There are quite literally thousands of different Android phones in existence -- please let us know what exact brand and model you have. I always ask, because sometimes it's helpful to boot into Safe Mode or do a cache partition wipe as a general troubleshooting step, and since these processes can be a little different depending on the phone, it's helpful to know the exact model.
It sounds like there might be a problem with the phone's mic. Try making a call using a wired headset -- if the other person can hear you, then the issue is with the phone's own microphones. If the other person still hears the distorted sounds, then it may be a problem with the SIM card, or with the network. Have you asked your carrier about this?
06-21-2017 05:01 PM