I will be arriving in Shenzhen over the weekend but will initially arrive at HK airport. I will need a data only SIM card for my 16 day stay. Is the best option to buy a China Unicom SIM at HK airport from one of the 7-11 stores? I am looking for a SIM that will work in both HK and China.
Something like in the following link:
Alternatively if there is an option to get a similar SIM delivered to my Shenzhen hotel on arrival that would be great too.
I'd be grateful for any suggestions.