How to increase the memory capacity on my iPhone 5c?

So I finally got my dream phone, the iPhone 5c and it's great, but it only has 5gb available on it?! And it just isn't enough memory for me because it is so small… So I was wondering, what options do I have about increasing the memory on my iPhone? I know it's impossible to manually replace some memory chip inside the iPhone but I didsome research and it turns out you can just get wireless or wired memory cards that can be linked up to the iPhone and it gives you more space! Is this a scam? And if it isn't, what is the best one to get?

Since the firt iPod in 2001, Apple portable devices can't upgrade their storage. It's 100% intentional because it's incredibly profitable. And I don't know why, almost nobody think it's a ripoff.

Your best bet is to get another iPhone with more storage, or, an Android phone. Wireless memory? IOS doesn't support it natively (I bet it only swaps user data) and should be a lot slower than built-in Flash RAM. Your memory replacement theory is too risky and too expensive.