The Nokia N900 is a smartphone made by Nokia

GENERAL	2G Network	GSM 850 / 900 / 1800 / 1900
	3G Network	HSDPA 900 / 1700 / 2100
	Announced	2009, August
	Status	Available. Released 2009, November

SIZE	Dimensions	110.9 x 59.8 x 18 mm, 113 cc
	Weight	181 g

DISPLAY	Type	TFT resistive touchscreen, 65K colors
	Size	800 x 480 pixels, 3.5 inches
		- QWERTY keyboard - Proximity sensor for auto turn-off - Accelerometer sensor for auto-rotate

SOUND	Alert types	Vibration; MP3 ringtones
	Loudspeaker	Yes, with stereo speakers
	3.5mm jack	Yes, check quality

MEMORY	Phonebook	Practically unlimited entries and fields, Photocall
	Call records	Detailed, max 30 days
	Internal	32 GB storage, 256 MB RAM
	Card slot	microSD, up to 16GB, buy memory

DATA	GPRS	Class 32
	EDGE	Class 32
	3G	HSDPA, 10Mbps; HSUPA, 2Mbps
	WLAN	Wi-Fi 802.11 b/g, DLNA
	Bluetooth	Yes, v2.1 with A2DP
	Infrared port	Yes
	USB	Yes, v2.0 microUSB

CAMERA	Primary	5 MP, 2576x1936 pixels, Carl Zeiss optics, autofocus, Dual LED flash, check quality
	Features	Geo-tagging
	Video	Yes, WVGA(848 x 480)@25fps
	Secondary	Yes, VGA

FEATURES	OS	Maemo 5
	CPU	ARM Cortex A8 600 MHz, PowerVR SGX530 graphics
	Messaging	SMS (threaded view), Email, Push Email, IM
	Browser	xHTML, HTML, RSS feeds
	Radio	Stereo FM radio (via third party software); FM transmitter
	Games	Yes, 5 + downloadable
	Colors	Black
	GPS	Yes, with A-GPS support; Ovi Maps
	Java	No
		- Skype and GoogleTalk VoIP integration - MP3/WMA/WAV/eAAC+ music player - WMV/RealVideo/MP4/AVI/XviD/DivX video player - TV-out - PDF document viewer - Photo editor - Adobe Flash Player 9.4

BATTERY		Standard battery, Li-Ion 1320 mAh (BL-5J)
	Stand-by	Up to 278 h (2G) / Up to 250 h (3G)
	Talk time	Up to 6 h 30 min (2G) / Up to 4 h 30 min (3G)
	Music play	Up to 24 h 30 min

MISC	SAR US	0.92 W/kg (head)     0.82 W/kg (body)
	SAR EU	0.80 W/kg (head)

The Nokia N900 is a smartphone made by Nokia.[5] It supersedes the Nokia N810. Its default operating system, Maemo 5, is a Linux-based OS originally developed for the Nokia 770 Internet Tablet. It is the first Nokia device based upon the Texas Instruments OMAP3 microprocessor with the ARM Cortex-A8 core. Unlike the three Nokia Internet tablets preceding it, the Nokia N900 is the first Maemo device to include phone functionality (quad-band GSM and 3G UMTS/HSDPA).[6]

The N900 functions as a mobile Internet device, and includes e-mail, web browsing and access to online services, a 5 mega pixel digital camera for still or video photography, a portable media player for music and video, calculator, games console and text processor, SMS, as well as mobile telephony using either a mobile network or VoIP via Internet (mobile or Wi-Fi).[7] Maemo provides an X-terminal interface for interacting with the core operating system.

It was launched at Nokia World on September 2, 2009 and was released on November 11, 2009 in the United States and 9 European countries.

The N900 was launched alongside Maemo 5, giving the device an overall more touch-friendly interface than its predecessors and a customizable home screen which mixes application icons with shortcuts and widgets. Maemo 5 supports Adobe Flash Player 9.4, and includes many applications designed specifically for the mobile platform such as a new touch-friendly media player.[8]

History and availability

The Nokia N900 was announced on September 17, 2008 during a keynote presentation by Dr. Ari Jaaksi of Nokia. New supported features were announced for Maemo 5 such as cellular connectivity over 3G/HSPA, TI OMAP3 processor and high definition camera support. No news on backward compatibility for older Internet Tablets and no time frame was established.[10] The release of the pre-alpha Maemo 5 software development kit, in December 2008[11] targeted exclusively the OMAP3 architecture, revamped the user interface, included support for hardware graphics acceleration and other functionalities not found in Internet Tablets at the time such as cellular data connectivity and high definition camera support.

