https://devzone.nordicsemi.com/f/nordic-q-a/119967/nrf9161-sim-lte-connectivity-issueHello, We are trying to test our custom board with nRF9161 in a new location, so we bought local SIM cards (Yettel, Serbia) here. These are not special nb-iot SIMs, just prepaid SIM cards with lot of 4G GBs. The salesperson assured us that the carden-USTelligent Community 13Thu, 20 Mar 2025 07:56:42 GMThttps://devzone.nordicsemi.com/thread/528139?ContentTypeID=1Thu, 20 Mar 2025 07:56:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8f6d610b-0a38-4a97-9a81-09ad6dce30c1&#216;yvind<p>Hello Sergei,&nbsp;<br /><br />Please ensure that the SIM cards support NB-IoT and/or LTE-M, i.e.&nbsp;<span>&nbsp;low-power wide-area network (LPWAN) technology as the nRF9161 does not have support for standard 4G/GSM technology.&nbsp;</span></p> <p><span>More information can be <a href="https://docs.nordicsemi.com/bundle/ncs-2.9.1/page/nrf/protocols/lte/index.html#lte-m_and_nb-iot">found here</a>.</span></p> <p><span>Kind regards,<br />Øyvind</span></p><div style="clear:both;"></div>