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Nokia E51 vs Nokia E55

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

NokiaE51NokiaE55
Overview
Released20072009
Display
Screen size2″2.4″
Resolution320 × 240320 × 240
Sharpness200 pixels per inch167 pixels per inch
PanelLCDLCD
Display typeActive-matrix TFT with up to 16 million colours; ambient-light sensor2.4-inch QVGA TFT with up to 16 million colours and automatic landscape rotation; non-touch. Size from maker announcement, resolution/type from exact GSMArena production review.
Performance
Memory–128 MB
CPU–600 MHz ARM11 in GSMArena's exact production review; specific chip identity not inferred
Storage130 MB–
MemoryUp to 130 MB user data storage in the maker specification sheet; physical RAM not verified in the exact maker sheet or guideGSMArena's production review lists 128 MB RAM and 60 MB internal storage; The Register gives 100 MB storage. Internal capacity omitted from headline configurations because the source conflict remains unresolved.
Storage typeHot-swappable microSD; maker brochure supports up to 4 GBExact owner guide supports microSD and microSDHC; production reviews include a supplied 2 GB card. The Register reports expansion up to 16 GB; card capacity is separate from internal memory.
Cameras
Main camera2 MP3.2 MP
Ultra wide cameraNoneNone
Telephoto cameraNoneNone
Optical zoomNoneNone
Main cameraFixed-focus 2 MP without flash in GSMArena's camera-equipped production test3.2 megapixel enhanced fixed-focus camera with LED flash; no autofocus. GSMArena tests limited close-up capability and resolution; The Register reports usable daylight snapshots.
Front camera–Secondary video-call camera in exact production reviews; resolution not inferred
Video recordingQVGA 320 × 240 at 15 fps, MPEG-4 in GSMArena's exact testVGA 640 × 480 at 15 fps in GSMArena's exact production review; panorama stitching is a separate still-photo mode
Battery and charging
Battery1,050 mAh1,500 mAh
Wireless chargingNoneNone
Battery life detailRemovable BP-6MT. Maker brochure gives 1050 mAh, up to 4.4 hours GSM talk and 13 days GSM standby. GSMArena itself inconsistently gives 1050 mAh in its package description and 1070 mAh in its battery section; headline retains the maker figure.Exact owner guide specifies BP-4L; GSMArena identifies its 1500 mAh Li-Po capacity and reports up to eight hours talk/672 hours standby. These are manufacturer claims reported by the review, not measured endurance or video playback; network conditions matter.
Wired chargingAC-5 charger through a separate small charger socket; miniUSB does not charge the phone in GSMArena's testCharges through the USB port using AC-10 charger or a compatible USB data cable. Exact guide says data-cable charging is slower and USB hubs may be incompatible; no wattage inferred.
Design
TypeStandardStandard
Weight100 g98 g
Thickness12 mm9.9 mm
Height × width115 × 46 mm116 × 49 mm
Weight detailMaker brochure gives 100 g and 115 × 47 × 12 mm. Headline width follows TechRadar's exact-model 46 mm and GSMArena's 114.8 × 46 × 12 mm production description; the brochure's 47 mm conflicts with both.98 g and 116 × 49 × 9.9 mm from GSMArena's exact production review; no dimensions or weight copied from E52
MaterialsStainless-steel trim and rear battery cover, with plastic upper rear section–
ColoursBlack Steel, Pink Steel and White SteelBlack Aluminium, White Aluminium and Red in GSMArena's exact model table; recovered press originals cover Black and White only
ButtonsNumeric keypad and five-way Navi key; one-touch email, contacts, calendar and home keys; side volume, mute and voice controls; email notification lightCompact 20-key QWERTY keyboard with two letters per key, predictive completion and correction; navigation, business shortcut, volume, voice-command and camera keys
SpeakersFM Visual Radio and MP3/AAC music playback; no RDS in GSMArena's production testMono loudspeaker, music player and FM radio with RDS; wired headphones supply the radio antenna
Software
Operating systemSymbianSymbian
Software at launchSymbian OS 9.2 with S60 Third Edition Feature Pack 1Symbian OS with S60 Third Edition Feature Pack 2 in exact production reviews
Software featuresQuickoffice document viewing, PDF reader, ZIP manager, Team Suite and Active notes. Maker brochure mentions attachment editors, but supplied Quickoffice does not edit in GSMArena's production test; editing requires the separate editor version. Historical enterprise email and internet-call services may no longer operate.Microsoft Exchange and Lotus Notes email/calendar/contacts in maker announcement. Both production reviews test supplied Quickoffice editing; owner guide describes the editor-version requirement. GSMArena says N-Gage is supported but not preinstalled on its retail unit; online downloads may no longer exist.
Release detailAnnounced 18 September 2007 with planned fourth-quarter availability; Nokia's actual fourth-quarter results confirm first shipments during that quarter. Earliest retail month unresolved, so year precision retained. E50 comparison remains available without an inferred manufacturer successor link.Maker announced E55 on 16 February 2009 with planned second-quarter shipments. Nokia's 2009 annual sustainability report confirms E55 among products launched during the year; earliest maker-backed actual retail month unresolved, so retain year precision rather than the planned quarter or a secondary August date.
Connectivity
Mobile networkEGSM 850/900/1800/1900 and WCDMA 850/2100; HSDPA up to 3.6 Mbit/sQuad-band GSM 850/900/1800/1900; GSMArena exact model table lists regional HSDPA 900/1900/2100 or US 850/1900/2100. Production review reports HSDPA up to 10.2 Mbps and HSUPA up to 2 Mbps; regional bands are not one combined radio.
Wi-FiIEEE 802.11g WLAN with internet callingIEEE 802.11b/g and UPnP/Home media in exact GSMArena production review
BluetoothBluetooth 2.0; wireless stereo headset support in maker brochure and A2DP verified in GSMArena's production testBluetooth 2.0 + EDR in exact owner guide; A2DP stereo and AVRCP, hands-free/headset, file-transfer and SIM-access profiles among those documented
USBminiUSB data connector and IrDA 115 kbit/s; 2.5 mm headset socket in TechRadar's testMicro-USB 2.0 in exact GSMArena production review; standard 3.5 mm audio connector
PositioningNo internal GPS in TechRadar's test; Nokia Maps can use an optional external receiverIntegrated A-GPS and digital compass. Production review tests Ovi Maps 3.0 and its original navigation trials; historical online services/licences may no longer operate.

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