I’ve written in the past about some of the solutions people have come up with to deal with the dreaded “No-Service” message on an iPhone. But yesterday I realized I’d forgotten one of the easiest to try: make sure your hand is not covering the antenna. Covering the antenna accidentally may not cause you to see “No Service” but the effect will be the same – no bars at all.
Check that your hand is not covering the thin black line on either side of the metal band around the phone, toward the bottom. Move your palm away from it and possibly try restarting the phone. With as much publicity as this got a few months ago, I still forget now and then.