Unlocked 555 on vodaphone

Have had a UK Vodaphone 555 unlocked to work in Spain and put my old PAYG sim into it with credit set up the correct pack for Internet on smartphones with the help of a Vodaphone salesman but it still says UNABLE TO CONNECT PLEASE REVIEW YOUR NETWORK SETTINGS. Has anyone got any ideas if this phone still set to UK for internet etc and can I change the settings???? it works for talk & text but not email of web? THANKS if anyone is listening to my cry for HELP !!!!

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You'll have to change the APN settings to Vodafone Spain - I believe the name would be ac.vodafone.es with username & password vodafone