While I'm waiting on a response, I'll recap my experience so far so others have an idea of what to expect.
I am having signal strength issues to the extent that I cannot make or receive calls indoors at home. The phone shows 0 bars. I have two additional Straight Talk phones that have 75 to 100% bars at all times in the exact same same location.
On July 27th, two days after posting originally, I received a PM response from straight talk asking for the phone serial/MEID number. I couldn't respond to the PM since the forum requires at least 5 posts before you can send messages to a moderator. I made the 5 posts and waited 4 days for them to be approved by a moderator so I could send the numbers via PM.
3 days after that, I got a message telling me to remove the battery from the phone for 1 minute and replace it. I did that and nothing changed, so I sent another PM letting them know.
The next day, I got a message back asking for my address to check the area coverage. I sent a reply.
A day later, I was given instructions to reprogram the phone via a forced download. I completed that and now can sometimes get 1 bar to show up, but the phone is unable to maintain a call for more than 5 seconds without dropping the call if it can call out at all. I'd estimate about a 50-50 chance of it even ringing when called.
I sent back another PM letting them know that the phone was still not working correctly (this was yesterday) and haven't heard back as of today.
So far the entire process has taken almost 2 weeks (1/2 of the pre-paid monthly service) with no solution in sight.