The Xiaomi Mi Max 3 has a giant screen and a battery to match
https://www.theverge.com/circuitbreaker/2018/7/19/17589614/xiaomi-mi-max-3-announced-price-specs-release-date
Xiaomi has announced the Mi Max 3, the latest and biggest yet in its line of colossal phones. This time around the screen is 6.9 inches, and Xiaomi is using an 18:9 screen for the first time in the series. Top and bottom bezels are present, though pretty thin in relation to the vast expanse of the screen. The resolution is 1080p, so you’ll probably be able to make out pixels, but that’s not likely to be a huge concern for users that want something like this as a primary video device.
Powering all this is a 5,500mAh battery, which Xiaomi has managed to cram into a 7mm-thick chassis. The company says it can be charged to 71 percent in one hour. Other specs include a 12-megapixel plus 5-megapixel dual-camera system, a Snapdragon 636 processor, up to 6GB of RAM and 128GB of storage, and an 8-megapixel selfie camera.