No, the iPhone XS does not have 5G capabilities. It was released in September 2018, at a time when 5G technology was still in its early stages of development and had not yet been widely adopted by mobile carriers around the world.

Instead, the iPhone XS is equipped with 4G LTE technology, which provides fast and reliable data connectivity for most everyday use cases. With 4G LTE, users can stream high-quality video, download large files, and browse the internet at high speeds, although not quite as fast as with 5G.
The lack of 5G support in the iPhone XS may not be a major issue for some users, especially those who live in areas where 5G coverage is limited or not yet available. However, for those who are looking for the latest and greatest technology and the fastest possible data speeds, the iPhone XS may not be the best choice.
In terms of future-proofing, it’s worth noting that many newer iPhone models released after the XS do support 5G. For example, the iPhone 12 series, released in October 2020, all feature 5G connectivity. As 5G technology continues to roll out and become more widely available, it’s likely that more and more mobile devices will be equipped with this technology to take advantage of the faster data speeds and improved network performance it offers.
In summary, the iPhone XS does not have 5G capabilities, but it still provides reliable and fast 4G LTE connectivity for most everyday use cases. For those who require the fastest possible data speeds or want to future-proof their mobile device, newer iPhone models with 5G support may be a better choice.