The first photo and specifications of the N900, codenamed Rover while being developed, came out in May 2009.[12][13] The release of FCC approval documents in August 2009 confirmed the device and provided the second codename RX-51.[14][15][16] The Nokia N900 was officially announced on 2 September 2009 at Nokia World 2009 in Germany. Nokia says it is step 4 of 5 in the line of Maemo devices which started in 2005 with the Nokia 770.[17]

The device was initially available in selected markets starting November 2009 (4 December in the UK)[18] with a retail price of €599 in Finland,[19] Germany,[20] Italy,[21] Netherlands[22] and Spain,[23] €649 in France,[24] 2499 zł in Poland,[25] 5995 kr [26] in Sweden and £499[27] in the United Kingdom, all prices including VAT but excluding subsidies. The retail price at launch was US$649 in the United States excluding sales taxes and subsidies.[1][28] It will be available in Canada through independent retailers for around C$800.[29][30] As of March 2010 the Nokia site in Australia lists the N900 on the homepage, hinting at launch some time in the near future.[31][32] Black was the only color available at launch. Initially, availability was extremely limited, leading to further delays. The statement from Nokia was that there was higher pre-order demand than expected.[33] The Nokia N900 launched in Hong Kong on 29 May 2010, with added features to facilitate character handwriting input. Price at launch was 4998 HKD.[34] It has already been released to Australia via Optus.

Hardware Processors

The Nokia N900 is powered by a high-end OMAP 3430 ARM Cortex A8 which is a System-on-a-chip made by Texas Instruments based on a 65 nanometer CMOS process. The OMAP 3430 is composed of three microprocessors; the Cortex A8 running at 600 MHz (up to 1.15 GHz with good overclocking) used to run the OS and applications, the PowerVR SGX 530 GPU made by Imagination Technologies which supports OpenGL ES 2.0 and is capable of up to 14 MPolys/s and a TMS320C64x, the digital signal processors, running at 430 MHz used to run the image processing (camera), audio processing (telephony) and data transmission. The TMS320 C64x main purpose is to offload the Cortex A8 from having to process audio and video signal.[35] Moreover the OMAP 3430 on some N900 devices has been successfully over-clocked up to 1150 MHz by using a modified kernel and editing the kernel power configuration file.[36] The system has 256 MB of dedicated high performance RAM (Mobile DDR) paired with access to 768 MB swap space managed by the OS.[2] This provides a total of 1 GB of virtual memory.

Screen and input

The Nokia N900 has a 3.5-inch (89 mm) resistive touchscreen with a resolution of 800 × 480 pixel (WVGA, 267 ppi). According to both Nokia and the Xorg.log, it is capable of displaying up to 65k colours (565 RGB).[37] The LCD is transreflective to permit usability over a wide range of luminosity (from daylight to dark). Haptic feedback is provided to touchscreen input by applying a small vibration or a sound; the user can choose whether to have this feature enabled.[38] A stylus is provided to allow more precise touch input and access to smaller user interface elements. A 3-axis accelerometer allows the orientation of the screen to change between portrait and landscape mode in certain applications, or it can be used as user input in games and applications.[39] While the dashboard or desktop is active, rotating the device from landscape to portrait mode activates the phone application (a feature that can also be disabled at user discretion).[40] With update PR1.2, It became possible to view web pages in portrait mode.[41] Developers may add support for portrait mode in their applications if desired.[40][42] There is a proximity sensor which deactivates the display and touchscreen when the device is brought near the face during a call.[43]

The slide-out 4-row keyboard and D-pad of the Nokia N810 have been replaced on the Nokia N900 with a slide-out 3-row backlit keyboard with arrow keys (as with previous Internet Tablets, an on-screen keyboard is also available). In addition to the English QWERTY layout, the slide out keyboard will be available in variants for Italian,[44] French,[45] German,[46] Russian,[47] Czech,[48] Nordic (Finnish, Swedish),[49][50] and Spanish. The Nokia N900 has an ambient light sensor that adjusts the display brightness and activates the backlit keyboard.[51] The OS comes with a word prediction software that can be configured to the user preferences (auto capitalization, word completion, auto spacing between words).[52]

The device has an autonomous GPS with optional A-GPS functionality and comes pre-loaded with the Ovi Maps application. Ovi Maps provides typical mapping features such as alternate views (3D landmarks, satellite, and hybrid maps), address/places of interest searching, and route planning, although it does not have turn-by-turn navigation as of yet.[53][54]

The 5 megapixel camera on the back of the Nokia N900. The hatch is open. The tilt stand is seen surrounding the camera.

The 5 megapixel back camera has an autofocus feature, dual LED flash, 4:3 and 16:9 aspect ratio options, and 3× digital zoom. The focal length of this camera is 5.2 mm, the aperture is f/2.8, and the focus range is 10 cm to infinity.[4] It is capable of video recording at up to 848 × 480 pixels at 25 fps. The lens, while not in use, is protected by a sliding hatch. Opening the hatch launches the camera application. Although the 0.3 megapixel front camera is capable of video recording at up to 640 × 480 pixels[4] and pre-production units could be used for video calls over IP using Google Talk,[55] the retail version was delivered without any software enabling video calling or video chatting.[56] In update PR1.2 OTA (over-the-air) Skype video calling was added, enabling the fascia camera.[41]

Buttons

When holding the device facing the screen; on the top, from left to right, rocking buttons (which function as volume up/down or zoom in/out depending on the context), power on/off and camera button. Pressing the power button brings up a menu to change the profile, activate offline mode (a.k.a "Airplane or Flight mode", which turns off all emitted signals), Lock Device (either "Secure" with key code, or simple lock),[57] and an option to end the current task.

