Joining Best Buy and RadioShack, T-Mobile is now taking preorders for its first HSPA+ smartphone, the T-Mobile G2. Preorders are limited to current T-Mobile customers, though. You must reserve your phone by October 4 in order to receive it on October 6, which is when the G2 will be available in stores nationwide. T-Mobile did not disclose the price of the handset, but we suspect it will be around $199.99 with contract. Best Buy is selling the smartphone at that price point but so far RadioShack has the best deal at $149.99.