Does Telstra recommend customers use a bumper when operating iPhone 4?
Apple iPhone 4 is approved for use on the Telstra Next G™ network which means it’s suitable for handheld use in metro and major regional coverage areas without the use of accessories like a rubber bumper. However, to improve coverage performance in these areas further, Telstra suggests customers team their iPhone 4 with an approved rubberised bumper or case. An approved bumper or case can also improve the consistency of data speeds when customers are using a fast network like Telstra Next G™ network.