The Nokia 6800 series are a selection of Nokia Series 40 phones with a unique fold-out QWERTY keyboard. This type of keyboard is also used in the more recent Nokia E70 which is a Nokia Series 60 Symbian-based phone. These phones were marketed as “messaging devices” – all had built-in email clients, and some had BlackBerry support.
The 6800 and 6810 had four electrical contacts at the very top of the phone for the left side of the keyboard and another four just under the screen for when the regular 12-key numeric keypad was being used. A small magnet was built into the left side of the keyboard and the phones would switch to landscape mode as soon as this was lifted up. The 6820 and 6822 had the wiring for the keypad built into the hinges without any external contacts.
Nokia 6800
The 6800 was the first in the series and was a dual-band GSM 900/1800 phone with support for GPRS. The 6800 had an FM radio tuner and 5MB of memory.
Nokia 6810
A slightly updated GSM 900/1800/1900 tri-band version of the 6800, the 6810 had gold-coloured keys and a gold-coloured border around the screen. The 6810 had support for Bluetooth, EDGE, BlackBerry email and Wireless Village.
This phone was rarely seen for sale in shops and was marketed to businesses as a replacement for the Nokia 6310i. Though it was announced at the same time as the 6820, it only became available to buy about six months later.
Nokia 6820
The 6820 was the most popular phone in the series and was often stocked in shops when it was released in early 2004. This phone was smaller than the previous models; as a result, the keys were much smaller and had practically no space between them.
A variant known as the 6820b was marketed in North America with support for the 850MHz GSM band instead of the 900MHz band used by the regular 6820. The 6820 was functionally identical to the 6810 except it had a 352×288 camera instead of the built-in radio.
Nokia 6822
Released in early 2005 and based on the same design as the 6820, the 6822 was light silver in colour and so were all the keys. The only difference was the higher resolution camera (640×480) and 65536 colour display instead of 4096.
By the time it was released, the 3.5MB of memory it had was considered substandard and the phone was not kept on the market for very long. The 6822b variant supports the 850/1800/1900 MHz frequencies common in the United States.
Nokia E70
The Nokia E70 is a candybar/fold keyboard type smartphone from the Eseries range, announced in October 2005 and released in May 2006 at a cost of approximately $500 with prices in July 2007 around $345. There are two models of this phone, the E70-1 for the world market with tri-band (900, 1800, 1900MHz) GSM and UMTS, and the E70-2 for the Americas with tri-band (850, 1800, 1900MHz) GSM and EDGE packet data capability. Both models use the S60 platform 3rd Edition on top of Symbian OS version 9.1.
The E70 is the successor to the 6810/6822/6820, and previously the 6800.
The Nokia E70 is aimed at the high-end professional market. The 16 million color screen has a 352×416 pixel (totalling 146,432 pixels) resolution, and the E70 is capable of GSM, 3G, WiFi and Bluetooth connectivity. The SIP VoIP functionality will currently not work through a firewall or most router configurations. Nokia has made a statement that they are working on implementing STUN (originally planned for 2006 but only available for E70-1 as of June 2008), TURN and ICE (also planned for 2007 but not available as of June 2008).
As well, the advanced Bluetooth capabilities of the phone, capable of connecting to up to six devices simultaneously, lacks A2DP support.
Posted by pandebaik 
Posted by pandebaik 
