I love this smartphone era we're going through. Two years ago, something like Lenovo's new P1 or P1m would have cost a fortune, but now these devices are launching in the low to midrange, with prices that could awe and tempt the best of us. As David said a few days ago, the cheap smartphone is rising and that benefits us all.

So what's so special about these Lenovo devices? Mostly, their battery size. The larger P1 (5.5" Full HD IPS display) has a 5,000 mAh battery, good for about 45 hours of 4G talk time. The smaller P1m (5" 720p IPS display) gets a 4,000 mAh battery, which should last for 16 hours of 4G talk time.

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