When phone rings and I answer I can't hear anything, what could be wrong?

I installed the little i-Zettle application and card-reader and I guess in the process I changed a setting but I can't find where. Now when the phone rings and I answer I can't hear anything. The "normal" sound icon at the top of the screen is OK, but there must be another mute function somewhere that I can't see.

Very grateful for help! Gwyneth

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by sophia.walker
2 hours ago
Last post by wintheiser.rosetta
1 hour ago
Last post by guy79
3 hours ago
Last post by wilfrid.cole
22 minutes ago
S5 box pack
Started by alivia91
Last post by dayne.schamberger
2 hours ago
Last post by marlene81
4 hours ago
Last post by boyle.betty
2 hours ago
Last post by feil.arvid
15 minutes ago
Last post by bemmerich
3 hours ago