Ask HN: I SMS'd a number and it automatically gave me his name

2 pointsdeadghost8y ago1 comments

I sent a SMS message to a number that is not in my contacts and my contacts app Contacts+ automatically fetched his full name. How is it doing this? I do have FB running and the receiver has his number set to 'Friends only' in FB.

1 comments

1 comments · 1 top-level

rbanffy8y ago

Can you try again with other numbers and see what happens?

Then, from a network you can capture traffic, try it again.

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