https://devzone.nordicsemi.com/f/nordic-q-a/19745/the-number-of-data-package-send-from-phone-in-one-intervalHI I want to know the max of number of data package send from phone in one interval? Now I could only get one package form iphone6 with character of write without respond in one interval. Someone said the max package in one interval is up to 6 ,buten-USTelligent Community 13Fri, 17 Feb 2017 10:07:37 GMThttps://devzone.nordicsemi.com/thread/76800?ContentTypeID=1Fri, 17 Feb 2017 10:07:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3a1b607d-fb15-4e5b-8b91-e1b9359a3fa0run_ar<p>Could be that you have limitations in both ends. On iOS you should make sure you actually place mutliple packets in the tx buffers so the phone actually hase enough packets to send. Note that it is possible to overwrite the tx buffers, so you should add a mechanism to acknowlede the packets are received correctly similar to what we do in with DFU. You can use a <a href="https://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF-Sniffer">sniffer</a> to check that the MD (More data) bit is sent. On the nRF51 you should check what <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s130.api.v2.0.1/structble__common__opt__conn__bw__t.html">bandwidth settings</a> you are using.</p><div style="clear:both;"></div>