The modem I have, since I have (2011), have hardly ever off. It runs and runs and nothing it seems out of step bring. We live here a little on A ... the world and LTE Vodafone is our only Wireless wire to the digital world. We live literally behind the forest and have no line of sight to the transmitter mast. With Dabendorf antenna on the chimney and high quality Low Loss "Aircell 5" cables from Reichelt.de we even have a line over as if you are the only modem in the attic. The twin cables often available with the antenna were not worth their money. They took the path which led to the antenna gain .....