I have WG3526 router the problem it work with 3 network from uk no issue however with
Vodafone Spain it will not what ever I put the sim pin etc nothing firmware is 19.1101 any one can help how to unlock Vodafone sim ? Thank you
19.1101 doesn't sound like openwrt.
I'm pretty sure we don't do modem unlocks 
It sure is since it will not
Open even if I add the pin of the sim just not
Work
However when I put 3 network sim from uk just plug it in all working. I can use the uk sim it have his limit I’m the Vodafone have no limit on the sim