Your first mobile device may have cost nothing compared to modern smartphones of today, but that old "brick" could actually be thousands of pounds.
Antiques marketplace LoveAntiques.com has compiled a list of the most valuable "vintage" mobile phones with the highest price.
Topping the list is a rare version of the first iPhone - which is worth a staggering £10,000. There are also possible windfalls instore for those who still have old Motorolas and Nokias too.
The 10 most valuable mobile phones are:
Pre-production Prototype iPhone 1 - £10,000+
Motorola 8000x- £800 - £3,500
Nokia 7700 - £1,000 - £2,000
Mobira Senator NMT- £800 - £2,000
IBM Simon Personal Communicator- £800 - £2,000
Nokia Sapphire 8800 - £500 - £2,000
Technophone PC105T - £600 - £1,500
Orbitel Citiphone- £600 - £1,000
Ericsson R290 Satellite Phone - £300 - £1,000
Rainbow StarTAC - £100 - £400
Small factors like software, model, cult status and rarity are just some things that can make an old mobile phone valuable.
Experts say that the prototype iPhone 1 - has been known to fetch up to £30,000. However, many post-production iPhones have had different software installed - making them less valuable.