HTC’s HTC Care office has been opened (for a couple weeks now) in MongKok.
HTC Care provides customers with comprehensive after-sales support
including speedy repairs and on-site technical consultation. A wide
assortment of HTC accessories is available to customers. HTC Care also
showcases of the latest HTC mobile devices. In addition, HTC Care will
extend the same suite of HTC services to all existing customers from
Dopod International under the previous original manufacturer’s warranty
agreement.

HTC Care address:
Room 1903, Kowloon
Building, 555 Nathan Road, Yau Ma Tei.
(closest MTR exit is Yau Ma Tei exit A1)
Operating hours:
Mon-Fri 12:00p.m. to
8:00p.m.
Sat 12:00p.m. to 4:00 p.m.
Closed on Sundays and Public Holidays.
HTC customer service hotline:
3520 1234
Link: HTC Announcement

