Here's what you are looking for the Galaxy Gio S5660 User Manual you can download it here. It was not yet long time ago since the Samsung Galaxy Ace S5830 has been released and you will need to know how to navigate of its function.
Well, here's the Samsung Galaxy Gio S5660 User Manual
Samsung Galaxy Gio GT-S5660 mobile phone user manual is now available online and can be downloaded directly at Samsung website. This Samsung Galaxy Gio GT-S5660 manual comes in 130 pages on PDF document format (2.66 MB).
Samsung Galaxy Gio GT-S5660 User Manual PDFDownload here.
All you need to know about how to use you Samsung Galaxy Gio S5660 is on it.