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Thanks both. It's not insured, as I did have insurance with a previous phone, but still had to go without a phone while they sent it off, so wasn't much help.
It's not been charging for about a week now. Takes forever and loses charge quickly (I did have the phone replaced a couple of weeks after I got it, as not holding charge). Unfortunately, the battery is sealed in, so can't remove it.
I'll have a look at that link now. Thank you.