I Have WAP R Router and OS Version V7.4. ITE firmware is “MikroTik_CP_2.160.000_v020”
The LTE interface not working if I enabled 3G Only. in the previous OS version 6.49.6 that work 3G only. anyone have idea??? because there are some locations that not have LTE Signal.
I believe there are locations that do not have 3G coverage too…
Signal level is low. but i think it is enough to connect. LTE interface also running. but it will not connect internet. without any other changes it will work if I change only network mode to the LTE.

/interface lte
set [ find ] allow-roaming=yes band=“” name=lte1 network-mode=3g
/interface wireless
set [ find default-name=wlan1 ] ssid=MikroTik
/interface lte apn
set [ find default=yes ] ip-type=ipv4 use-network-apn=no
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip neighbor discovery-settings
set discover-interface-list=!dynamic
/ip settings
set max-neighbor-entries=8192
/ipv6 settings
set disable-ipv6=yes max-neighbor-entries=8192
/interface ovpn-server server
set auth=sha1,md5
/ip dhcp-client
add add-default-route=no interface=ether1 use-peer-dns=no
/ip dns
set servers=8.8.8.8
/ip firewall filter
add action=drop chain=input dst-port=21,22,23,53 in-interface=lte1 protocol=tcp
add action=drop chain=input dst-port=53 in-interface=lte1 protocol=udp
/ip firewall nat
add action=masquerade chain=srcnat
/system logging
add topics=lte
Changing network mode to something else then 3G only does make it work ?
Did you already verify if a new firmware is available ? In your screenshot “Check Firmware”.
If a newer version is available, select Upgrade.
Unfortunately, as it is now, that part can only be updated over the LTE connection (as far as I know).
CAREFUL: preferably ONLY to be done when you’re connected to the device directly.
I had one occasion with a device 930km away and the update went wrong … some weeks before I was able to get on site and do a complete reset to restore functionality.