It is client responsibility to change the combined device to new device. Please take following steps. If you need further assistance, please call our customer hotline at (852) 2119 0116.  Login to your trading account with your old mobile *iSPEED FX is required.  Change 2FA method to “SMS” at your old device and log out.  Login to your trading account with your new mobile *iSPEED FX is required in your new mobile.  Change 2FA method to “Biometric”.