Just FYI.  A friend got his N4 over the weekend.  I have a GNex (as did he) and we are both on T-Mobile.
At work today we did some speed tests with the phones side-by-side. At work I usually get HSPA:8 or 9, but did not look this time to see what the actual connection was.
We ran a speed test during rush hour, usually speeds are lower in the morning, I assume all the people streaming music or checking traffic or something.
I got 1.1Mbps, he got 5Mbps. We tried later in the day, I got 3.0Mbps, he got 9Mbps. Usually I get in the ballpark of 3-5Mbps at work, I've never seen close to 9.
We have a similar route home, and there is a traffic light that must be right next to an underutilized but high-speed tower. I always get super speeds there, around 8-9Mbps. Today I got 8.9Mbps, which isn't too bad. But he managed to pull down 21Mbps.
No idea why we both got sent to Indiana for the test, but here was the fast result:
Galaxy Nexus HSPA+ 21:
		
		
	
	
		
	
Nexus 4 HSPA+ 42:
		
	
It seemed like, at least in this testing, it is anywhere from 2-5 times faster. What was interesting was even at lower speeds, the dual-carrier seems to make a difference, with him getting almost 5 times the speed during a congested period of the day. Apparently DC-HSPA makes a difference most of the time, not just when you are pushing the upper limits of HSPA+ 21.
The speed difference is definitely a compelling aspect of upgrading for me. I was also impressed with how fast face-unlock works on his phone. On the GNex there is a 1/2-1 second delay while the camera sort of "turns on". His snaps on so fast it almost unlocks before you see it (though I don't think he has blinking enabled).
I didn't realize they removed the stock android browser in favor of Chrome, though. I think the mobile Chrome browser sucks. And I like being able to view flash sites if needed.
				
			At work today we did some speed tests with the phones side-by-side. At work I usually get HSPA:8 or 9, but did not look this time to see what the actual connection was.
We ran a speed test during rush hour, usually speeds are lower in the morning, I assume all the people streaming music or checking traffic or something.
I got 1.1Mbps, he got 5Mbps. We tried later in the day, I got 3.0Mbps, he got 9Mbps. Usually I get in the ballpark of 3-5Mbps at work, I've never seen close to 9.
We have a similar route home, and there is a traffic light that must be right next to an underutilized but high-speed tower. I always get super speeds there, around 8-9Mbps. Today I got 8.9Mbps, which isn't too bad. But he managed to pull down 21Mbps.
No idea why we both got sent to Indiana for the test, but here was the fast result:
Galaxy Nexus HSPA+ 21:
	Nexus 4 HSPA+ 42:
	It seemed like, at least in this testing, it is anywhere from 2-5 times faster. What was interesting was even at lower speeds, the dual-carrier seems to make a difference, with him getting almost 5 times the speed during a congested period of the day. Apparently DC-HSPA makes a difference most of the time, not just when you are pushing the upper limits of HSPA+ 21.
The speed difference is definitely a compelling aspect of upgrading for me. I was also impressed with how fast face-unlock works on his phone. On the GNex there is a 1/2-1 second delay while the camera sort of "turns on". His snaps on so fast it almost unlocks before you see it (though I don't think he has blinking enabled).
I didn't realize they removed the stock android browser in favor of Chrome, though. I think the mobile Chrome browser sucks. And I like being able to view flash sites if needed.
	
	
 with lte