When both LTE and 3g is enabled it connects HSDPA first then LTE but only once after a reboot. If the link goes down and comes back up it connects to HSDPA and never "upgrades" to an LTE connection. I've even changed the Preferred PLMN list with the AT+CPOL modem command.
Disabling and re-enabling the modem does not fix the problem. In order for the modem to connect to the network at LTE speeds again I have to reboot the whole device.
Update
I've added the follow script to run every few minutes to try and force it to connect to the LTE network.
Code: Select all
if ([/interface/lte/get value-name=running number=0]) do={
/interface lte at-chat lte1 input="AT+COPS=1,2,\"65501\",7"
} else {
/interface lte at-chat lte1 input="AT+COPS=1,2,\"65501\",6"
}
