The internet is not working. We bought 2 tablets for the business. We also bought 2 Multidevise voice cards with unlimited data. We have inserted them in slot 1. As soon as the sim is in, it shows 4G data network. Now when someone on the site wants to open a plan or sketch, it doesn't work. The internet seems to be throttled, the tablet reaches a maximum of 3 Mbps for downloads (normally everything is over 60 Mbps). It can't be due to the SIM cards, as we have replaced all of them once and requested new ones. Does anyone know the problem? Thank you