LOOKING TO SWAP A SUPERB SONY DAV S888 SURROUND SYSTEM FOR A DECENT SMARTPHONE .

HI, I AM LOOKING TO SWAP MY SONY DAV S888 HOME CINEMA DVD 5.1 SURROUND SOUND SYSTEM FOR A DECENT SMARTPHONE. THE SYSTEM IS IN PERFECT CONDITION AND SOUNDS FANTASTIC. WOULD LIKE TO SWAP FOR A DECENT SMARTPHONE OF SIMILAR VALUE, THANKS