The iPhone X cannot run iOS 17 or iOS 18. It is stuck on iOS 16.
The cheapest way to get a modern chip and 5G support.
If your budget allows, consider these newer models which support the latest iOS: iphone x where to buy
These are the safest options. They often include warranties and professional inspections.
Slightly newer, but also nearing the end of update support. iPhone 11: Much better battery life and a faster processor. The iPhone X cannot run iOS 17 or iOS 18
The is no longer sold by Apple or major carriers. Because it was discontinued in 2018, your options are now limited to the refurbished and used markets. 🛒 Where to Buy an iPhone X 1. Certified Refurbished Sites
You can find lower prices here, but you must be careful of "Activation Locks" (iCloud locks). If your budget allows, consider these newer models
Sells "certified" used devices with a focus on functional testing.