how to?

[iMore Question]

does it use data when i use it? do i have to have wifi to use it? where can i call for free and is sms all over the world..do they have to download whatsapp in order to receive my sms and call?

 

[Just_Me_D]

does it use data when i use it?

What is the "it" you're referring to?

do i have to have wifi to use it?

it depends on what "it" is.

where can i call for free

you can borrow a friend's or family member's phone. Other than that, many calling plans have free local or nationwide calling. Check with the carriers in your area.

and is sms all over the world

basically, yes..

do they have to download whatsapp in order to receive my sms and call?

No. Basically all smartphones come with SMS capabilities.