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Nokia E51 vs Nokia E72

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

Better figure, where one is clearly better

NokiaE51NokiaE72
Overview
Released2007November 2009
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 sensorMaker specifies a 2.4-inch QVGA screen, 320 × 240 pixels and up to 16 million colours; non-touchscreen LCD confirmed by production reviews. GSMArena gives 2.36 inches, differing from the maker headline.
Performance
Chip–ARM11 600 MHz (GSMArena)
Memory–128 MB
Storage130 MB250 MB
CPU–600 MHz ARM11 processor identified by GSMArena in its full production review.
MemoryUp to 130 MB user data storage in the maker specification sheet; physical RAM not verified in the exact maker sheet or guide128 MB installed SDRAM from GSMArena. Maker specifies up to 250 MB internal user storage; physical RAM and ROM are different quantities.
Storage typeHot-swappable microSD; maker brochure supports up to 4 GBmicroSD expansion up to 16 GB in maker sheet; included 4 GB card varies by market and is not internal storage.
Cameras
Main camera2 MP5 MP
Ultra wide cameraNoneNone
Telephoto cameraNoneNone
Optical zoomNoneNone
Main cameraFixed-focus 2 MP without flash in GSMArena's camera-equipped production test5 MP autofocus camera with LED flash; up to 2592 × 1944 still pixels in maker sheet.
Front camera–Front VGA video-call camera in maker sheet; sensor megapixels are not inferred from video resolution.
Video recordingQVGA 320 × 240 at 15 fps, MPEG-4 in GSMArena's exact testMaker specifies VGA video. Both production reviews tested 640 × 480 at 15 fps; frame rate is review evidence.
Camera features–Touch the optical navigation key to focus, then press it to capture. Exact owner guide describes flash, scenes, sequence, self-timer, colour tone and white-balance controls. No dedicated camera key.
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.User-replaceable BP-4L 1500 mAh Li-Po. Maker maxima: 12.5 hours GSM or 6 hours WCDMA talk, and 20 days GSM or 24 days WCDMA standby; conditions differ from video playback.
Wired chargingAC-5 charger through a separate small charger socket; miniUSB does not charge the phone in GSMArena's testSeparate charger connector and USB charging. Owner guide warns USB charging can be slower and some hubs incompatible; simultaneous data transfer is supported. No charging wattage published in these maker sources.
Design
TypeStandardStandard
Weight100 g128 g
Thickness12 mm10 mm
Height × width115 × 46 mm114 × 58 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.Maker specifies 128 g and 114 × 58 × 10 mm.
MaterialsStainless-steel trim and rear battery cover, with plastic upper rear sectionStainless steel and aluminium in maker sheet; patterned metal rear cover.
ColoursBlack Steel, Pink Steel and White SteelZodium Black, Metal Grey and Topaz Brown in original maker sheet. White edition confirmed by maker in April 2010. Regional purple photographs are credited separately; no worldwide finish availability inferred.
ButtonsNumeric keypad and five-way Navi key; one-touch email, contacts, calendar and home keys; side volume, mute and voice controls; email notification lightQWERTY keyboard, optical Navi key and one-touch Home, Calendar, Contacts and Email keys; side volume controls and torch function.
SpeakersFM Visual Radio and MP3/AAC music playback; no RDS in GSMArena's production testBuilt-in loudspeaker and FM radio; RDS confirmed in GSMArena production review. Compatible wired headset serves as radio antenna.
Software
Operating systemSymbianSymbian
Software at launchSymbian OS 9.2 with S60 Third Edition Feature Pack 1Symbian OS 9.3, S60 Third Edition Feature Pack 2, identified by full 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.Maker specifies Quickoffice 5.3 with Office 2007 support, Mail for Exchange, IBM Lotus Notes support, Nokia Messaging, mobile VPN and remote lock/wipe. GSMArena tested included office-document editing. Later firmware added internet radio. Historical apps and online services may no longer be available.
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.Announced 15 June 2009 with late-Q3 availability planned; later maker sheet instead states Q4. Maker article of 16 November 2009 says the E72 is now in stores globally; retain November precision rather than infer the earliest worldwide day. Maker retrospective explicitly identifies E72 as the successor to E71.
Connectivity
Mobile networkEGSM 850/900/1800/1900 and WCDMA 850/2100; HSDPA up to 3.6 Mbit/sQuad-band GSM/EGSM 850/900/1800/1900. Separate WCDMA 850/1900/2100 and 900/1900/2100 variants in maker sheet, not one four-band model. HSDPA up to 10.2 Mbps and HSUPA up to 2 Mbps; no LTE.
Wi-FiIEEE 802.11g WLAN with internet callingIEEE 802.11b/g in maker sheet.
BluetoothBluetooth 2.0; wireless stereo headset support in maker brochure and A2DP verified in GSMArena's production testBluetooth 2.0 with EDR and A2DP stereo audio.
USBminiUSB data connector and IrDA 115 kbit/s; 2.5 mm headset socket in TechRadar's testHi-Speed USB in maker sheet; micro-USB connector and 3.5 mm headset socket confirmed by exact guide.
PositioningNo internal GPS in TechRadar's test; Nokia Maps can use an optional external receiverGPS, assisted GPS and digital compass. Original launch included lifetime walking navigation and ten one-day driving trials; April 2010 maker firmware announcement added free walking and driving navigation. Historical network services are not promised available today.

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