You can call BlackBerry’s UK head office on 01753 667000, where their customer service staff will offer support and advice regarding any BlackBerry phone warranty enquiries.
To write to customer care about your warranty, contact BlackBerry via post at:
200 Bath Road,
The mobile phone designer and manufacturer BlackBerry offer numerous warranty options, which may be extended subject to communication with the customer. For this reason, handset owners are eager to contact the company to extend or enquire about their warranties.