NotifyOnReboot

:delay 15;
/tool sms send lte1 <phone> message="Mikrotik LTE rebooted successfully"

RemotePingCheck

:local continue true;
:local counter 0;
:local maxcounter 10;
:local sleepseconds 5;
:local goodpings 0;

:while ($continue) do={
    :set counter ($counter + 1);
    :delay $sleepseconds;

    :if ([/ping 1.1.1.1 interval=1 count=1] =0) do={
        :log warning "Ping to WAN failed on attempt $counter of $maxcounter - Will try again in $sleepseconds seconds.";
    } else {
        :log info "Internet connection looks up from here. Nothing to do.";
        :set continue false;
        :set goodpings ($goodpings +1);
    };

    :if ($counter=$maxcounter) do={
        :set continue false;
    }
}

:if ($goodpings = 0) do={
    :log info "No internet connection found. Rebooting in 10 seconds";
    :delay 10;
    /system reboot
}