Spending too much on your phone service? You could maybe cut that bill down a bit, if you're willing to make a few sacrifices. How does free sound? FreedomPop, which previously started offering free mobile and home internet access, is expanding into phone service. For $0 per month, you can get 200 voice minutes, 500 texts, and 500MB of 3G/4G data.
This is obviously not a plan for heavy data users, but 500 MB might be workable if you're on WiFi most of the day.