1. Mint Mobile

Mint Mobile has some of the cheapest plans available. Their 12-Month Unlimited Plan is a particularly meaty offer, with unlimited talk, text and truly unlimited high-speed data at just $20 per month with a temporary discount. This is the perfect plan for single-line customers seeking value over the long term. On the other hand, Mint Mobile's 5GB Plan runs $25 a month.

2. Visible

For $25 a month, you can get unlimited talk, text, and data from Visible, an affordable carrier that’s actually backed by Verizon. It includes Verizon's network and mobile hotspot access. People who want a higher-end experience can get Visible+, which costs $35 a month and includes access to 5G Ultra Wideband and international calling. And right now, there's a deal where you can get Visible for $20 a month for 25 months, and Visible+ for $30 a month, using the code SWITCH25.

3. Verizon

Verizon offers the Unlimited Welcome Plan. It is priced at $65 per month per line, and it is an unlimited data, talk, and text plan. If you'd rather handle your payments in advance, Verizon is offering its 15GB Prepaid Plan for $35 a month when you sign up for AutoPay. This plan comes with 15GB data and best suits users who are looking to stay away from commitments.

4. Tello

With the pay-as-you-go system called “Build Your Own Plan” by Tello Mobile, you will get a lot of flexibility and a lot of bang for the buck. You can personalize your data and voice minutes to fit your needs (it has plans that start at $5 a month for 1GB of data and 100 minutes of voice). This flexibility makes it great for low-data users or those looking to save a buck each month.