How to keep sharpie on an iphone?

I want to get my phone signed by my favorite band if i meet them and i don't want it coming off. They will either sign the phone or ill get a clear case. Which one would be better to sign? And would like mod podge keep the signature on it? And any advice?

Take soap and rub it really hard on the phone

Get a clear case or some kind of matte surface for a case. When you get home after the concert, apply a layer of clear coat to prevent the signature from being rubbed off.

  • Will sharpie be permanent on the back of my iphone 5? Like let's say I meet someone famous and they sign the back of my iphone 5 will it stay there or will it run off. If sharpie isn't permenant what pen is?
  • Why does it hurt when you put sharpie on your skin & then take a picture with flash on the iPhone? Okay, so there's this thing at my school where you do this: 1. Draw a black sharpie square on your hand 2. Take off your phone case 3. Put your phone camera directly on the skin where your sharpie mark is 4. Turn on the flash on your phone and then take a picture. It hurts and stings a little bit. It's like a small shock. Why is that?
  • Sharpie signature on iPhone 5s? A famous person signed the back of my gold iPhone 5s today and part of it has already smudged. I was thinking of getting a clear case, but what can I also use to make it permanent? I can't even touch it without worrying about rubbing it off!
  • Keep Sharpie autograph on iPhone? I recently met my absolute idol Ariana Grande. She signed the back of my iPhone 5 in Sharpie. What can I do so that it doesn't rub off when I use it or when it rains?