I have problems during communications (echo, low sound …) whereas I didn’t have this before ?

Start by making a reset:
To do this: press the + and – buttons simultaneously for more than 5 seconds (this will erase the phone from the kit memory). Thereafter remove the Speakerphone device from the list of registered Bluetooth devices on your phone. Once these two steps are completed, you can make the connection between the kit and the phone.
If the problem persists, do a test by calling your own number and leaving a message and then listening to it. Contact us (via the contact section) giving us a maximum of information (speakerphone model, phone model, problems encountered, quality of the message …).