Cannot connect to LTE using at_client sample, AT commands timeout

millocorona

Hi, Im having some trouble while trying to connect to the LTE network using my Hologram SIM, the problem is the following

I followed the instructions for the at_sample, compiled it, flashed the board, etc, but when I do the steps of presing AT+CFUN? and AT+CFUN=1 and then again AT+CFUN?, the board sometimes does something, like its trying to connect but it never does, I noticed, that after some random time, all the commands that i send through the AT monitor, timeout, sometimes, it reaches the point of executing the AT command

AT+CIMI

but other times, it simply stops at the second command, does anyone knows how to solve this problem?

jaredwolff

millocorona it’s possible that you don’t have coverage through Hologram where you are. (Where are you located again?) I’m assuming you have the antenna connected on the correct port? (Newer boards have a label underneath each connector)

millocorona

Hi, I’m located in Mexico, and hologram its available here, and yes, the Antenna is attached to the board

jaredwolff

millocorona Looks like hologram supports LTE 4G but not CAT M1. So the nRF9160 Feather may not work with Hologram. Do you know if one of your carriers down there has support for Cat M1? Is it potentially possible to get a SIM from them?

I also looked up Soracom’s coverage. They don’t have CAT M1 either.