That screenshot looks like a samsung? How does one access that menu?

Not sure if my old S2 can do it, but worth a go. Wish my Sony Z2 could see stuff like that.. can it?

I didn't find the right solution from the internet.
References: https://forums.digitalspy.com/discussion/2077072/three-4g-discussion-thread-part-2/p5


For More You Can Check : Information security video