Xiaomi launched the Mi 4i smartphone last month for Rs. 12,999. We already reviewed the smartphone, here we have the battery test results of the smartphone The Xiaomi Mi 4i packs a 3120mAh built-in battery, slightly larger than the 3080mAh battery on the Mi 4. It has a 5-inch 1080p screen and is powered by an Octa-Core Qualcomm Snapdragon 615 SoC. Here are the test results.