private void Signin_Clicked(object s, EventArgs e) { if (ephone.Text.Trim() != null && ephone.Text.Count() == 9) { MessagingCenter.Subscribe <object, string>(this, "INFO", (sender, data) => { if (data != null) { ShowInfo(data); } }); MessagingCenter.Subscribe <object, string>(this, "seccuss", (sender, data) => { if (data != null) { UpdateUINavigate(data); } }); _firebaseAuth.LoginWithPhoneAsync("+252" + ephone.Text.Trim()); // Show Loader container.IsVisible = false; loader.IsVisible = true; } else { DisplayAlert("Sing ing", "Please entry a valid number!", "OK"); } }