On a 10 day family trip, needed a SIM card for my Verizon iPhone. Found the 10 day Big Bay Area plan on their website. Good for 2gb data, 100 minutes of calls. Plus, if you order online for delivery or pickup you get the $148 card for $111. I elected pick up so they could help me. They speak English and are helpful. They took my Verizon sim out put their card in and it's working. It's advertised to work in Hong Kong, Macau & China. I'm headed to China in a few days and will update.
UPDATE Arrived in Beijing, found that the card did not work for data. Went to a China Mobile store in Beijing, the clerk told me that it would not work because I needed a card specifically for China.
I was bummed, but found a help number for roaming customers 400-120-4000. Which had customer service in Cantonese, Mandarin or English. A very helpful CSR explained that yes the phone worked but since I was now in China I needed to go to settings, turn on cellular data, set cell data options to Enable data only and turn on data roaming. Turn off the phone and once it restarted it is working. read more