https://devzone.nordicsemi.com/f/nordic-q-a/18925/nrf52-samsung-connectionHello ! I experiment connection problems on a nRF52 board with a Samsung J3 (Android 5.1). To sort out this problem, I made some tests with the nRF52-DK (PCA10040), the Heart Rate Sensor example (ble_app_hrs) and the nRF Connect application. Hereen-USTelligent Community 13Thu, 12 Jan 2017 15:53:42 GMThttps://devzone.nordicsemi.com/thread/73134?ContentTypeID=1Thu, 12 Jan 2017 15:53:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:77566081-384e-472d-99b7-4ec13e01b780apuret<p>I use the compatibility mode on the S132v3.1.0 with success on the Heart Rate Sensor example. I will validate your answer after the correction of my real project.</p> <p>Thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/73133?ContentTypeID=1Thu, 12 Jan 2017 13:13:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:808176ad-e4bb-44c4-8a17-c0266497b991apuret<p>Ah ok, I miss the BLE_GAP_OPT_COMPAT_MODE_2. I will try that right now.</p> <p>If I was unsuccessful, I will capture a sniffer trace (which I have COM connection problem too!).</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/73132?ContentTypeID=1Thu, 12 Jan 2017 10:15:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:17d800b9-cfd7-4f64-82de-a37ee477a03cHung Bui<p>Hi Apuret,</p> <p>Could you try to capture a <a href="https://www.nordicsemi.com/eng/Products/Bluetooth-Smart-Bluetooth-low-energy/nRF-Sniffer/">sniffer trace</a> ?</p> <p>The new compatibility mode on the S132v3.1.0 is only enabled after you call sd_ble_opt_set() with BLE_GAP_OPT_COMPAT_MODE_2 ID and mode_2_enable = 1. Please check the ble_gap.h header in S132v3.1.0.</p><div style="clear:both;"></div>