According to a survey of the advertising Apprupt iOS 4 is at 95.59% of the devices from Apple a year after the disposal. A 4.22% still using The iOS 3 and assume that it is probably for the users of the original iPhone which is not to take the iOS 4. An even smaller proportion of about 0.17% using iOS 2 but is small enough to take us into account.
As shown by the adoption of new publications on iOS is in very good shape.
/ Via Apprupt /