Before you discard your mobile device, you will need to deactivate your Mobile Security Key, which you can do via the “Settings” menu after you have logged on to Personal Mobile Banking. Alternatively, you can switch your Mobile Security Key from your old mobile device to a new one. Download the Hang Seng Personal Banking mobile app on your new mobile device and select “Settings” > “Security-related” > “Mobile Security Key / Biometric Authentication” > “Mobile Security Key” > “Switch Mobile Security to this device” from the menu after logging on to Personal Mobile Banking. You will be asked to generate a security code from your old mobile device and input it into your new mobile device for activation. Your old Mobile Security Key will be deactivated immediately after successful activation. We recommend that you also reset your old mobile device to factory settings after deactivation. If you did not keep your old mobile device, you may logon with the new mobile device and go to “Settings” > “Security-related” > “Mobile Security Key / Biometric Authentication” > “Mobile Security Key” > “Switch Mobile Security Key to this device” from the menu to deactivate the Mobile Security Key from your old mobile device so you can activate it on the new one.