I had to purchase and install a network extender after I upgraded to a 6+. Now my calls aren't dropping anymore but there is interference on every single call I make or receive at home. The speech of the other caller is so garbled and full of static I can barely understand them, which makes phone calls very tedious. It is easier to text. If I unplug the extender the static is gone but the calls drop. I have contacted tech support and gone into the store, they have replaced my phone, not that it was the problem anyway (because the problem only exists when I am at home), I have read the network extender manual, changed its position, etc. I have literally spent hours and hours trying to solve this problem but it persists. I hope someone can give me a solution.