iphone 3s needs repair to speaker dials out and recieves calls in very clean cond £50 ono +

iphone 3s needs repair to speaker dials out and recieves calls in very clean cond £50 ono i have been quoted betwee £25-£40 to fix it i is unlocked to any network and has had screen protector and rear cover since i got it internet and ipod works fine i was going to get it fixed but i just got my upgrade so no longer need it if you know how to fix them it would be a cheap phone if not between £25-£40 will have it working perfectly going by the quotes i had thanks for looking.