Question: What Models Are Compatible With iOS 4.0?
While iOS 4.0 (formerly iPhone OS 4) brings many new and exciting features to the iPhone, it also removes support for some models. The list below details which models are and aren't compatible with iOS 4.0.
Answer:
Fully Compatible with iOS 4.0
Limited Compatibility with iOS 4.0
These devices can run iOS 4.0, but can't use all of its features (such as multitasking). They are not compatible with iOS 4.3 and higher.
