Hello, I was a fool and downloaded an APN altering tool in efforts to turn off 3G with a switch so I can conserve battery. Unfortunately, efforts fail and now I can't receive or send MMS messages at all. My 3G is present, data works, but even on the wi-fi my MMS fails me. After doing a bit of digging, the APN thing seems to be the reason. How do I repair this without going about a hard reset of my phone?