Our test unit's software was pretty stable so we didn't face any noticeable glitches or bugs during our usage. The operating system works smoothly and so does multitasking. On any given day, you'll likely have about 800MB of free RAM available, which is a decent amount. We found the earpiece volume a bit lower than what we'd have liked, but clarity was good. The size of the phone does make it difficult to hold when on long calls. The Snapdragon 650 SoC offers plenty of grunt for most apps and games. As an indication of gaming performance, we got a healthy 32fps in GFXbench and 18, 044 points in 3DMark Ice Storm Unlimited.
