I can only hear sounds when phone is on Speaker Phone.

it sound like you have the phone on mute. try taking it offmute,

maybe by mistake you reduce the volume on the iphone.

try the following during a call press on the right control up volume to see if that improve your sound.

if that doesn't work you should go to an apple store or your cell provider.

Replace the flip assembly, the ear receiver is dead and thats why you cant hear, replace the flip and you'll be fine, its not expensive and this is a common issue with motorola flip phones.

Hello,

The problem why you cannot hear the person you are talking to with the one at the top front(the main earpiece) is that the front earpiece of your phone is bad that is you cannot hear anything unless you put it on speaker.

All you need to do is to replace the front earpiece of your phone and you will see that you will hear when you are talking to anyone.

Change the front earpiece as advice and you see that you will hear your conversation when calling or receiving calls.

Take care.

check and replace the earpiece speaker
if not try to rework the UEM

the ear piece may be dead or if its a flip phone check the flex cable

this wouldn't be covered unless you have the accidental damage warranty. it seems like the speker is flipped over now

like omg..

I would suggest you to send your phone in for repair or call technical support whatever carrier that your phone goes by

dear replace the speaker of ur phone in k300 the speaker and ringer are the same if u not have new speaker then short both point of the speaker to gather will be ok.