Make sure it is set to English
Just a quick tip to those buying in HKG, or BKK.
Have the store guy set the phone to English for you. It is not easy when the instructions come up in Chinese or Thai and you are trying to figure it out.
Usually not a problem in Singapore, but I have a friend who still can't use the phone she bought in HKG because of the language settings.
It is a two second job for someone that reads the other language, impossible for the rest of us.