AGPS INJ allows to receive a valid GPS signal faster.In the first place, you have to choose the Application-GPS (Sygic, Navigon, MapFactor, ....) from the list of applications. A Desktop-Link is then automatically created. Requirements: - The application requires access to the Internet every time it runs. It will download and inject AGPS data (10-20Kb) - In principle, the application was developed for MTK Chips (MTK 6575,6577,6589,6515, ...). For these Chips: 1) If present, disable EPO (you will not need it anymore) 2) IMPORTANT: If present, activate AGPS (usually this option disapears with 4.2 Android-ROM , even though there is AGPS). Please ensure that this option is enabled, if present - Other phones that have GPS / AGPS can benefit from this App (Optimus 4x, Galaxy S2 -first Version- How to know if this App can help me: 1) Slowly Receipt of Satellites Information. 2) Receipt of Satellites Information , but there is no FIX. The application does not need root.