i have an iphone 5 with tmobile, my apartment practically gives me no signal at all as soon as i step inside the apartment, on my iphone 5 d(apparently because of the amount of concrete around my apartment) does anyone know if this signal booster will work for the iphone 5? if not, can anyone recommend me any other devices that will help my situation and is compatible with the iphone? here's the link:

http://www.amazon.com/T-mobile-Cel-fi-Repeater-Booster-Nextivity/dp/B00BTN02HS