I'm not sure if anyone else is having the same problem with the signal strength but the signal goes from having 5 bars to having no bars at all and then goes back up. Sometimes it stays with no bars for a while. This has been happening outdoors. I bought the phone when it first came out and about a week later I went to the store and it was changed but I'm still having the same problem with the phone. I'm not sure if its the phone or its some software issues. I have also had the issue on calls where the person on the other side can hear me but I can't hear them. This has happened several times.