Design: It looks identical to the iPhone X, but there are a lot of improvements inside. Available to you with 3 different colours black, white and gold.
Water and Dust Resistance: With upgraded iPhone XS models improved water resistance features, it offers an IP68 rating, which is way more better than the IP67 rating of the iPhone X.
The IP68 allows the iPhone XS and XS Max to withstand water up to two meters (6.6 feet) deep for approximately 30 minutes. In the IP68 number, the 6 refers to dust resistance while the 8 represents water resistance.
3D Touch and Taptic Engine: Apple's iPhone XS models continue to feature a Taptic Engine and support for 3D Touch gestures. 3D Touch is available throughout the iOS 12 operating system and is often used to display additional information through a force press gesture. And offers feedback in the form of haptic vibrations when users interact with the iPhone's display.
A12 Bionic Processor: Equipped with a new 7-nanometer A12 Bionic chip that provides faster and more efficient experience than the A11 in the previous-generation iPhone X.
The two high-performance cores in the A12 that are up to 15% faster than the old A11 Bionic and four efficiency cores that reduce the power used by 50%. The A12, combined with a bigger battery, enables much longer battery life for the iPhone XS and XS Max.
RAM: iPhone XS and iPhone XS Max include 4GB RAM, which is 1 GB more than the iPhone X.