MOBILEBURN:
3G speeds on a "4G" device
AT&T labels its HSPA+ network as 4G and, as such, the ATRIX 4G is expected to deliver speeds that are faster than AT&T's 3G network. That's not the case. It offers the same chipset as the Inspire 4G and its download speeds were topping out around 1,300Kbps in New York City. Sure, we saw some spikes upwards of 2,000Kbps, but that's still not surpassing the 2,500-3,000Kbps we sometimes see on our 3G iPhone 4.
From Pcworld:
"The Atrix 4G runs on AT&T's 3G HSPA+ network. AT&T brands the network and related devices "4G" because, the company says, the network pumps out "4G-like" speeds, including download speeds of up to 6 mbps. With the FCC-approved Ookla tool installed on the Atrix, I tested the network connection of the phone from several locations around San Francisco, and found the download speeds were consistently in the neighborhood of 2.7 mbps. Only in my tests at our offices south of Market Street were the readings lower, averaging around 1.7 mbps.
Upload speeds across all five of my testing locations averaged 0.3 mbps (300 kbps), a very 3G-like result. Of even more concern were the latency times I saw. The Ookla tool consistently measured about 300 milliseconds of network latency--the time it takes for a packet to move from the device to an online server. That's roughly six times the latency seen in Verizon's LTE network and about a third higher than the latency in Sprint's WiMax network. The high latency number combined with the mediocre upload speed could hamper the smooth operation of apps like video chat and mobile gaming."
CNET:
The bad: No 1080p HD video recording or playback at launch. You can't install non-Market third-party apps. We
didn't experience great HSPA+ 4G data speeds.
PCMag:
Call quality wasn't great in my tests, but it was good enough to pass. First, the Atrix tends to over-report signal strength; in my weak-signal test, I saw two bars but couldn't connect calls.
The Atrix bills itself as a "4G" phone, but just like the
HTC Inspire 4G ($99.99, 4 stars), which uses the same modem, I found the Atrix to run largely at 3G speeds. Testing the handset in Manhattan, I saw speeds mostly in the 1.5Mbps range, with a peak of 3Mbps, which is good 3G, not 4G.
Laptopmag.com:
Using just the Atrix in our midtown Manhattan office, with 4 bars of HSPA+ service, we measured average download speeds of 1.37 Mbps and upload speeds of 0.29 Mbps using speedtest.net. These slow rates were confirmed when we tried loading ESPN.com, Laptopmag.com, and NYTimes.com; all took more than a minute to fully load. Out in Queens, speeds were a bit better. We measured Speedtest.net average download and upload speeds of 3.83 Mbps and 0.35 Mbps, respectively. We also saw markedly faster load times of 13 seconds (ESPN), 13.2 seconds (Laptopmag), and 9.83 seconds (NYTimes).
Businessinsider.com:
The Atrix is one of AT&T's first "4G" phones. More specifically, it runs on the HSPA+ network. Even though our demo unit said we were connected to HSPA+, we experienced speeds similar to 3G.