Person on other end of phone call can't hear me

Hi @cindyl ,

Just curious if the mute icon is enabled/displayed when you’re on a call and you can’t be heard? Maybe check the setting in Phone app screen when on a call. Tap the 3 vertical dots to access additional options > Mute and see if it is enabled or disabled when you can’t be heard.

Being random makes it more difficult but try the following. Allow sufficient time after performing each of the suggestions below to satisfy yourself that the problem is still there or not.

i). Wipe the cache partition and check if the problem still occurs or not.

ii). If it still occurs then start and use the phone in safe mode and check.

If it no longer occurs when in safe mode, then a downloaded app is the cause of the problem. The trick is to find out which one. You will need to uninstall each downloaded app, one by one and test the phone in normal mode between each uninstall. When the phone works OK then the last downloaded app that was uninstalled was the culprit. A downloaded app is one that you downloaded and installed on the phone and wasn’t pre-installed with the phone when you first got it.

iii). If it still fails in safe mode then you may need to consider performing a factory reset to determine whether the problem is software or hardware related.

Note: Be aware that a factory reset will erase all your data and downloaded apps. It will restore the phone to its factory default condition. It will be like when you first got it. If you decide to try this then backup the phone to the cloud or a computer before performing the factory reset. If the phone has a Google account then you will need to know the account name and password to access and setup the phone after the factory reset due to the FRP (factory reset protection) Lock being enabled by the reset.

To backup the phone, go to Settings > Accounts and Backup > Backup and Restore and follow the prompts

Once the phone has been backed up, perform the factory reset. Go to Settings > General Management > Reset.

Once the phone has been reset check if it works OK.

If it still fails then there is a hardware problem.

If the phone works OK, allow time to be sure and then using the backup made earlier, restore the phone to what it was by using the phone’s restore feature. Go to Settings > Accounts and Backup > Backup and Restore.

Once the phone has been restored, check that it still works OK. if it does then the reset has resolved the problem.