I am also unable to pair my Bluetooth Smart heart rate monitor to my Nexus 4.
I am using a 60beat Blue and the device is not detected in either the Bluetooth settings menu or the Runtastic PRO V4.0 App.
When I try and connect to a app 'nRF HRM Demo' (the app 60beat support directed me too to test if the device worked) I get a message pop up "Bluetooth Low Energy isn't supported by your phone
" Could other users try this app and let me know if they get the same message before I reply to 60beat?
I am running Android 4.3 (stock factory image and I am not rooted) JWR66V
I am waiting for a reply from Runtastic support to see if this device is compatible with their APP.
I do know my heart rate monitor uses the Transmission frequency of 2.4 GHz maybe this is the problem.
I will reply again once I receive a response from Runtastic as I requested a list of compatible hardware.
It does seem strange that I am unable to find much information about this new feature and how to test it.
FIngers crossed we will be able to definitive rundown of what works and does not work on both the Nexus 4 and Android 4.3