You need to Allow to Install a third party app on your Android OS based Smartphone or Tablet. Here is how you do this:
Step 1 – Go to Settings. Step 2 – Go to Applications. Step 3 – Tap and check “Unknown sources” box. Step 4 – Tap ‘OK” when it show the warning. Thats how you can enable the installation of APK files on your phone manually.
Download Pokemon Go for iOS
Step 1: Download Itunes to your computer
Step 2: In the Itunes App, change your region settings to New Zealand
Step 3: Search Pokemon GO in the Itunes APP.
Step 4: Download the APP in the itunes APP.
Step 5: It will ask you to create an account. Make sure you make a new Gmail or Hotmail account for this to work. DON'T USE YOUR PRIMARY GMAIL/HOTMAIL ACCOUNT!
Step 6: Relax You're almost there.
Step 7: After you have made a new Apple ID it should bring you to the Billing Page. If you have NONE at the side of the Billing at the top,. You are doing it RIGHT! Click NONE & Google streets in New Zealand & Get an Area Code & Phone Number
Step 8: After all that is done, Sign into Apple Store using your New Zealand Account.