The liquid damage indicators are both white... when I compared the ports on my phone and my friends phone there are no differences that I can see... And I've cross tested every cable and charger with another phone and they are all good.
You need to replace the battery. Apple won't tell you that, but they will give you a refurbished phone if your still under waranty. If not, you get an opportunity to pony up $199 for a refurbished phone.
Anyone else but me tired of the same "do a hard reset" answer to every question asked?