Main article: Multi-user MIMO. Recently, results of research on multi-user MIMO technology have been emerging. While full multi-user MIMO (or network MIMO) can have a higher potential, practically, the research on (partial) multi-user MIMO (or multi-user and multi-antenna MIMO) technology is more active.
There are two ways to decline a call on the iPhone. 1  By pressing the Sleep/Wake button. 2  By tapping the 'Decline' button onscreen (appears only when the phone is unlocked, as you've mentioned)
1 On your Galaxy S3, launch the Phone app. 2  Tap the Options key and then select Call settings. 3  Tap Call rejection. 4  Slide the Auto reject mode switch to the right to turn on automatic call rejection. 5  Tap Auto reject mode and then select either All numbers or Auto reject numbers.