Not all kindergartens in HK teach phonics....and even those that do don't necessarily know what they are doing and don't follow a systematic programme.
A lot of the time, the teachers do what they know-there isn't always a systematic programme.
Most of the international schools (and by those I mean those international kindergartens affiltrated with an international schls, not the local kindergartens that put 'international' in their name) are now following a systematic phonics programme.
It is always worth asking the school if they do/do not and what phonics programme they use.
Letterland, for example, is one phonics programme that is now considered outdated.
Any school worth their salt should now be using a synthetic phonics programme.
In the UK and Australia phonics has taken a lot longer to catch on, than it has in the States and Canada. In 1980s England I was never taught phonics. And there are still plenty of schs there now who are scrambling to introduce it.