First to state. No real issues with the ip4. Sure AT&T so dropped here and there but not enough to moan. That said I'm dropping left and right with the 4s. Dropped 4-5 calls today from my house. The last one was during a light congestion period. After dropping the phone shows searching then after ten seconds or so 4-5 bars. Am I alone in this? Anyone else noticing substantially more dropped calls on the 4s? AT&T issue? Phone issue? AT&T states no issues with tower in my area and 'refreshed my connection to the tower'. Thoughts?