No, but it has 4G LTE. Both the ThinkPad X13 Yoga Gen 4 and the ThinkPad X13 Yoga are listed as supporting 4G LTE WWAN. 4G LTE speeds are close to 5G, depending on your region. If you want true 5G, and you're in a city that has 5G cellular towers, you're probably better off using a 5G capable phone as a hotspot, and then selecting it as a network on Windows.

It depends on which model you buy. You get two Thunderbolt 4 ports if you buy a model that has an Intel CPU. If you buy the model with an AMD CPU, you'll only get USB4 ports, which still have comparable speeds but lack some features. For example, Thunderbolt has PCIe signaling and unlocks the ability to use an external GPU with your ThinkPad for more intensive tasks like gaming, coding, or video editing. You'll also be able to use Thunderbolt-certified docks, SSDs, and monitors. With monitors specifically over Thunderbolt, you can connect to two 4K displays at 60Hz at once or one 8K monitor to boost your productivity. On the ThinkPad with USB4, you'll be limited to USB-C docks if you want that dual monitor support. USB4 only supports one display.

Yes, the laptop is backed by Lenovo's standard free one-year limited warranty, called Depot Support, which covers parts, labor, and basic phone support for hardware issues. This only covers issues from the factory and not issues of your own creation. You can extend this warranty with Lenovo Premium Care Onsite Support if you'd like to get bonus features like advanced phone support and faster repairs at a location near you. You also can get Lenovo Premium Care Plus, which covers accidental damage and gets you the fastest possible repairs. Lenovo Premium Care Onsite Support is $50 for one year or $175 for four years. Lenovo Premium Care is $85 for one year or $230 for four years.