https://devzone.nordicsemi.com/f/nordic-q-a/59795/nrf9160-board-resets-when-connecting-to-nb-iotCurrently I am testing the coap_client and https_client sample application with nrf9160 based custom board. But the board is continously resetting while searching for the network. But after 5 - 10 attempts connection is established with NB-IoT and sampleen-USTelligent Community 13Sat, 04 Apr 2020 17:34:44 GMThttps://devzone.nordicsemi.com/thread/243485?ContentTypeID=1Sat, 04 Apr 2020 17:34:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f4fd5921-0b8c-4d78-803f-eb964dd46f92Navin Sankar<p>Yeah. The issue is with power supply and programming cable connector. Since it is a custom board. For modem based application it&#39;s consumes more power compared to non-modem applications. Thanks for supporting.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/243345?ContentTypeID=1Fri, 03 Apr 2020 09:21:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5f592ec4-523a-4b58-8e7b-b69272bc3769Martin Lesund<p>Hi Navin,<br />Are you testing the applications with default settings?<br />if not what changes have you made?</p> <p>What network are you trying to connect to? (+ what SIM card are you using?)</p> <p>On some NB-IoT networks, we see that using &quot;legacy PCO&quot; can help things out.</p> <p>e.g. put <a href="https://github.com/NordicPlayground/fw-nrfconnect-nrf/blob/master/lib/lte_link_control/Kconfig#L94" rel="noopener noreferrer" target="_blank">this configuration </a>in the prj.conf file of the sample:</p> <p><pre class="ui-code" data-mode="text">CONFIG_LTE_LEGACY_PCO_MODE=y</pre></p> <p>Are you able to connect to the network by just using AT-Client sample and sending AT-Commands?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/243067?ContentTypeID=1Thu, 02 Apr 2020 02:12:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ed58bea8-c637-445b-8663-9caf1be54b5bMartin<p>Did you check the power supply?</p><div style="clear:both;"></div>