nRF9160 Cannot connect to LTE after 30x modem on/off

RE: nRF9160 Cannot connect to LTE after 30x modem on/off

Sigurd — Wed, 20 Nov 2019 14:32:05 GMT

[quote userid="15146" url="~/f/nordic-q-a/54112/nrf9160-cannot-connect-to-lte-after-30x-modem-on-off/219288"]It will be fixed in the next modem firmware release(v1.1.0)[/quote]

Modem firmware v1.1.0 is now released. Can be downloaded from this link.

RE: nRF9160 Cannot connect to LTE after 30x modem on/off

miked531 — Thu, 14 Nov 2019 06:18:14 GMT

Why do you say that PSM would be a better solution for deactivation? My project is similar in that it doesn't need cell network for long periods of time (60 minutes)

RE: nRF9160 Cannot connect to LTE after 30x modem on/off

Sigurd — Fri, 08 Nov 2019 12:52:36 GMT

Hi,

[quote user=""]If this is being blocked at the modem firmware level then I believe this is a bug with the modem firmware.[/quote]

You are correct. I can confirm that this is a modem firmware bug. It will be fixed in the next modem firmware release(v1.1.0). I expect it to be released within 1-2 weeks.

[quote userid="84440" url="~/f/nordic-q-a/54112/nrf9160-cannot-connect-to-lte-after-30x-modem-on-off"]I'm also exploring the usage of PSM, but I've found very little documentation for how to actually implement this on the 1.0 release of the nrf SDK.[/quote]

I believe it would be better to use PSM than deactivation if sleeping "only" 30 minutes. You can take a look at this sample here that uses PSM. If you still have issues with PSM, please create a new dedicated case for that.