The Phone Exchange is an electronics boutique which buys, sells and trades used mobile phones, serving customers from locations in Knoxville, TN and Hamden, CT. Customers can sell their old phones for cash, or accept trade-in credits at a greater value than cash. This shop is an authorized PagePlus cellular dealer and offers prepaid plans in addition to mobile phone sales. The Phone Exchange offers a 30-day warranty on all pre-owned equipment.