Fast charging issues...

#Fast charging issues...
My mobile charging very very slowly.
It is taking more than 4 hours to full charge.
Please help
Tried Factory reset,
Software downgrade,
Tried different chargers and cables.. no issues with chargers.
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Comments
Try cleaning your port
Hi, we suggest you to please visit the nearest ASUS service center for better assistance. Locate here : https://www.asus.com/in/support/Service-Center/India
I'm in my native village (PIN CODE: 516390), Won't be able to travel to Bangalore for few more months.
Any solutions please?
I tried all options, nothing works..