LTE connection problem......

RouterOS Beginner Basics
1

I've got Chateau lte12 and set up it via instruction on net....And here come a problem.....I've got 2 SIM cards from different operators. But with one SIM card everything works fine, but with another there is no internet. Link is up and I see traffic on LTE interface but no internet.....sometimes in control panel I see that have Internet access but this is not true....Most of the time in control panel is No internet......Is it possible that this ISP provider block me when I want to connect cos SIM card is for mobile internet ?

Here is my config:

feb/20/2022 17:43:32 by RouterOS 7.1

software id = 005S-1G8Z

model = D53G-5HacD2HnD

serial number = D7B10E08BA10

/interface bridge
add name=bridge1 protocol-mode=none
/interface lte
set [ find ] allow-roaming=no band=3 name=lte1
/interface wireless
set [ find default-name=wlan1 ] disabled=no mode=ap-bridge ssid=MikroTik wireless-protocol=802.11
set [ find default-name=wlan2 ] country=croatia disabled=no mode=ap-bridge ssid=MikroTik wireless-protocol=802.11
/interface list
add name=WAN
add name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip pool
add name=dhcp ranges=192.168.88.10-192.168.88.254
/ip dhcp-server
add address-pool=dhcp interface=bridge1 name=dhcp1
/port
set 0 name=usb1
/interface bridge port
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
add bridge=bridge1 interface=ether5
add bridge=bridge1 interface=wlan2
add bridge=bridge1 interface=wlan1
/interface list member
add interface=bridge1 list=LAN
add interface=lte1 list=WAN
/ip address
add address=192.168.88.1/24 interface=bridge1 network=192.168.88.0
/ip dhcp-client
add interface=ether1
/ip dhcp-server network
add address=0.0.0.0/24 gateway=0.0.0.0 netmask=24
add address=192.168.88.0/24 gateway=192.168.88.1 netmask=24
/ip dns
set servers=192.168.88.1
/ip firewall nat
add action=masquerade chain=srcnat out-interface-list=WAN
add action=masquerade chain=srcnat out-interface-list=WAN
/system clock
set time-zone-name=Europe/Zagreb
/system clock manual
set time-zone=+01:00
/system routerboard settings
set cpu-frequency=auto

2

You have problem with masquerade rules.

Instead of use interface list, use directly the LTE interfaces separately.

Regards.

3

Maybe, but the config does have lte1 in the WAN interface which already masquerade’d.

I’d start with does ping 8.8.8.8 using the lte1 interface work? e.g. does the SIM card connect to a valid/working network…

Also, it looks band locked, you might try removing that, if you can’t ping.

4

Thanks guys for help…the problem is solved by cheking in IP → DNS Allow remote request.
It is strange how with one ISP everything works without that…