I'm not a cell phone expert. Some, maybe most, recent cell phones should be able to do BLE LR with their bluetooth radio. It is a specific modulation scheme a

I'm not a cell phone expert. Some, maybe most, recent cell phones should be able to do BLE LR with their bluetooth radio. It is a specific modulation scheme and it does require the BLE transmitter to be capable of particular power levels. It does not require a special antenna.