Apple iPhone 4 HSUPA support speeds 3G uploads by 10x

Invisible Shield for Apple iPhone 4!“In addition to its oddly secret 512MB of RAM, iPhone 4 also packs another important feature Steve Jobs gave only brief mention of during his introductory keynote at WWDC: support for High-Speed Uplink Packet Access (HSUPA),” Daniel Eran Dilger reports for AppleInsider.

“HSUPA (also known as Enhanced Uplink) is a 3G protocol that provides uplink speeds up to 5.76 Mbps in the Category 6 flavor supported by iPhone 4,” Dilger reports. “It joins HSDPA (High-Speed Download Packet Access), the enhanced download upgrade to UMTS 3G service that was supported by last year’s iPhone 3GS, enabling up to 7.2 Mbps downloads. Because it lacked support for HSUPA, iPhone 3GS was limited to just 384 kbps uploads.”

Dilger reports, “Support for both HSDPA and HSUPA in iPhone 4 makes the phone a ‘3.5G’ device and means it can theoretically achieve 7.2 Mbps downloads and 5.8 Mbps uploads, but those capabilities are also dependent upon the mobile operator. In the US, AT&T’s 3G HSDPA primarily maxes out at 3.2 Mbps, with typical speeds ranging from 0.7 to 1.7 Mbps. The company is in the process of deploying faster 7.2 Mbps service, but this is currently limited to just a few cities: Charlotte, Chicago, Dallas, Houston, and Los Angeles and Miami.”

Read more in the full article here.

[Thanks to MacDailyNews Reader “Andrew W.” for the heads up.]


  1. Hmmm… not in my part of Los Angeles, oh well.

    Luckily I don’t hold my phone anyway. I always use the headphones, they sound friggin’ great on phone calls. The noise cancellation feature works with them, too. So does FaceTime. No yellow spots either.

  2. @iPhonExtreme

    If you have a 3GS and your network has fast HSUPA then your already at 7.2mbps. That’s how our networks run here in Canada. Had it for over a year now!

    Our cell carriers may charge more up here but at least we get something for it. And we don’t get dropped calls!!

    Has anyone outside the US had reception problems while hold there new phone a certain way?

  3. If AT&T;says they are deploying this in Chicago, THEY LIE! I’m in Chicago at the moment and this is the worst service I’ve ever seen, in ANY of the cities to which I’ve traveled. The 3G service is spotty and scarce and flips to Edge more often than its on 3G. And when it’s on 3G, it feels more like my old 1200 baud modem.

  4. Where are the MDN rants and raves about ATT. Wow they must be playing with the Droids and missed the chance. MDN seems to believe ATT could fix the whole network with a wave of a baton. MDN writers couldn’t fix a flashlight but they know what ATT can dol

Reader Feedback

This site uses Akismet to reduce spam. Learn how your comment data is processed.