sentences:  On 2 April 2009, Openmoko suspended development of their third device, codenamed GTA03, to focus on the FreeRunner.In 2010, development of the GTA03 was continued by Golden Delicious Computers under the new codename GTA04, which includes major hardware revision, and the first unit was shipped on 10 October 2011.Unlike most other mobile phone platforms, these phones are designed to provide end users with the ability to modify the operating system and software stack.