6. BLU Studio XL 2
I will immediately reveal you that you will see BLU often on this list of best unlocked smartphones under $200. The company is the king when it comes to selling cheap unlocked phones. If you want a big smartphone, 6.0 inches Studio XL 2 should do. It comes with Dual SIM capability, Quad-core 1.3 GHz processor, 2GB of RAM and 16GB of storage alongside 13MP rear and 5MP front cameras.