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.
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Steve Jobs on AT&T Service Improvements and Possibilities of Multiple U.S. Carriers
On the possibility of multiple carriers in the U.S., Jobs remained tight-lipped:
Walt: Would there be advantages to having two [carriers] in the US?
Steve: There might be.
Walt: In the near future?
Steve: You know I can't comment on that.
And on the issue of service issues, Jobs said thing should improve by the end of the summer:
Q: Steve, we love our iPhones... but our concern is that we can't make a phone call on it. Is someone working on that?
A: Well, we're talking about it. You can bet we're doing everything we know how to do.
Q: Can we expect something soon?
A: I'm told that a lot of places are getting better certainly by the end of this summer.
Kara: And if they don't get better?
Steve: Then they won't.