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
FaceTime Over 3G Comes to Jailbroken iPhone 4s
My3G essentially tricks a user's phone into thinking it is on Wi-Fi instead of 3G, allowing users to access a number of features and types of content typically restricted to Wi-Fi connections. My3G is typically available to jailbroken iPhones via Rock Your iPhone for $3.99, but the site is currently down due to the high traffic load.
9 to 5 Mac has posted a video briefly showing off FaceTime over 3G in action.