https://devzone.nordicsemi.com/f/nordic-q-a/22434/what-s-the-nrf-toolbox-android-app-uart-s-connection-intervalWhat&#39;s the NRF Toolbox (Android App) UART&#39;s Connection INTERVAL? At the SDK12&#39;s EXAMPLE&#39;s Nordic Uart Service&#39;s default connection Interval is MIN_CONN_INTERVAL = 25ms MAX_CONN_INTERVAL = 75ms and this Conn Parameter is conducted by Centralen-USTelligent Community 13Wed, 31 May 2017 09:23:56 GMThttps://devzone.nordicsemi.com/thread/88232?ContentTypeID=1Wed, 31 May 2017 09:23:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7a5f25b2-bfbe-4349-88f7-9a30fb284361Hung Bui<p>It&#39;s not possible for the Android app to set connection parameters. It&#39;s up to the Android OS. But from Android app you can request to change connection priority , see <a href="https://developer.android.com/reference/android/bluetooth/BluetoothGatt.html#requestConnectionPriority(int)">here</a>.</p> <p>The easiest to set connection parameters is from the peripheral side like what we have:</p> <p>MIN_CONN_INTERVAL = 25ms MAX_CONN_INTERVAL = 75ms</p> <p>Of course there is a chance that the central will reject it. But I haven&#39;t seen Android /iOS would reject the above parameters.</p><div style="clear:both;"></div>