Recommend an electronics store/street/area in HK

I’ll be flying via HK next month and want to pop in to buy a new digital camera and a smartphone. Where would be the best area/street to go to? And any store in particular that you’ve had good dealings with?

Ta in advance?

(did a search, but didn’t find anything relevant)

Definitely check out Sham Shui Po. The Golden Center there is filled with electronics and computer parts. I have found several good deals there.

hong-kong-travel.org/Mong-Kok/

Any store in particular?