It was just yesterday that Sprint had started rolling out the Android 2.3 Gingerbread for its greenest Android phone – the Replenish.

Now, Boost Mobile, a local network operator in the United States, has announced that it will also be offering the Replenish under its network. For the unknown, here is a quick reminder about the specs of the handset – 600MHz processor, 2.8-inch HVGA resolution screen, GPS, Bluetooth, Wi-Fi, 512MB RAM, 2MP camera, and a QWERTY keypad.

Like on the Sprint’s network, the Replenish is also the greenest handset on the Boost network, and consists of  up to 83% recyclable materials.

Boost will also be offering a “green benefit” program, where users can trade-in their old handset for the new Replenish or by making on-time payments with the carrier’s $55 unlimited monthly plan. The company will give a $5 discount to the user for every 6 on-time payments. Eventually, the Boost mobile user can enjoy unlimited text, data and calls on his Replenish for $40.

The Replenish will hit the Boost network on January 16th, and will be the carrier’s first sub-100$ phone.