If you're looking for a cheap smartphone that's
unlocked and offers generous battery life, you should check out the Blu Life
Max.
The handset cost US$ 129.99. Running Android Marshmallow, the Blu Life Max sports
a 5.5-inch 720p display, and packs a 3700 mAh battery - according to Blu, this
battery can last up to 3 days "with standard usage." Other features
include a fingerprint scanner on the back, a quad-core 1.3 GHz MediaTek MT6737
processor, 2 GB of RAM, and 16 GB of expandable storage space. As for cameras,
the smartphone has an 8 MP rear one, and a 5 MP front-facing one, both with LED
flashes.
The Blu Life Max is a GSM/LTE device, which means
it's compatible with AT&T, T-Mobile, and other GSM carriers, but it will
not work on Verizon, Sprint, and US Cellular.