Can you use H2O iPhone 5 with cricket?

I got an iPhone 5s from a friend. It used H2O carrier and off contact. I use cricket and was wondering how to switch over. I want to keep cricket but I don't know if the new iPhone is locked or not. How can I unlock it to use cricket?

If you bring it into Cricket, they'll be able to tell you with certainty. However, just by googling it, it appears that it would be possible. Here's why: (this will get technical)

Okay, so if you look at the link in the source, it says H2O uses the AT&T network. It says the same thing for Cricket, therefore if you have an H2O phone, it should also work with cricket. Hope this helps.

Yes you can and if you are planning to buy one do install and also try Leo Privacy Guard in order to secure your important apps from others.