considering its a water resistant phone you're trying to fix yes id recommend the tutorial.

different models, different build and set up internally

the part you brought mustve had a faulty electromagnetic film behind the lcd causing the digitizer not to feel your finger tips. and only have it function when the pen is triggered since thats the main purpose of the electromagnet strip. I've peeled it before and placed it on othe lcds in the past. esp with note 2s

you need to replace both the charger port and the battery. seen it dozens of times