Hi guys. I bought a used iPhone 4 from craigslist and it turned out that it doesn't have any sound from external (bottom) speaker. Earpiece and earphones are working. I tried everything. Restore, reset, update, earphones maneuvering... I have read online that Apple replaced phones like this. If you have advice on fixing, I am listening. But, my question is this. Can I walk into the pple store and request a replacement even though I am not the original buyer. I have bought another iPhone 4 in a different state, for which I do have a receipt. Would that help somehow? Do you think if they would replace it for me? What do you suggest? Thank you. Or should I make it simpler: If I am not the original buyer of the iPhone, can I still take it to the Apple repair, if the iPhone is eligible for repair?