One of the things Apple added to the iPhone was High-Speed Uplink Packet Access (HSUPA) and it significantly improves performance. This weekend, ZDNet reports indicated 60% faster downloads and a 500% increase in upload throughput. The results will vary depending on the support for HSPA on the local AT&T cell. Various users have confirmed the increase in speeds in different areas. People in Boston are reporting double the download throughput and between eight and ten times the upload throughput. New York City users, which have notoriously been complaining about a congested network still found improvements as well in download speeds as well as five to ten times the improvement in uploads.
The iPhone 4 supporting HSUPA as well as High-Speed Downlink Packet Access (HSDPA) makes it Apple's first "3.5" phone. Wireless phone carrier, AT&T is using HSPA as an evolutionary step towards its 4G LTE network which they planned on deploying in 2011. The company has begun testing the new and advanced 3.5G network, capable of up to 7.2 Mbps downloads, in six cities - Charlotte, Chicago, Dallas, Houston, Los Angeles, and Miami - with 19 more to come by sometime this ear. The HSUPA adds an additional transport channel called the Enhanced Dedicated Channel (E-DCH), which allows for uploads as fast as 5.8 Mbps.
If you are an iPhone 4 owner why don't you test out your speeds and let us know if you have any improvements. Drop us a comment below to share your experience.
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