Trusted Reviews is supported by its audience. If you purchase through links on our site, we may earn a commission. Learn more. Wireless Ground Mobile Phone Reviews All kinds of mobile phone accessories, from chargers to headsets to cases. Wireless Ground Sound Amplifier Review Score The Sound Amplifier from Wireless Ground is a small and easily portable piece of kit that lets you play music from your iPhone 4/4S more loudly Wireless Ground Amy Jones Page 1 of 1