My iPhone 7 Plus is very slow to charge
Hello,
My iPhone 7 Plus is very slow to charge Iam brought it on 2017 January Iam charge my iPhone when it battery is drain to 1% then Iam charge it to 100% but and it takes usually 4 hour. But now it takes 5 to 5.30 hours to charge from 1-100%.before one month this happens to me Iam brought one more original apple cable and I have the original cable that came with the Phone. Both of them are slow. Iam clean charging port also but same problem. I want to know what is the problem please reply me quickly