Lately people who call me on my cell phone have been telling me that I sometimes sound garbled or like I'm under water. My phone has full reception when this happens, but I've noticed it mostly occurs when I'm in my apartment. Could it just be that despite full service, the building itself interferes with the...waves or whatever? (I'm totally ignorant of how cell phones actually work)
By the way, my phone is a Nokia and is a little over two years old.