I have purchased a number of M7200's for families of our schools who have no wifi so the children can continue their learning from home. I have tried a number of sim cards in a number of M7200's but none of them have an internet connection although each laptop/chromebook I use can locate the M7200.

I have also used the same sim cards on a batch of KUWFi dongles and they work so it is not the sim cards.

Please can someone explain how I can get them working as I really need to get these out to our disadvantaged families.