connecting iphone to ipad via bluetooth

For some reason my iPad won't recognise my iphone while it looks for devices with bluetooth. A couple of my friends have already successfully paired their devices to my ipad. Is there something wrong with my phone or am I missing something? Please help me out with any information, just trying to sort this out asap so I can play the scrabble application I just downloaded. Both my ipad and iphone had bluetooth on when I tried to pair them.
Thank you 🙂