Dave Is quiet correct.
You are not able to change the ring tone to the uk one as your not in the uk.
When you are abroad you get there ring tone, engade tone and sometimes depending on which network you connect to there warning messages in there language.
You also gain some of there services in addition to your own back in the uk.
I also know that some networks aborad when you roam on them allow you to use there own shortdials when speaking to there own network for customer care problems.
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