2011 was a great year for Android - Android 4.0 Ice Cream Sandwich was announced. The Galaxy Nexus was released. A whole truckload of Android tablets came out. The first 4G LTE smartphones appeared. But there were some significant speed bumps as well. Here are, in no particular order, the five things in the world of Android in the last year that really got our hopes up, but ended up being a little disappointing.

1. HTC ThunderBolt / All Early Verizon 4G LTE Phones

It's really hard to know where to start with the ThunderBolt. It wasn't actually a terrible phone in terms of usability or performance, but the delayed release, abysmal battery life, overheating, and seemingly endless wait for Android 2.3 drew more angst from owners than probably any other device we've ever seen.

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