iphone 6 plus ghost touching and unresponsive touch screen

Appleattalk wrote: "An independent repair shop with own brought battery"

Have the fake battery replaced with a genuine iPhone battery by a certified technician:

iPhone Battery & Power Repair

...Article found by searching Apple's Knowledge Base.

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Go to Settings > Accessibility > Touch, then tap Haptic Touch or 3D & Haptic Touch. Choose the touch duration—Fast or Slow. On an iPhone with 3D Touch, you can also choose the pressure needed—Light, Medium, or Firm. Test the new setting on the image at the bottom of the screen.

Adjust how iPhone responds to your touch - Apple Support (IN)

Appleattalk wrote: "i think its the battery's fault (...) i dropped it and splashed water on its back..."

Does your iPhone 6 Plus still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health

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Aplpleattalk ~ Was it replaced by a qualified technician using a genuine iPhone battery?...

About genuine iPhone batteries

Repair Provider Verification - Official Apple Support

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Appleattalk wrote: "...maybe its the display..."

Only if you had a fake display put in aswell as the fake battery.

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Appleattalk ~ I suggest you have the fake battery replaced properly as previously suggested and then, if you still have a problem, post back here.

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