On the packaging this BLE HRM says It only works on iPhones 4s and better but online it now includes the galaxy S4 and some HTC phones that are BLE capable. Additionally I understand it works with the GS3 if you use cyanogenmod to get the android OS support from 4.3.
BLE HRMs are not paired in bluetooth settings but within the app you want to use it with. So the app has to support BLE HRMs. At first my phone (or rather the apps) didn't see the H7 and I wasn't sure it would work, but after turning bluetooth off and allowing it to refresh, it paired with the apps and worked perfectly on all of the ones with BT4.0(BLE) support.
Sent from my SPH-L720 using xda app-developers app