IPhone 4s SIM card in a Samsung galaxy 4?

Is it the same size SIM card or will I have to get a different SIM card like the iPhone 5 one?

Mini sim works

In a galaxy s4 you need to cut the sim (micro sim) just like the same size for iphone5. And if you want to use that same sim in some other old phones, you can get a sim cover for micro sim.

No they both have the same size.

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