Can you delete iMessages without entering the app?

Okay, this will sound really dumb, but I copied and pasted a word so many times and sent it to a friend, then now whenever I enter iMessage it freezes and exits out of it. So, obviously I'm trying to delete the message so it gets out of my phone but it's freaking out and won't let me! Please please help!
( I have an IPhone 5c)

Hold the power button and the home button for 15 seconds this will reset the phone.

  • Why is my Iphone not sending as Imessages and receiving iMessages from one person? I'm texting my wife and we both have iPhone's and she is getting the messages as an iMessage but the ones I'm sending her on my end show up at green. Sometime it will go as blue, get the little red exclamation point then send as regular SMS. I'm texting someone else too and she has an iPhone, and she is getting mine as regular iMessages and mine are sending as regular iMessages. Why aren't they sending to me wife as iMessages?
  • What happens after incorrectly entering a PUK code 10 times? My sister brought home an Iphone 4 or 4s from work a couple years ago after no one claimed it. I never touched it until now just looking through it. Well the Sim is locked ofcourse and there's no password on it. All I want to do is play games so what would happen if I put in the wrong PUK 10 times? Can it erase everything? Will it notify the carrier? Will it entirely lock me out? What happens if I factory set?
  • No Service on iPhone 3 when entering a new sim card? I'm trying to set up this iPhone for my uncle. My mom gave it to him for Christmas, it was hers. It's in perfect condition and everything. I restored it, reset network settings 3 times. But I'm still getting the "No Service" thing. Is there any way to fix this without contacting his service provider? AT&T, by the way. Not a faulty sim card, either.
  • Is tbere any major différence between thé iPhone 6 and the 6s? Whooppeee is Xmas again and my daughter wants new 2nd hand) iPhone… 2 years ago almost bought her 5 before i réaliséd that it was 5s she wanted ( cos thé 5 sucks?) And I don't want to screw up this year…