I've got the Samsung SmartThings system installed in my house, but I've encountered a few situations where a new device (e.g. an in-wall outlet) couldn't be found through the SmartThings App on my Android phone. A temporary fix for me was to move one of my plug-in outlets about halfway to serve as a "bridge" between the SmartThings Hub and the new outlet.
My question is if there is an alternate way of adding new objects to my smart home? For instance my phone? Alternatively, what wireless technology (e.g. ZigBee, Z-Wave, Bluetooth) is needed to complete these links?