NFC Compatibility: NFC Bluetooth pairing function has been tested (or reported by users as working) with these phones: Google Nexus 4, Nexus 7, LG Optimus G, G Pro, 4X HD, Samsung Galaxy S4 SV, Galaxy S3 SIII, Galaxy Nexus, Galaxy Note II, S3 mini, Galaxy Victory 4G LTE, HTC One, OneX/XL/SV, HTC First Facebook Home, HTC EVO 4G LTE, HTC Windows Phone 8X, Nokia Lumia 920 Windows Phone 8, Nokia Lumia 820, Nokia Lumia 822, Nokia Lumia 810, Nokia 301/700/701/720/610 NFC, Sony Xperia S, Xperia P, Xperia Ion, Xperia TX (ST29i), Xperia V, Motorola Droid Razr M, Droid DNA, other Smartphones and Bluetooth enable device show to connect two Bluetooth devices at the same time? 1, Enter the pairing mode of the Bluetooth music receiver: blue light and red light are flashing alternately.2, Turn on the Bluetooth function of your first smartphone and click "connect" to connect your phone to the Bluetooth receiver.3, After they pair successfully, please turn off the Bluetooth function of your first smart phone. (PS: it is to turn off Bluetooth function of your phone, not disconnect from the receiver.) And the receiver will become the pairing mode.4, Turn on the Bluetooth function of your second smartphone and click "connect" to the Bluetooth receiver.5, Please turn on the Bluetooth function on your first smartphone and then click "connect". Until this moment, two smartphones will both connect the receiver at the same time. Remark: Installation of Tap-and-Pair App (or any other NFC Bluetooth pairing handover app compliant to NFC Forum Specifications) is required for Android OS version 4.0.x, despite NFC hardware support by the phone. Tap-and-Pair app can be downloaded free of charge from Google Play Store. Phones that have been upgraded to 4.1/4.2 (Jelly Bean) do not require app installation for NFC Bluetooth pairing.