As the Nokia N900 has fewer hardware buttons, it makes use of the touchscreen to display on-screen buttons, for example, to accept, reject and end a call.

Audio and output

The N900 has a microphone and stereo speakers located on each side of the device. There is a 3.5 mm four-contact TRRS connector which simultaneously provides stereo audio output and either microphone input or video output.[58] PAL and NTSC TV out is possible using a Nokia Video Connectivity Cable (included upon purchase) or a standard TRRS -> 3x RCA cable.

There is a High-Speed USB 2.0 USB Micro-B connector provided for data synchronization, mass storage mode (client) and battery charging. The Nokia N900, unlike previous versions of Nokia's Internet Tablet, hasn't enabled support for USB On-The-Go (the ability to act as a USB host) by default, this in order to meet the deadlines for production and USB certification.[59] There is an ongoing community effort to add this support subsequently, currently the software is in beta stage.[60] Requiring a non-standard USB cable or USB A-A adapter and software from the development repository.

The built-in Bluetooth v2.1 supports wireless earpieces and headphones through the HSP profile. The Nokia N900 supports hardware capable of stereo audio output with the A2DP profile. Built-in car hands-free kits are also supported with the HFP profile. File transfer is supported (FTP) along with the OPP profile for sending/receiving objects. It is possible to remote control the device with the AVRCP profile.[4] The DUN profile which permits access to the Internet from a laptop by dialing up on a mobile phone wirelessly (tethering), the HID profile which provides support for devices such as Bluetooth keyboards and PAN profile for networking using Bluetooth are unsupported but can be enabled.[61]

The Bluetooth set also functions as a FM Receiver, allowing one to listen to the FM radio. The N900 also has a 88.1–107.9 MHz FM transmitter which can, for example, play music through a separate radio. The Nokia N900 has Wi-Fi b/g connectivity with support for WEP, WPA and WPA2 (AES/TKIP) security protocols.[62]

The Nokia N900 can synchronize with Microsoft Outlook through ActiveSync and various other e-mail and calendar clients through SyncML over bluetooth or the micro-USB.[4] Contact information can also be exchanged via the vCard file format which is supported commonly by e-mail programs, including Evolution and Microsoft Outlook.

The device also features an infrared port (not compatible with IrDA[63]) that can be used to turn the Nokia N900 into a remote controller using third-party software.[64]

Battery and SIM

The battery life of the shipped BL-5J (1320mAh) battery in N900 seems very deficient and it was not able to make it through a full working day with a internet connection and call usage.[65] In a press release[66] Nokia stated they are aiming at "one day of full usage"[67] or "Always online : Up to 2-4 days (TCP/IP connected)" and "Active online usage: Up to 1+ day". Early reports from users range from 12 hours (Wi-Fi on, web browsing, video and some GPS),[68][69] to about 2 days online but not used continuously.[70] The value appears to be highly dependent on the user's choice of background software, active desktop widgets, IM and email polling, as well as mobile network signal quality (especially 3G) and in some cases, software bugs. Nokia reported talk times are around 9 hours with GSM and 5 hours with 3G.[71] Battery life can be extended significantly by switching off GPS/A-GPS, Wi-Fi, and Bluetooth and by replacing 3G by 2G / GPRS.

While previous Internet Tablets used larger batteries (1500 mAh compared with the N900's 1320 mAh), they are based on a less efficient microprocessor. Typical battery time for the Nokia N810 is around 7 hours of continuous full usage, display and Wi-Fi on. In principle, On N900 figures are expected to be much higher. Third party extended batteries up to 2400 mAh capacity are available for the N900.[72]

The SIM card is located under the battery which can be accessed by removing the back panel of the Nokia N900. The microSD(HC) card socket is also located under the back cover (but not under the battery). No tool is necessary to remove the back panel.

Storage

The Nokia N900 has 32 GB eMMC and 256 MB NAND non-removable storage.[2] Additional storage is available via a hot swappable microSDHC card socket, which is certified to support up to 16 GB of additional storage.[73] Hot swapping works based on a magnetic sensor which detects removal of the back cover, which causes the partition to be unmounted. The microSDHC card can be formatted with a supported file system such as ext2, ext3, FAT16 and FAT32.[citation needed]

The 32 GB eMMC is split into 3 partitions:[35]

2 GB as ext3 mounted to /home

768 MB as swap

the remainder as VFAT mounted to /home/user/MyDocs with about 27 GB of free space.

The 256 MB NAND is formatted as UBIFS[74] and contains the bootloader, kernel and root directory "/"[citation needed] with about 100 MB of free space.

Programs larger than 500 kB including dependencies should be stored in /opt  which is symlinked to /home/opt and therefore located on the 2 GB ext3 partition. The VFAT partition is also available for storage but needs to be used carefully as it is unmounted and exported if a usb cable is connected to the device.