Kitty4670 wrote:
Do they have smartphones in Asia? Do you always need a social security number to buy a phone in another country?
Not only they have smartphones in Asia, but almost all smartphones were assembled there. Iphones are very popular in China, for example (Trump is working very hard to change this).
And no, most countries do not use social security numbers. However, in some countries you need to provide some type of personal identification when acquiring a new SIM card.