Apple is now looking into user complaints regarding how iOS4 runs on the iPhone 3G. Since the release of iOS4, users have voiced their dissatisfaction with the new operating system. Most of the complaints deal with slowed performance and decreased battery life.
The operating system, which was released to the public on June 21st, added new features such as multitasking and a unified inbox. Though some users have praised the system, those with older model iPhones are the ones experiencing most of the problems.
Also, we tested iOS4 on an iPhone 3G and wrote up our impressions last month: