I am having a signal issue since I have upgraded my phone to the latest Android version (2.3.3). Every once in a while, lets say 1/5 phone calls, the call drops at the middle of my conversation. my Signal Strength changes non stop, from around -60 dBm to -95dBm I traveled to Armenia for 2 weeks and used the same phone with a local provider with a different SIM card, I had no any issue for these 2 weeks. back to my country (Lebanon), the problem is back aswel I even changed my SIM card! I contacted HTC and followed all their guides, nothing helps. Is the problem from my provider? or a software/hardware problem? Is there any way I can downgrade to 2.3.2 Android? thanks for your help!!