wratterus:
The Mi A2 looks pretty nice. 5.8" rather than 5.5", 19:9 aspect ratio. They also have a 6GB/128GB version with a Snapdragon 660 and a slightly larger screen, but a smaller battery.
The 3GB version of the A2 has the same processor as the old one, but 2280x1080 res, face unlock, 4000mAh battery, 2x SIM + SD card slot. Honestly I think you'd be hard pressed to do better for under $500, and one of those is well under $350.
I can't find if it does band 28 anywhere though, if it did that would really be the icing on the cake.
Would need to expand the memory - 32Mb doesn't store a lot of media. Looks like you can add a memory card?