How do i share a project for ios?

I have a project for ios, I have an ipad but the person im sending it to for testing has an iphone. I know that you need to import the provisions/certificates and deploy it to your device for testing. But if I email it to somebody will they be able to test it on their phone or will it only work on my ipad since its registered to my developer account?

Use Testflight to distribute to testers

thank you sir