Does the iphone 4 and 4s come with a sim card slot?

I've been searching and i think they do have but i wanted to be sure

In most countries, Yes.

What is a smartphone without a SIM card slot.

Of course they do. They have a microSIM slot on the right side of the phone which will pop out when the hole is pressed with the SIM eject tool or a paper clip.

Yes. All iPhones have GSM models, therefore they all come with SIM slots.

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