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)
Learn how to block unwanted calls from a number,follow these steps: Note: To block any incoming call that is not added to the reject list, touch the red Phone icon and drag it to the left. To block the call but provide a message, touch Reject call with message and drag up. 1.From the Home screen, Touch Phone.2.earn how to block unwanted calls from a number,follow these steps: Note: To block any incoming call that is not added to the reject list, touch the red Phone icon and drag it to the left. To block the call but provide a message, touch Reject call with message and drag up. 1. From the Home screen, Touch Phone. 2.