I have purchased this phone year ago. It have a great camera quality as it packed with sony/Samsung camera. It captures great pictures with details as I can say it is best for mobile photography. I have uploaded some picture captured by it. A lot of manual control is provided for real-time editing. A better sharp display produces colorful images and video. It have good color contrast. It is offered with octacore processors with 2 GB RAM but you’ll will get 1.1 GB free after Miui 8 update. Its build quality is not premium but it is handy & comfortable. Sound is crystal clear but little noisy. It is packed with 3120 mAh Battery which gives approx full day back up even you can customize some settings to increase backup. Overall It looks great with many features provided by Xiaomi as it has been loaded heavy skinned android os lollipop 5.0.1.
But I always miss VOLTE in it and last but not least expandable memory as it has 16 GB(10 GB user avalable) internal memory only. After installing a bunch of application I get very less space of storage as I never keep photo and videos.
Here are some pictures captured by mi4i given down below.