Abstract: An external case is configured to attach to a wireless device that has an antenna and a case separate from the external case. The external case has a first case portion and a second case portion. The second case portion is moveably attached to the first case portion and is moveable between a first position corresponding to the external case being closed and a second position corresponding to the external case being open. Additionally, the second case portion has an antenna system. The antenna system is parasitically coupled to the antenna of the wireless device. The antenna system receives from and sends to free space when the wireless device is operational, when the external case is attached to the wireless device, and when the second case portion is in the first position and in the second position.

Abstract: In some embodiments, an apparatus includes a protective cover configured to attach to a wireless device having an exterior surface. The surface includes a first portion and a second portion mutually exclusive from the first portion. The second portion of the surface is associated with at least a portion of an antenna of the wireless device that performs proximity sensing for the wireless device. The protective cover is configured to cover the first portion of the surface when the protective cover is attached to the wireless device. The protective cover is configured to not cover the second portion of the surface when the protective cover is attached to the wireless device. As a result, the proximity sensing and/or the power transmitted by the antenna are not affected by the protective cover when the protective cover is attached to the wireless device and when the wireless device is operational.