iPhone XS and iPhone XS Max (stylized as iPhone Xs and iPhone Xs Max, Roman numeral “X” pronounced “ten”) are smartphones designed, developed and marketed by Apple Inc. They are the twelfth-generation flagships of the iPhone, succeeding the iPhone X. They were announced on September 12, 2018 alongside the lower-priced iPhone XR at the Steve Jobs Theater in Apple Park, Cupertino by Apple CEO Tim Cook, with pre-orders beginning September 14, 2018 and official release on September 21, 2018.
The XS Max is the first plus-sized iPhone in the new bezel-less form factor since the 2017 iPhone X did not have a larger variant.
The XS has a design visually near-identical to the X but includes upgraded hardware including the A12 Bionic chip built with a 7 nanometer process. It also features a 5.85-inch (149 mm) OLED display and contains dual 12-megapixel rear cameras and one 7-megapixel front-facing camera. The XS Max features the same hardware and cameras, but has a larger 6.46-inch (164 mm) OLED display and battery (3,174mAh). It was also noted by the media that the XS received a smaller battery than that of the X (dropping to 2,658 mAh from 2,716 mAh).
The XS and XS Max are rated IP68 for dust and water resistance under IEC standard 60529, with Apple specifying a maximum depth of 2 meters and up to 30 minutes of submersion in water. This is an improvement over the IP67 water resistance of the iPhone 8 and X. Apple has performed tests in various liquids including chlorinated water, salt water, tea, wine, beer and juices.
Due to the release of the XS and XS Max, the X was discontinued meaning that, with a shelf life of only 10 months; it had the shortest ever tenure as flagship device in the history of the iPhone.
Internationally, the XS and XS Max will support dual SIMs through a Nano-SIM and an eSIM. In mainland China, Hong Kong and Macau, the XS Max will come with a dual Nano-SIM tray (and no eSIM) while the XS will support a single Nano-SIM. As the XS does not have a dual Nano-SIM tray, eSIM is supported only in Hong Kong and Macau but not in mainland China.
The wireless charging coil is now made of copper to reduce charging time and decrease power loss.