Night mode is an automatic setting which takes advantage of the new wide-angle camera that's in the iPhone 11 and 11 Pro models. It's equipped with a larger sensor that is able to let in more light, allowing for brighter photos when the light is low.
16" MacBook Pro Now Available
O2 Discounting 8GB UK iPhone
The discount is similar to one offered by Germany's T-Mobile who offered subsidized pricing for the 8GB iPhone depending on the 2 year service plan chosen.