Apple plans to end the free case program on all iPhone 4s sold after September 30, 2010.

The company said that the iPhone 4 antenna attenuation issue was even smaller than the early estimations. For all those who own an iPhone 4 users and need a case, Apple will continue providing them a Bumper case for free. But for everyone else, Apple is discontinuing the free case program on all iPhone 4s sold after September 30, 2010.

This means that Appe is also returning to its normal returns policy for all iPhone 4s sold after September 30.

Users experiencing antenna issues are advised to call AppleCare to request a free Bumper case.