public async void SendSms(string recipient = null, string message = null) { message = message ?? string.Empty; if (CanSendSms) { var msg = new SmsMessage(); if (!string.IsNullOrWhiteSpace(recipient)) { msg.To.Add(new MessagesAddress(recipient)); } msg.Text = message; msg.SimId = SimSlotId.Sim1; await MessagesManager.SendMessageAsync(msg, true); } }