We are in a new condo, built in 2010, and cannot get a cellphone signal within our apartment. Stepping out on the patio is the only way we can use our cell phones. Is this Verizon;s responsibility or is there some kind of device I need to buy? I cannot drill through the exterior walls to run any kind of line so, the device must either be installed inside or have some sort of wireless feature. I do have an electrical outlet on the patio. Any suggestions will be most helpful.