https://devzone.nordicsemi.com/f/nordic-q-a/122807/nrf-connect-mobile-command-meaningHi, I&#39;m using nrf Connect mobile (for Android) app to exchange data (read/write) with a BLE device (server) over GATT. I have a large characteristic (123 bytes) to exchange: no problem when reading. I have problem when I want to write it, the stacken-USTelligent Community 13Wed, 09 Jul 2025 14:10:04 GMThttps://devzone.nordicsemi.com/thread/541964?ContentTypeID=1Wed, 09 Jul 2025 14:10:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b1f6da97-fc61-4cda-aca6-a508892205bcVidar Berg<p>Thanks for the additional information. Unfortunately, I&#39;m not able to see from the log what could have triggered the GATT error and subsequent disconnect. Could you either capture a sniffer trace (<a href="https://www.nordicsemi.com/Products/Development-tools/nRF-Sniffer-for-Bluetooth-LE">nRF Sniffer for Bluetooth LE</a>&nbsp;- requires another nRf52840 dongle or DK), or provide a hex file or project that will allow me to reproduce the problem on my end with a nRF52 DK?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/541789?ContentTypeID=1Tue, 08 Jul 2025 11:41:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:28d00e0c-80d3-4199-aacb-ec84048112bdAlexManfrex<p>SDK = 15.3.0</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/541776?ContentTypeID=1Tue, 08 Jul 2025 10:37:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3042ccf2-c69f-4977-a6d5-156f14c66d1aVidar Berg<p>Hi,</p> <p>Is the FW based on any SDK example, and in that case, which SDK? Please also include the log from the nRF connect app.</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>