Iphone 4s 16gb black working .

Iphone 4s black 16gb working but 1 slight problem it can be sorted Its just you cant hear the ringtone when somebody is calling and u when u answer u can hear there voice but from a little distance If you put headphones in u can hear everythng 100% evn the ringtone It does not come with earphones as to hygine reasons Its on o2 Call for more info thanks And also the side button does not work when u put it on silent or loud so it might need cleaning but phones cheap enough No timewasters Would probilbly swap with samsung galaxy s2 whiite on o2 r unlocked also cash my way