We have both an iPhone 4 and 4S in the house and every one of our calls has been dropped for the last few months. We live on top of a hill, have had Mac Air Port WiFi and 2 cordless phones since before the dropped call problems started. Reception is fine outside but not in the house. We are in Yorktown Heights, NY 10598 on the border of Somers. Anybody have any ideas? Thank you for your help.