Thank you, readers! I used your advice to help me get a new phone.
Partially. The store only had one type of iPhone available, which I like to call "something the salesman should have mentioned earlier". In good news, I didn't have to worry about data plans because my parents set one and--Really? I have to go with the one Mom and Dad picked?!
Anyway, thank you for all your help. I got the iPhone 5S, which I believe is the best phone you can get, next to the one that's about two weeks old. I will definitely take the advice of using the Internet through wifi, instead of using phone-Internet.
Now my main challenge will be figuring out how to send cat pictures to my fiancée, via the messenger app. I can do that on Facebook, but talking to her makes up about 90% of my Facebook activity. I'd like to cut out the middleman and just do it directly to her phone.