The , released in late 2009, was a pioneer in dual-SIM technology, featuring a dedicated side hardware button for instant switching between networks. Essential Manual & Setup Guides
: A complete 74-page English manual is hosted on Manua.ls and the Internet Archive . Dual-SIM Management Highlights samsung duos 5722 instruktsiia
: Access the Samsung Downloads Center to find manuals by entering model code "GT-B5722". The , released in late 2009, was a