP over WLAN
        • No
        GPS
        • No
        • No
        USB
        • miniUSB 2.0
        • microUSB 2.0
        Bluetooth
        • 2.0
        • A2DP
        • 2.0
        • A2DP
        Harmful irradiation
        • SAR - 1.38 W/kg (head) 0.75 W/kg (body) SAR EU - 1.47 W/kg (head)
        • SAR EU - 0.96 W/kg (head)
        Music and Audio
        Music and Audio
        SpecificationE51X990
        Radio
        • FM radio
        • Stereo FM radio
        • RDS
        Others
        • Five-way scroll key -Downloadable themes
        • 2.5 mm audio jack
        		 Unknown
        Other features
        Other features
        SpecificationE51X990
        Dop
        • Infrared port - Push to talk -WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Document viewer (Word
        • Excel
        • PowerPoint
        • PDF) incl. MS Office 2007 support via free update -Predictive text input -Voice command/memo -Organizer
        • Windows Live Messenger -MP3/WMA/eAAC+ player -MP4/H.264 player -MS Office -Organizer -Voice memo -Predictive text input Also known as Messenger by SFR 251 Edition