Coming from the 4s, 6s, and most recently the 7, I have the same opinion about the battery life of the previous models, it is BY FAR the best I have encountered on an iPhone. I am a businessman and the usage I put it through daily is quite demanding. It lasts me a day and a half! This has never happened with previous devices. What some people write: (it doesn't lag anywhere...) if the app has a problem or the internet connection is not good... it might freeze, but it's not the device's fault.
At first, it seemed strange to me without the home button, but the assistive touch is adjustable and serves me very well. It's all a matter of getting used to it... just like with the swipes that have changed direction for the control center and notifications. The Face ID requires you to have a clean surface where the front cameras are located, otherwise, it asks for a passcode... especially if the lighting is a bit strange...
The sound during calls is very loud and clear, something very important for my work which sometimes finds me outside with movement and noise... it has a very good speaker and plays music loudly.
The WiFi range of the device is something I hadn't paid attention to... but with the 5s, some owners had issues. In the distances where I noticed that the 5s loses signal, the XR catches it without interruption.
I use a Vodafone SIM as the primary line and a Cosmote eSIM as the secondary. Both work simultaneously, with good sound quality even in difficult areas. You can choose which line you want before calling someone, and data also has the option to choose.
Overall, I am very happy that I finally have an Apple device with 2 numbers! I got the "Product Red" color, which is beautiful! In terms of device size, I would say it is larger than the previous devices I had, but it doesn't bother me in my pocket or during transportation. It is a device that I believe I will have for many years!