Phone recs?

Hi,

I'm a high schooler getting a phone for the first time. Looking for something semi-cheap, will use the phone for texting, calling, apps to keep me company. I'll be using it for a summer program for 4 weeks.

Do you guys have any recommendations for what phone to get (iPhone/Samsung), and are there any deals I should be aware of to cut costs? I heard iPhone have much easier use since they are much more widespread, but are also a lot pricier as well. Also, any carrier recommendations?

Thanks.