Iphone 4s text message issue?

My iphone 4s has been making the noise for a text message recently and when i unlock my phone there's no message, it will do this probably 2-3 times per week. Is my phone damaged?

You might have your texting sound set up for a different notification as well. My email and my text messages were the same tone and I didn't realize it and had to change it so I could tell the difference. & You shouldn't need to unlock your phone just to see if you have a text message because it is displayed on the lock screen

  • Will my message be delivered if sent as text message on iphone? My friend said that she was having phone problems earlier today. My message was being sent as an imessage, but I guess she wasn't receiving everyone of them, just getting the notifications that they were sent to her but she couldn't read them. I then responded to her, but it was sent as a text message this time and i have gotten no response. I'm not as much concerned about her responding or not, I just want to know if she will receive the message.
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