Question: what is the difference between an x and an xs?
Answer: The iPhone XS is just a tiny bit heavier than the iPhone X. The iPhone X and the iPhone XS have the exact same dimensions. But the iPhone XS is just slightly heavier than the iPhone X — the iPhone X weighs 174 grams (6.14 ounces), while the iPhone XS weighs 177 grams (6.24 ounces).