1. Its CPU, quite frankly, sucks. It is very laggy compared to the Nexus 1 (or iPhone 4). It is like, really bad. Embaressingly bad. I need my phone for business reasons and this one just doesn't cut it.
2. Its battery life is horrid. If the battery could be re-charged fast enough, that'd be one thing but it sucks batteries like noone's business. Even after I try to barely use 4G, keep it dim, only Sync GMail and keep GPS off.