Do I need to hold my phone (or the SMARTO device) for calls?
For mobile calls there is no need to hold SMARTO (or your phone) in your hand. SMARTO can hang around your neck on the lanyard, be clipped to a pocket or purse, or placed on a nearby surface since the microphone in the headset supplied with SMARTO is used during mobile phone calls (and it is close to your mouth).
Bluetooth connection is not stable during phone calls.
In this case we recommend placing your mobile phone in front of you or in your hand, but not in a tight pocket or otherwise pressed against your body, as the body blocks the Bluetooth signal.