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Nokia E51 vs Nokia E61i

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

Better figure, where one is clearly better

NokiaE51NokiaE61i
Overview
Released20072007
Display
Screen size2″2.8″
Resolution320 × 240320 × 240
Sharpness200 pixels per inch143 pixels per inch
PanelLCDLCD
Display typeActive-matrix TFT with up to 16 million colours; ambient-light sensor2.8-inch non-touchscreen TFT LCD, 320 × 240 pixels and 16 million colours in GSMArena production test and IT Pro specifications.
Performance
Storage130 MB50 MB
MemoryUp to 130 MB user data storage in the maker specification sheet; physical RAM not verified in the exact maker sheet or guideNokia guide 9255175 lists up to 50 MB user memory and a 32-bit RISC ARM9 without clock or installed RAM. GSMArena and IT Pro list 60 MB user memory. Configuration uses the maker guide figure; storage is not physical RAM, which is omitted.
Storage typeHot-swappable microSD; maker brochure supports up to 4 GBHot-swappable microSD under removable rear cover in owner guide; IT Pro lists support up to 2 GB. GSMArena received no memory card in its test package.
Cameras
Main camera2 MP2 MP
Ultra wide cameraNoneNone
Telephoto cameraNoneNone
Optical zoomNoneNone
Main cameraFixed-focus 2 MP without flash in GSMArena's camera-equipped production test2 MP rear camera. Maker guide confirms up to 1600 × 1200 JPEG pictures, night mode, white balance, colour effects, six-picture sequence and self-timer.
Front camera–No secondary video-call camera in GSMArena test. No front-camera resolution inferred.
Video recordingQVGA 320 × 240 at 15 fps, MPEG-4 in GSMArena's exact testGSMArena reports up to 352 × 288 at 15 fps in MPEG-4 format; maker guide describes .3gpp clips without numerical frame rate.
Battery and charging
Battery1,050 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.Removable BP-4L. Maker guide 9255175 accessory chapter lists 970 mAh, conflicting with the 1500 mAh battery photographed and described in GSMArena production test. Headline capacity omitted pending resolution. GSMArena obtained six days of moderate mixed UMTS use, an attributed test rather than a standardised maker claim.
Wired chargingAC-5 charger through a separate small charger socket; miniUSB does not charge the phone in GSMArena's testDedicated bottom charger socket; maker guide lists AC-3/AC-4/AC-5 and CA-44 compatibility, plus CA-70 charging connectivity cable. No charging wattage or generic data-port charging claim inferred.
Design
TypeStandardStandard
Weight100 g153 g
Thickness12 mm13.9 mm
Height × width115 × 46 mm117 × 70 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.153 g and 117 × 70 × 11.5–13.9 mm in maker guide 9255175; headline uses maximum thickness. GSMArena and IT Pro list 150 g, retained as a source conflict.
MaterialsStainless-steel trim and rear battery cover, with plastic upper rear section–
ColoursBlack Steel, Pink Steel and White Steel–
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, Navi directional pad, email/phonebook/My Own shortcut keys and side volume/voice controls; GSMArena distinguishes these from the E61 joystick.
SpeakersFM Visual Radio and MP3/AAC music playback; no RDS in GSMArena's production testBuilt-in loudspeaker; Pop-Port wired audio. Original Bluetooth lacks stereo A2DP in production test.
Software
Operating systemSymbianSymbian
Software at launchSymbian OS 9.2 with S60 Third Edition Feature Pack 1Symbian 9.1a, S60 Third Edition in maker technical table. No Feature Pack 1 in GSMArena test.
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.–
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 12 February 2007 with Q2 availability planned. Nokia annual report confirms shipments during 2007; GSMArena production test was published 4 May. Earliest worldwide on-sale month remains unresolved, so year precision retained. No predecessor relation inferred without explicit maker wording.
Connectivity
Mobile networkEGSM 850/900/1800/1900 and WCDMA 850/2100; HSDPA up to 3.6 Mbit/sGSM 850/900/1800/1900 and UMTS 2100 in exact RM-227 maker guide. No HSDPA in GSMArena test.
Wi-FiIEEE 802.11g WLAN with internet callingIntegrated WLAN; maker table lists 802.11g/e/i. IT Pro lists 802.11b/g, WPA/WPA2 personal/enterprise.
BluetoothBluetooth 2.0; wireless stereo headset support in maker brochure and A2DP verified in GSMArena's production testBluetooth 1.2 in maker technical table. GSMArena confirms no A2DP stereo-headset support in original firmware.
USBminiUSB data connector and IrDA 115 kbit/s; 2.5 mm headset socket in TechRadar's testUSB 2.0 via Pop-Port in maker guide; IT Pro specifies Full-Speed, not Hi-Speed. GSMArena tested PC Suite, mass-storage and direct-print connection modes.
PositioningNo internal GPS in TechRadar's test; Nokia Maps can use an optional external receiver–

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