The world’s most expensive mobile  a diamond-encrusted iPhone costing a staggering £5 MILLION By Daily Mail Reporter Last updated at 10:23 AM on 15th October 2010 This incredible iPhone 4 was yesterday unveiled as the world’s most expensive mobile – worth a jaw-dropping £5 MILLION. The handset is wrapped in more than 500 individual flawless cut diamonds totaling 100 carats. It features two interchangeable diamonds which fit over the ‘home’…