Nokia E61i vs Nokia E66

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E61i compared with E66

	NokiaE61i	NokiaE66
Overview
Released
Released	2007	2008
Display
Screen size
Screen size	2.8″	2.4″
Resolution
Resolution	320 × 240	320 × 240
Sharpness
Sharpness	143 pixels per inch	167 pixels per inch (better)
Panel
Panel	LCD	LCD
Display type
Display type	2.8-inch non-touchscreen TFT LCD, 320 × 240 pixels and 16 million colours in GSMArena production test and IT Pro specifications.	2.4-inch 320 × 240 LCD with up to 16 million colours in the maker datasheet; TFT identified in GSMArena's production test. The physical screen is portrait-oriented; resolution is stored long side first for comparison.
Display features
Display features	–	Ambient light sensor and accelerometer-driven portrait/landscape rotation; non-touchscreen
Performance
Chip
Chip	–	ARM11 369 MHz (GSMArena)
Memory
Memory	–	128 MB
Storage
Storage	50 MB	110 MB (better)
CPU
CPU	–	369 MHz ARM11 processor identified by GSMArena's exact-model production review
Memory
Memory	Nokia 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.	128 MB installed SDRAM from GSMArena, distinct from free application memory. Maker publishes up to 110 MB internal user memory; the configuration records that user-accessible capacity.
Storage type
Storage type	Hot-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.	microSD expansion up to 8 GB in the maker launch sheet; optional card capacity is not built-in storage
Cameras
Main camera
Main camera	2 MP	3.2 MP (better)
Ultra wide camera
Ultra wide camera	None	None
Telephoto camera
Telephoto camera	None	None
Optical zoom
Optical zoom	None	None
Main camera
Main camera	2 MP rear camera. Maker guide confirms up to 1600 × 1200 JPEG pictures, night mode, white balance, colour effects, six-picture sequence and self-timer.	3.2 MP autofocus camera with LED flash; maker gives up to 2048 × 1536 still pixels
Front camera
Front camera	No secondary video-call camera in GSMArena test. No front-camera resolution inferred.	Front camera for video calls confirmed by maker; no sensor megapixel figure inferred
Video recording
Video recording	GSMArena reports up to 352 × 288 at 15 fps in MPEG-4 format; maker guide describes .3gpp clips without numerical frame rate.	Maker specifies QVGA video; GSMArena's production test records 320 × 240 at 15 fps
Camera features
Camera features	–	Dedicated shutter key; scene, white-balance, exposure, self-timer and sequence controls in GSMArena's production test. Its tested software does not geotag photos.
Battery and charging
Battery
Battery	–	1,000 mAh
Wireless charging
Wireless charging	None	None
Battery life detail
Battery life detail	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.	Removable BL-4U 1000 mAh Li-Ion. Maker maxima are 7.5 hours GSM or 3.5 hours WCDMA talk, and 11 days GSM or 14 days WCDMA standby. These are network operating conditions, not video-playback claims. GSMArena's stationary GPS/display-on test lasts six hours.
Wired charging
Wired charging	Dedicated 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.	Separate charging connector; compatible Nokia charger. No charging wattage published in the maker datasheet; micro-USB data support does not establish USB charging.
Design
Type
Type	Standard	Standard
Weight
Weight	153 g	121 g (better)
Thickness
Thickness	13.9 mm	13 mm (better)
Height × width
Height × width	117 × 70 mm	107 × 49 mm
Weight detail
Weight detail	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.	Maker launch sheet rounds size to 107 × 49 × 13 mm and gives 121 g. GSMArena measures/lists 107.5 × 49.5 × 13.6 mm; that greater precision is review evidence, not a silently substituted maker claim.
Materials
Materials	–	Stainless-steel rear cover and slider body; numeric keypad slides out below the display. This is a mechanical slider, not a folding or flexible-display phone.
Colours
Colours	–	Grey Steel and White Steel in original maker launch sheet; regional availability varies
Buttons
Buttons	QWERTY keyboard, Navi directional pad, email/phonebook/My Own shortcut keys and side volume/voice controls; GSMArena distinguishes these from the E61 joystick.	Numeric keypad, navigation control and one-touch Home, Calendar, Contacts and Email keys; dedicated shutter and side volume controls
Sensors
Sensors	–	Accelerometer and ambient light sensor
Speakers
Speakers	Built-in loudspeaker; Pop-Port wired audio. Original Bluetooth lacks stereo A2DP in production test.	Built-in loudspeaker and FM/Visual Radio; GSMArena reports no RDS. Compatible wired headset serves as radio antenna.
Software
Operating system
Operating system	Symbian	Symbian
Software at launch
Software at launch	Symbian 9.1a, S60 Third Edition in maker technical table. No Feature Pack 1 in GSMArena test.	Symbian OS 9.2, S60 Third Edition Feature Pack 1, identified by GSMArena's production review
Software features
Software features	–	Business/personal home-screen profiles; Mail for Exchange, Nokia Intellisync and POP/IMAP email. PDF reader, ZIP manager and office-document viewing; editing required a Quickoffice upgrade in GSMArena's test, whereas TechRadar describes document creation. Exact tested software/upgrade status differs between reports. Historical online services may no longer operate.
Release detail
Release detail	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.	Announced 16 June 2008 alongside E71, with July shipments forecast. Nokia's 2008 annual report confirms actual E66 shipments during that year; earliest worldwide retail month remains unresolved. No speculative E65 predecessor relation added while that model is absent.
In the box
In the box	–	GSMArena's tested package contains a compact charger, 2.5 mm headset, leather case and 2 GB microSD card with maps; regional contents may differ
Connectivity
Mobile network
Mobile network	GSM 850/900/1800/1900 and UMTS 2100 in exact RM-227 maker guide. No HSDPA in GSMArena test.	Quad-band GSM/EGSM 850/900/1800/1900; separate WCDMA 900/2100, 850/2100 and 850/1900 variants, not one five-band handset. HSDPA up to 3.6 Mbps; WCDMA up to 384 kbps down/up. No LTE.
Wi-Fi
Wi-Fi	Integrated WLAN; maker table lists 802.11g/e/i. IT Pro lists 802.11b/g, WPA/WPA2 personal/enterprise.	IEEE 802.11b/g
Bluetooth
Bluetooth	Bluetooth 1.2 in maker technical table. GSMArena confirms no A2DP stereo-headset support in original firmware.	Bluetooth 2.0 with EDR and A2DP stereo audio
USB
USB	USB 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.	Micro-USB and infrared; separate 2.5 mm AV/headset connector. GSMArena describes USB 2.0 compatibility; no Hi-Speed rate inferred from that label.
Positioning
Positioning	–	Built-in GPS with assisted GPS and Nokia Maps; original reviews describe temporary/subscription-based voice guidance. Historical online map services are not promised available today.