https://devzone.nordicsemi.com/f/nordic-q-a/4038/delay-in-writing-characteristics-in-android-4-3Hi, First, I understand this are Android questions, but I want to appeal to this very knowledgeable community ;) I have a BLE application using nrf51822 with SD 110 v7. I am reading/writing/notifications using characteristics from an Androiden-USTelligent Community 13Fri, 17 Oct 2014 03:25:09 GMThttps://devzone.nordicsemi.com/thread/14486?ContentTypeID=1Fri, 17 Oct 2014 03:25:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:18dc20d8-c05c-49ba-8037-cbcc00eeaebelong<p>I have the same problem. I think the android should have a characteristic buffer. If waitting for onCharactertisticWrite(), it will sand data slowly.</p><div style="clear:both;"></div>