https://devzone.nordicsemi.com/f/nordic-q-a/112002/disconnected-reason-0x28Hi! I use SDK15.0 and s132_nrf52_6.0.0_softdevice I use nRF52 in two modes- peripherial and central in one time. When I use it like peripherial and have connect with antother nRF52 (central mode) with bonding mode, I try to connect smartphone (alsoen-USTelligent Community 13Wed, 31 Jul 2024 08:19:03 GMThttps://devzone.nordicsemi.com/thread/496354?ContentTypeID=1Wed, 31 Jul 2024 08:19:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a73e1f7e-953e-4899-9344-3e1d745db6ebMikhail<p>Thanks. Who should initiate bonding first? I suppose central side. And if central side will not request bonding? why disconnect occurred?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/496348?ContentTypeID=1Wed, 31 Jul 2024 07:42:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c88b588b-fdc1-48d9-b938-7d0ae63fc674lettystapp<p>I think you should check the bonding process on both the nRF52 peripheral and the smartphone. If one device is expecting bonding while the other is not, it can lead to disconnections. Ensure that the bonding settings are aligned between the devices. <span style="color:#ffffff;font-size:75%;"><a style="color:#ffffff;" href="https://tiny-fishing.com">tiny fishing</a></span></p><div style="clear:both;"></div>