when using speakerphone speak into the round mic at the top of the handset near the headphone socket, when speaking normally with handset heal against ear obviously speak as normal into the mic at the bottom of the phone, obviously if you want to use the handset in speakerphone mode on a table people may not be able to hear you very well, but speaking into the mic near the headphone socket will help people hear you on a busy street, or when they claim your very quiet.