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Screen

The Max's screen measures 5.7 inches across the diagonal, but has only 720p HD resolution. That's about the same as the LG G Flex, and the Max has a similar Lo-Fi look to it. The 720p resolution is not the greatest option for a 5.7-inch display. It reduces the pixel density and leaves many elements looking fuzzy. Some icons and graphics almost appeared hazy to my eyes. It may not be as sharp as a 1080p screen, but I found it to be plenty bright. Viewing angles are quite good, and there's no color shift or dimming when the device is tilted side-to-side. The Max was easy to use outdoors as long as the screen is set at or near the maximum brightness setting.

Signal

Boost Mobile operates on Sprint's network, and the Max did well in connecting to and operating on Sprint's 3G/4G signal. Nearly all calls connected on the first dial, and I didn't drop or miss any calls while testing the Max. Data speeds were generally slow on Sprint's 3G network, but picked up significantly when the Max found Sprint's LTE 4G network. Data performance slowed down a little bit when under weak network conditions (whether 3G or 4G). In all, though, I don't really have any complaints.

Sound

Call quality was a bit below average to my ears. The earpiece produces plenty of volume, but there was an audible background hiss and scattered interference that made some calls difficult to understand. I sounded "good" to other callers, but "not great." I found the Max's earpiece to be sufficiently loud for use in all but the loudest environments. The speakerphone outperforms the earpiece in terms of quality and volume. Calls were just a bit clearer, and I could easily hold speakerphone conversations with the volume set at about 60%. Ringers and alert tones easily got my attention, and the vibrate alert was jarringly strong.

Battery

Big phones often have big batteries, and that's true of the ZTE Max. The 3,200mAh power supply is adequate to breath more than a full day's life into the Max. I had no trouble at all getting a day and a half from a single charge, despite heavy use. The Max should provide most owners with at least a day of productivity or fun.

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