If (you're into microoptimizing things and) all you care about is whether they're mobile, you can leave out `Type=caller-name` to save a whole one cent per lookup :)
And if you're doing this before you try to SMS them, you can skip the lookup entirely, if it's a landline you'll just get an error back.
(I work at a company that uses Twilio heavily and it's full of this sort of microoptimization)
And if you're doing this before you try to SMS them, you can skip the lookup entirely, if it's a landline you'll just get an error back.
(I work at a company that uses Twilio heavily and it's full of this sort of microoptimization)