Just in case anyone reading this is planning a trip to Hong Kong or Taipei in the near future, here's everything I know about prepaid data SIMs there.
I've written about options in Hong Kong before—less than a year ago
, in fact. But it's worth reiterating that the most convenient of them by far is the Discover Hong Kong Tourist SIM
. No activation codes required, just pop it in, reboot and enjoy. Access to PCCW hotspots is of dubious value, as you have to remember the password supplied with your SIM and enter it every time you're within range of a hotspot (otherwise known as a PCCW phone booth). But the unlimited local calling can be very handy, at least for someone whose girlfriend has family in town.
As for "4G data", I can only surmise that the North American variant of the Nexus 5 doesn't support the necessary bands for that.
The best resource I've come across for Hong Kong data SIMs is this page
on a site called Hong Kong Shuttle. Their recommendation is the Power Prepaid SIM from One2Free
. I'm not sure I agree with that; you only get a 1GB data bucket, and when we used it last year our speeds didn't seem any better than with PCCW.
Another benefit of the official tourist SIM is that they can currently be activated as late as March, 2016. I actually brought home another pair for our next trip through Hong Kong—it's good to plan ahead!