Joseph Brown, the developer behind the hacked carrier updates floating around for AT&T, Sprint, Verizon, and T-Mobile, just posted a lengthy blog post detailing how he claims “Apple limits devices to even out” the networks of its carrier partners. Specifically, Brown says that Apple is limiting the iPhone 5 to Category 10 (14.4Mbps) HSDPA despite the device’s support for category 24 (42.2Mbps) DC-HSDPA+ and the AT&T network supporting up to Category 14 (21.1Mbps) HSDPA+:
Here we can see what is quite obvious to, really, anyone at this point from being jerked around so much by carriers. Yes folks, this is throttling coding. When we made the AT&T Hacked Carrier Update, this was the first line of coding to be scrapped when the project started. Immediately, through my testing on an AT&T iPhone 5 and iPad 4th generation, there were significant and noticeable results. There is no argueing or disputing that this is clear evidence you are purposely, 24/7, being throttled, even if you haven’t used more data than your authorized to use or that you’ve purchased with your hard earned money. AT&T users, do you think this is fair?
The theory is that Apple limits the capabilities of the device in order to combat the large amount of data/bandwidth iOS device users consume and ease congestion on carrier networks. Brown found signs of throttling data speeds for Verizon and Sprint too. The only carrier that is apparently not limiting the iPhone 5′s capabilities is T-Mobile.
Brown also says “Apple has band preferences set for T-Mobile and AT&T causing signal issues” that could be easily fixed.
Here’s what Brown found in his analysis of the other carriers:
-AT&T limits HSPA+ and permanently throttles LTE (unless hack is applied)
-Verizon permanently throttles LTE (unless hack is applied)
-Verizon and Sprint throttle down 3G (unless hack is applied)
-Apple has band preferences set for T-Mobile and AT&T causing signal issues (very much fixable by Apple and the carrier and is currently being looked into, from I’ve been told)