I had one of these for a while: https://www.amazon.com/Wilson-Electronics-Signal-Booster-Office/dp/B0014KOB6Y https://www.amazon.com/Wilson-Electronics-Signal-B

I had one of these for a while: https://www.amazon.com/Wilson-Electronics-Signal-Booster-Office/dp/B0014KOB6Y https://www.amazon.com/Wilson-Electronics-Signal-Booster-Off... Worked well enough. Looks like 4G models are more expensive. (No longer need it as I'm with Republic Wireless now.)