Additional tweaks for permission checks

mobile/src/App.js

@@ -4,6 +4,7 @@ import {
   StyleSheet,
   AsyncStorage,
   PermissionsAndroid,
+  Platform,
 } from "react-native"
 import { NativeRouter, Route, Link, Switch } from "react-router-native"
 import MapView from "react-native-maps"
@@ -26,6 +27,13 @@ export const ensurePermission = (
   onSuccess,
   onError
 ) => {
+  if (Platform.OS === "ios") {
+    if (onSuccess) {
+      onSuccess()
+    }
+    return
+  }
+
   PermissionsAndroid.check(permission)
     .then((flag) => {
       if (flag) {