Welcome to Vodafone Community
unlock code sent doesn't work just a message 'SIM network unlock request unsuccessfull' please could any one advise?
Is the alternative non Vodafone UK sim card your using @herbertappleby activated ?
i.e. connects to mobile data etc and are you currently in the UK too.
Current Phone > Samsung Note 9 _512Gb > Model: SM-N960 Hybrid-Duos.
Samsung One Ui / Pie.
Samsung Gear s3 Frontier Watch.