ContributionsMost RecentMost LikesSolutionsTruma i Net box I have a Smarty sim in a Truma i Net box in a Motorhome. The I Net controls the heating by recieving and sending out txt messages. I cannot get it to work in the UK but as soon as I cross to France it worked perfectly and when back it the UK it would not work again. I have tried a Vodafone SIM in the Box and that works in the UK
