iPhone 8+ battery won't hold charge!
I'm so frustrated. I bought an iPhone 8 plus second hand. The seller informed me it doesnt stay charged. I bought it, then check it out. It only turns on when plugged in, and even then it will turn off after about 1 minute. If taken out of the charger, it immediately turns off. I ordered a brand new charge port, I replaced it. It STILL doesnt work! I'm so frustrated right now. I've invested so much time and money into this.
Could it be the battery? What should my next step be? Someone please help.
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