So Frustrated!!
 

Everytime someone calls me on my Blackberry Curve 8320, they are on speakerphone for about 4 seconds. They say that they can hear themselves, like an echo, and on my end they are on speaker. I do not have my speakerphone activated at that time, and am so confused as to how to fis this! It's irritating! Thanks for your help! :)

That would be frustrating.
Has it always done this or is it something new?
Have you tried re-booting? :)

I am curious what people have to say about this. My 8350i did this same thing out of the blue the other day. Right in my cubicle. When I hit menu to "Activate Handset" my only option was "Activate Speakerphone" and it was clearly already on speakerphone. Then it just went to the handset after about 3-4 seconds. It has never done this before, and hasn't done it since. Experts?

Welcome to the forums.

Try the battery pull as JeepJen suggested. Also what OS are you running (Options > About)?

I did do a reboot as soon as I hung up the phone and it hasn't done it since, so that may have been the fix.