Claimed to be the most expensive phone in the world, this 3G iPhone has been designed by Austrian jeweler Peter Aloisson using solid 18-carat gold and 6.6 carat diamond. This latest model dethrones Goldvish Le million costing $1.3 million which till now held the title of world's most expensive phone.

The phone is made up of solid 18 carat yellow gold, white gold and rose gold with the white gold line encrusted with a total of 138 brilliant cut diamonds. iPhone 3G King’s Button replaces the iPhone’s standard plastic home button with a rare 6.6 carat diamond. The estimated value for the King Button is $2,517,345. The phone packs same features as present in the 3G iPhone.

Known for high-end, hand crafted mobile phones, the new collection comes in three variants -- stainless steel, hallmarked white gold and yellow gold.The phones sport a patented keypad which 4.75 carats of solid ruby bearings. The phone's SIM drawer comes engraved with a unique Vertu pattern and battery cover release is operated by D-ring.

Hand-built in England, Vertu's new collection features a QVGA OLED display of 320x240 pixels, Wi-Fi, Bluetooth, email support, 3G and VoIP. The gold or platinum Signature phones are authenticated by a Swiss Assay Office hallmark -- the only electronic product to carry this stamp.The Vertu’s scratch-free collection takes more than two weeks to form in a 2000 C furnace. The sounds produced by Signature are taken from a piece of music composed for Vertu by the Academy Award winner Dario Maranelli. Vertu Signature in stainless steel costs Rs 6,46,000, yellow gold comes for Rs 1,767,000 and the white gold phone is available for Rs 1,971,000.

The second-generation LG KF900 offers a host of technical upgrades over its predecessor. New features include a minimalist exterior, a set of keys that slide out and an improved user interface with LG’s latest active flash UI technology and haptic feedback on touch input.

Other key features include large touchscreen, 3G capability with HSDPA up to 7.2 Mbps, 5 megapixel camera featuring slow motion video recording and DivX playback, Wi-Fi, full HTML browser, and video calling capabilities.

The new Prada also packs Prada ring tones, wallpapers and video clips. The phone also features ‘Prada Link’ (LG-LBA-T950), a Bluetooth device that can remotely monitor phone calls as well as read full SMS text messages without having to extract the phone from a bag or pocket.

The phone sells for 600 Euros in Europe (around $775 in US currency), and requires a two-year service contract.