Arendo - heart rate belt / heart rate monitor (Heart Rate Monitor) | Chest | Transmitter with Bluetooth Smart 4.0 | waterproof | 14 grams | Black | Apple Products | with App i-gotU Sports on many Android devices (equipment)
I use the belt with the runtastic PRO on my Samsung S4 mini. The two are working together just fine, and also the installation, if properly carried out, goes smoothly. You have the strap when you install in order to have, otherwise it is not. Simply put on belt, turn on BT Phone and looking in the app a BT belt 4, finished, this will take a minute, and then the part is ready for operation. By delivery via Amazon has as usual everything went well here fine and fast. My strong buy recommendation!
Update: Also on my Samsung S3 does the belt without problems and exactly as described above with the S4 Mini.