What do I do if my registered device has been lost or stolen?
Last Updated: 05 Dec 2025
You can deregister your lost and stolen device on another device with the ASB Mobile Banking app or FastNet Classic internet banking. Here’s how:
ASB Mobile app:
- Log in to the ASB Mobile app.
- Tap the profile icon in the top left corner of the ‘Accounts’ screen.
- Tap ‘Settings’, and under ‘Devices’ select ‘Manage devices’.
- Select the device you wish to deregister and tap 'Remove device'.
FastNet Classic:
- Log in to your FastNet Classic account.
- Click on 'Settings' in the top right of the page.
- Click on ‘Manage devices’.
- Select the device you wish to deregister and click 'Remove device'.
- Click 'Remove' to confirm.
Tip: You can review the date a device was last used by selecting more information.
If you can’t access the ASB Mobile app or FastNet Classic, or need to block cards, call us on 0800 803 804, or +64 9 306 3000 if you are overseas to have your device deregistered.
Tip: You can also block any cards in cards control via the ASB Mobile Banking app.
We also have these useful guides to help you.
How to temporarily lock your ASB Visa Credit or Debit Card
How to cancel and replace your ASB Visa Credit or Debit card
ASB Card Control useful guides
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