when you think the latest from transsion 8s the best then you are.deluding yourself.

Camon 15 runs on MediaTek P35 and you are comparing to Xiaomi and oppo phones.

Don't waste your money on outdated hardware, you can check GsmArena for best phones 9r keep trying to defend a company that provides you with outdated hardware

do you know what a SnapDragon chipset is, or gorilla glass protection or faster charging, or AMOLED display unlike the LCD used on the camon 15

Your camon 15 can't run some games even though it has 6GB RAM?

why? poor chipset

You are using a chipset set which Xiaomi entry level phone (if you know what that means) won't even use to poor performance

don't argue with me, argue with Google and importantly GsmArena