Ok, you're right about that.
Apple solution is useless? So...
Warrenty? Replace it!
Not in warrenty? Pay a reduces price and fix it.
This is clear for everybody I think.
But why people can't share opinions about that?
Maybe someone found a solution that can be home made (ok, that's really hard, but it can happen).
My next step is to disassembly iPhone and check components to the electronic microscope. I hope to find some capacitor or resistence that is not well welded...
Is difficult to explain in english, but I want to try.
My job is repairing hardware devices for knitting machines.
We use THT, SMD and BGA technology.
The Murata IC that manage WiFi and Bluetooth is a BGA component, so is very hard to replace it, literally IMPOSSIBLE without particular machines.
Some say that air-drayer and freezer helps. Ok. Let's see some pictures about capacitor and resistors:
Capacitor (very dirty): http://upload.wikimedia.org/wikipedia/commons/4/49/SMD_capacitor.jpg
Resistence: http://store.curiousinventor.com/media/images/guides/smt/1206_done.jpg?124841335 5
Sometimes the metal pad of both devices can broke, resulting like an open circuit.
If you expand or contract (depends which part of the device is broken) you can connect the pad to the body, so the circuit resulting close. Maybe is for this reason that some iphone works with freezer and some with hot air.
This is my opinion, I'll do it at my own risk. I'm out of warranty but I've got professional instruments to do it, so don't follow me. I'll do it and I'll let you know.
This is the sense of this discussion, I think...
Sorry for my bad english.