When the iPhone 3G first came out, speeds were pretty great on AT&T in NYC. Soon after, the network became congested and virtually unusable around my office in Soho. So when the i5 was released with LTE, I was excited to have a reliable connection again during the day! When I first got the device, I ran speedtests that resulted in approximately 20Mbps download speeds and around 15Mbps upload speeds. I was very happy. Unfortunately, over the last week, speeds have began to decrease significantly again. While my LTE connection is still very reliable, the speeds are nowhere near what they were just 3 weeks ago. Below is a screenshot I just took of my Speedtest in the Soho area. If these speeds now remain consistent, I'd be 100% fine but I'm worried it's going to again lead to being unusable due to congestion. Is this a legitimate concern?