Performance
Under the hood, the iPhone 4 CDMA is powered by the Apple A4 chipset, featuring a 1.0 GHz Cortex-A8 CPU and PowerVR SGX535 GPU. While modern apps and technologies may strain this setup, it was quite competitive when launched, enabling smooth multitasking and efficient performance in routine applications. The device runs on iOS 4, but can be upgraded to iOS 7.1.1, bringing more features and apps into play, albeit with some slowdown due to the hardware limitations. Storage options include 16GB and 32GB variants, with 512MB RAM, though the lack of expandable storage through microSD remains a limitation.