If you absolutely have to go with Sprint prepaid, then do so. Otherwise, consider Boost Mobile.
You can't bring your own phone to use on a Sprint prepaid plans, which makes things pretty difficult since Sprint's selection of prepaid phones is subpar (and that's putting it very nicely).
If Sprint prepaid is your only option, then we're able to begrudgingly recommend a couple of their phones to you in the Moto E and the iPhone 5s.
If these choices seem dismal, you're right. However, Boost Mobile, which is owned by Sprint and runs on Sprint's network, is a prepaid carrier that offers a much larger selection of phones where you can find current models like the Samsung Galaxy S7 and the iPhone 6s Plus.
So, check out Boost Mobile if you're tied to Sprint's network but not necessarily Sprint. Otherwise, we've picked out the only two phones that are worth a mention from Sprint's prepaid phones selection.
Motorola actually did a great job of changing the low-cost phone game – they made phones you'd actually want to use. The Moto E may be two steps down from the Moto X, but it still has something to offer those of you that are on a budget.
Running on Android 5.0 Lollipop, the Moto E offers up to 21 hours of talk time, thanks to its decently sized 2,340 mAh battery. It only comes with 4GB of storage, but that can be expanded an extra 32GB with a microSD.
Running Lollipop means you do have access to every app in the Google Play Store; you'll just have a hard time fitting much on the phone itself.
It's a great value; it's just 2 years old at this point and way behind the super phones of today. However, if you must go Sprint prepaid, this is the Android phone to go with.
The only other phone that we can deign to recommend is the iPhone 5s, and that's only because some folks would rather go the Apple route if they have to go with Sprint.
The 5s offered from Sprint is as bottom-of-the-barrel as it gets, coming only in the 16GB gray version. iPhones have no expandable memory, so be prepared to constantly back up photos and other precious memories because 16GB fills up quickly.
That being said, it does have a few more bells and whistles than the Moto E, with its A7 processor and fingerprint scanner. The camera is also 8MP, which isn't too shabby for a budget phone (even though it was once Apple's flagship).
The added benefit of Siri is another boon to the iPhone 5s, since you can make calls and send texts virtually hands-free.
If you have to go with Sprint and you have to go with an iPhone, then this is your best (and only) option.
Go with Boost!
Once again, if you absolutely have to go with Sprint and prepaid is your only option, then consider Boost Mobile, which is owned by Sprint and runs on their network. Their selection of phones is much more favorable and you may end up spending less too!