As you may be aware on some of the older Samsung phone models, you'll need to setup the device in order for Mobile Data to work. This is done in 3 steps:

Step 1: 

Ensure that WiFi is off

Step 2:

Click on one of the links below to take you to your networks setup page and follow the steps

Step 3:

Restart your phone.

Once completed, your phone should be setup for mobile data use.

Vodafone: https://www.manual-owner.com/vodafone-nz-apn.html

2Degrees: https://www.2degreesmobile.co.nz/help-and-support/mobile/your-phone-or-device/setting-up-your-android-for-the-internet/

Spark: https://www.spark.co.nz/help/mobile/device-help?page=device/spark/android-mobile/topic/internet/manually-set-up-access-point-name-apn/17

Skinny: https://support.skinny.co.nz/article/mms-data-internet-settings-37.html

Warehouse: https://www.apnsettings.org/nz/warehouse-mobile-apn-settings/ 

Please let us know if you need any assistance.