Step 13.1: Implement getNumber with native ionic

src/services/phone.ts

@@ -2,13 +2,25 @@ import { Injectable } from '@angular/core';
 import { Accounts } from 'meteor/accounts-base';
 import { Meteor } from 'meteor/meteor';
 import { Platform } from 'ionic-angular';
+import { Sim } from 'ionic-native';
 
 @Injectable()
 export class PhoneService {
   constructor(private platform: Platform) {
 
   }
 
+  getNumber(): Promise<string> {
+    if (!this.platform.is('cordova') ||
+      !this.platform.is('mobile')) {
+      return Promise.resolve('');
+    }
+
+    return Sim.getSimInfo().then((info) => {
+      return '+' + info.phoneNumber;
+    });
+  }
+
   verify(phoneNumber: string): Promise<void> {
     return new Promise<void>((resolve, reject) => {
       Accounts.requestPhoneVerification(phoneNumber, (e: Error) => {