At just $250 (£200 or AU$340 converted), the LeEco Le S3 is a competitively priced phone that offers decent hardware. In addition to its 5.5-inch display, it has dual-SIM capabilities and runs Android 6.0 Marshmallow.
The Le S3 is an affordable phone if you're on a budget, but there are other options. The Motorola Moto G4 Plus has expandable memory and it's water resistant. The Asus ZenFone 3 is even cheaper and has a more advanced camera that includes laser-guided autofocus.