We found no deletion options. Besides, good to know from the PP: HTC does not maintain all Personal Information it collects in a form that can be accessed or updated by you. HTC may keep records of changes to your Personal Information (including deletions). Certain types of communications that you send to other users cannot be removed, recalled or otherwise deleted, such as messages. Of course, you may try to contact them and request deletion: https://www.htcdev.com/contact
URLS:
http://www.htcdev.com/
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