minor login fixes

lib/screens/onboarding/phone/phone_screen.dart

@@ -112,6 +112,14 @@ class _PhoneScreenState extends State<PhoneScreen> {
                               style: TextStyle(fontSize: 18),
                               textAlign: TextAlign.center,
                             ),
+                            Text(
+                              '(as well as to the email address from your social media account if available)',
+                              style: TextStyle(
+                                fontSize: 16,
+                                color: Colors.grey,
+                              ),
+                              textAlign: TextAlign.center,
+                            ),
                             Image.asset('assets/phone.png', width: 300),
                             SizedBox(height: 20),
                             _buildPhoneField(),