Apple is looking into user complaints about hardware and software performance issues reported by iPhone 3G users after upgrading to iOS 4. According to the Wall Street Journal, the company is investigating the myriad complaints that have surfaced since the June release of iOS 4.

The major sticking points share a common factor: performance. Complaints are plentiful online—the Apple discussion thread on the issue currently spans 36 pages. According to many, upgrading to iOS 4.0.1 has done little to ameliorate the issue. There is even a humorous spoof of Apple’s iPhone advertisements about exactly what iOS 4 brings to the iPhone 3G. Less-prominent complaints also include the device overheating and general degradation of battery performance.

From the beginning, Apple explained that there would not be feature parity between the older iPhone 3G, the iPhone 3GS, and the iPhone 4. The iPhone 3G has a 412MHz processor versus the 600MHz processor of the 3GS, and a paltry 128MB of RAM versus 256MB on the 3GS and 512MB on the iPhone 4. And remember, one of the selling features of the 3GS was indeed the handset's speed improvements over the older 3G.

At this point, Apple is in an unenviable position: a handset that is performing undesirably with an operating system that the company said would be at least partially supported. Apple could recommend that users downgrade back to iOS 3.1.3, or tell them that older hardware will always have issues running the latest and greatest software; neither of these would be very popular with the 3G-using public. There is also a third option—put even more time and effort into optimizing the OS for a phone that is now two generations old. That's the least likely option in our view.

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