https://devzone.nordicsemi.com/f/nordic-q-a/96626/nrf9160-does-not-automatically-switch-to-prefered-lte-type-after-successfully-connecting-to-fallback-typeIn our application we recenlty changed implementation where we handled nbiot/ltm switching manually to using lte preference mechanisim offered by modem fmw 1.3.x. In general preference works as expected. But during testing in an emulated network envoirnmenten-USTelligent Community 13Wed, 15 Feb 2023 11:52:36 GMThttps://devzone.nordicsemi.com/thread/410054?ContentTypeID=1Wed, 15 Feb 2023 11:52:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7cb4311f-52c5-405f-bd40-a6b715584ca4&#216;yvind<p>Please see&nbsp;<a href="https://infocenter.nordicsemi.com/topic/comp_matrix_nrf9160/COMP/nrf9160/nrf9160_modem_fw.html">compatibility between nRF9160 modem firmware and nRF Connect SDK versions</a>, which shows what we have tested modem FW against. We cannot guarantee correct functionality between NCS 1.3.2 and modem FW 1.3.0</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/410050?ContentTypeID=1Wed, 15 Feb 2023 11:42:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e614f419-549b-4b85-ad5a-9e07ff59c5b3&#216;yvind[quote user="Umer Mahmood"]We are on ncs 1.3.2.[/quote] <p>nRF Connect SDK v1.3.2 is very old. Are you sure you mean NCS and not modem FW 1.3.2?<br /><br /><br /></p> [quote user="Umer Mahmood"]The expectation that modem should switch to prefered network when it becomes available, even if it has a good connection with Fallback network comes from this&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/92107/xsystemmode-with-nb-iot-and-lte-m-enabled-mfw1-3-x">thread</a>.[/quote] <p>Thanks for clarifying.&nbsp;</p> <p></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/409942?ContentTypeID=1Tue, 14 Feb 2023 18:26:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2a32aa57-f038-4889-b994-3a93e389c745Umer Mahmood<p>The expectation that modem should switch to prefered network when it becomes available, even if it has a good connection with Fallback network comes from this&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/92107/xsystemmode-with-nb-iot-and-lte-m-enabled-mfw1-3-x">thread</a>.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/409941?ContentTypeID=1Tue, 14 Feb 2023 18:23:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:493a96fa-a296-4528-bd5a-142648358bc5Umer Mahmood<p>We are on ncs 1.3.2. As mentioned above we are able to connect to the fallback network but once the prefered network comes back modem still stays connected to the fallback network.&nbsp;<br /><br />We are not using a bandlock. And we are not using&nbsp;<span>CONFIG_LTE_NETWORK_USE_FALLBACK.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/409830?ContentTypeID=1Tue, 14 Feb 2023 11:52:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:039ef9ce-2681-46f7-842e-e26042be69fe&#216;yvind<p>Hello,&nbsp;<br /><br />Can you provide more information on what version of nRF Connect SDK you are using? We will need more information on how you have configured your application and handling this.<br /><br />Are you using&nbsp;<span><span>CONFIG_LTE_NETWORK_USE_FALLBACK as <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.2.0/nrf/libraries/modem/lte_lc.html#connection-fallback-mode">according to the LTE Link Controller</a>?</span></span></p> <p><span><span>Kind regards,<br />Øyvind</span></span></p><div style="clear:both;"></div>