HOWEVER, when looking deeper into its specifications, this is where I noticed that the Runbo X5 has a Mediatek MT6577. When I looked up the compatible network types for the 6577 on Wikipedia, the specs chart said that this chipset not only supports plain old WCDMA 3G, but HSPA and HSPA+ as well!
So, shouldn't this mean that the Runbo X5 actually does support speeds beyond 384kbps through HSPA and HSPA+, or is there something the manufacturer does that somehow forces it to only support WCDMA?
Website listing the specifications
Wikipedia article on MediaTek. Just do a CTRL+F and type in 6577 to see what I was talking about.