[Question] Oukitel K4000 Pro Extremely Long Charge Time

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I still have warranty on the phone bought it from Amazon from a seller that's in my country so returning shouldn't be too much of an issue that board perhaps wouldn't fit as the k4000 USB is on the bottom and on this phone it is on the top of the phone.

Yea. If easy, return it then. ASAP.

I apologise I completely forgot to mention before this phone I had the normal k4000 which I returned due to battery percentage problems that phone charged at a similar rate to this.

Okay, well first have you tried a different house or building? I know doesn't make much sense, but just to eliminate all possible causes.

If still not charging normally, then regardless if it's a problem unit or not, it's still not charging as stated by Oukitel and that's a serious issue, waiting 10 hours for a phone to charge... not something minor. So get money back and get a different model is my advice.