T-Mobile looks set to follow up the HTC One S with a budget-based smartphone for first-time buyers.  Designed by Huawei, the Prism 3G is expected to feature a 3.5-inch display, 3.2-megapixel camera, 600MHz processor, 512MB ROM, and 2GB storage (microSD).  According to details obtained by TmoNews, the handset will trickle out to Best Buy and Walmart next week, followed by a larger rollout later in the month.  No pricing or official announcement to share at this time.  Considering the specs remind us of phones from days gone by, we cannot imagine T-Mobile able to ask for more than $50 for this thing.