iPhone 4 locks up when text is received – help!
Hi, I'm hoping someone out there can help me with my dilemma. Frequently (but not always), when I receive a text when my iPhone is not in use, the home screen locks up and I cannot "slide to unlock." I can pull the screen up from the bottom with the shortcut options (camera, calculator, etc.), but then cannot pull it back down or do anything until I power the phone off and reboot it. When I reboot it it unlocks just fine. It's very annoying to have to do this several times a day, not to mention that the person who contacts me wonders why it takes me so long to reply (they don't know I'm having to do a reboot to just unlock the phone). If the phone is in use and unlocked when the text comes in then it doesn't freeze up at all.
Would appreciate it if anyone has suggestions on what the problem might be and how I could fix it. Thanks!