https://devzone.nordicsemi.com/f/nordic-q-a/70312/ble-transmission-success-rate-after-establishing-a-connectionHi, Recently I am using BLE for transmission on zephyr on nrf52840 When my peripheral establishes a connection with central, the subscription is also successful My peripheral uses notify to transmit to central, is its success rate 100%? I count theen-USTelligent Community 13Mon, 11 Jan 2021 15:40:32 GMThttps://devzone.nordicsemi.com/thread/288448?ContentTypeID=1Mon, 11 Jan 2021 15:40:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a80eae9a-d38c-47e3-91b2-ac405b5e14bdEinar Thorsrud<p>Hi&nbsp;Poyi,</p> <p>For how long did you test and in what kind of environment? You should always expect some packet loss in the real world, but if you are testing with devices close by and with little interference, you may not see any packet loss during&nbsp;a shorter session.</p> <p>Einar</p><div style="clear:both;"></div>