Huge and cheap. eBay (Best Buy) has a BLU Studio One Plus 4G 16GB 5.5in Unlocked Smartphone Sale, $139.99 plus Free Shipping. Rated 4 out of 5 stars.

One of the cheapest no contract Android Unlocked smartphones. How to Buy an Unlocked Smartphone

• 4G speeds on AT&T: Cricket Wireless, Trachoma, Straight Talk, Net10, H20 Wireless, 420 Wireless, Black Wireless, Consumer Cellular, Pure Talk USA, Red Pocket, Telcel America.
• T-Mobile: MetroPCS, Lyca, Speedtalk, Go Smart, Simple Mobile, Net10, Straight Talk, Solavei, Ultra Mobile, Telcel America, Walmart Family Mobile supported in most areas; check with your service provider

Important Information:

Perfect for T-Mobile, StraightTalk or AT&T Wireless. Add a line or replace and older phone.

Consider purchasing an unlocked cell phone if you are on AT&T or T-Mobile and want a new Smartphone without a contract. Unlocked Smartphones allow you to subscribe to low cost carriers mentioned below and function internationally, so you can use the same phone abroad.

Learn: No-Contract Plans, Unlocked Smartphones

Choosing the right plan for you is time consuming and can also be a hassle. We've done the research and you may save over $1,000 each year! Be sure to check out our no-contract Smartphone plan article: How to Find the Best No Contract Smartphone Plans where we compare all of the major network carriers. Check out our How to Buy an Unlocked Smartphones article to learn what it means to have an "Unlocked" Smartphone.

BLU Studio Studio One Quad-Core Unlocked Specifications

• 5.5" display 1920x1080 resolution
• 1.3Ghz Octo Core Processor
• Android 5.1 Lollipop
• 4G
• 8GB Storage
• 2GB Ram
• microSDHC card slot up to 64GB
• Dual Sim
• GPS
• 802.11n Wireless
• 13/5 MPixel cameras