[Marc Eibl]

When i make a phone call the other person hears me fine, but i hear an echo of my self when i talk. can i fix this? why do i echo when making a phone call? and this isn't when on speaker phone this is just regular phone to ear.

[SpookDroid]

I'd try disabling any voice/call enhancements that might be turned on (this will depend on your carrier/model) on the Call Settings, or if you're using a case, I'd try it without one (some cases in the past have been known to cause issues with the noise-reduction mic in some phones, causing echo).

[imex99]

My mom's had wifi calling on her s6 and I would hear an echo on my side... Was annoying!

[Jelly Belly]

It is a pity the OP is not a duck.

[SpookDroid]

My mom's had wifi calling on her s6 and I would hear an echo on my side... Was annoying!

Good point. If you're using WiFi calling it might introduce artifacts if there are network issues.