Charging Problem with iPhone 7Plus

Hello,

My iPhone 7 plus got a weird problem on charging, The phone not charging by and USB cable or USB port except 1 usb cable "The original from its box" and the usb power jack is by "hoco" , Its 1A charger .. I was using "Anker 2.4A "and it's not working for me now! I try to use different cable in same port! It's not working! Same cable in different ports! It's not working too! , The phone charger very slowly and lost charging very fast ! Im not sure! It's the battery, a charging port! or the charging IC !

Any help please?