We have a Huawei B315-3704 router thru Farmside and they said to set it at 3G. We do not need an aerial as we are in line of sight of the tower. Our speed has slowed down to 7mbps so I changed the setting back to the other option and the speed has increased. Farmside say I should keep it at the 3G setting. Our neighbour brought his modem (the same model) up and he got 32mbps with it sitting beside our, while we still got 7 mbps. Farmside said its because his modem was picking up 4G!! They say to get 4G speeds we need an aerial. Surely there is another way we can get those speeds without having to drill holes in the house, as we can see the tower. Any suggestions?