https://devzone.nordicsemi.com/f/nordic-q-a/6486/does-the-nrf51822-have-a-capability-of-responding-to-multiple-phonesHi, Does the nRF51822 have a capability of responding to multiple phones? I am working with RFduino using the RFD22301. I&#39;m assuming that the RFD22301 is the same BLE module as nRF51822. Am I correct in this assumption? I&#39;m using an app to controlen-USTelligent Community 13Tue, 14 Apr 2015 14:25:05 GMThttps://devzone.nordicsemi.com/thread/22640?ContentTypeID=1Tue, 14 Apr 2015 14:25:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2269039c-d210-4ef4-8876-6586734a46e7MartinBL<p>Hi</p> <p>According to BLE specification a peripheral can only be connected to <a href="https://learn.adafruit.com/introduction-to-bluetooth-low-energy/gatt">1 central at the time</a>, but a central can connect to up to 8 peripherals. Usually your phone(s) acts as the central but using Android 5.x your phone can <a href="https://developer.android.com/about/versions/android-5.0.html">act as a peripheral as well</a>. Also, as of OS X v10.9 and iOS 6, Mac and iOS devices can function as <a href="https://developer.apple.com/library/ios/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetoothOverview/CoreBluetoothOverview.html#//apple_ref/doc/uid/TP40013257-CH2-SW1">Bluetooth low energy peripherals</a>.</p> <p>Yes, the RFD22301 contains a nRF51822.</p><div style="clear:both;"></div>