Yes, Sideline supports call waiting but only if your carrier supports it currently. If you're a Sideline user on a call when another call comes in, you'll be notified and have the option to switch between those two calls.
- iPhones - Option to 'End and Accept', 'Decline', or 'Hold and Accept' call.
- Androids - Option to choose 'Decline' or 'Accept' call.
Questions? Submit a request.