Chosen Solution
hi, i have bought a second hand iphone 6, that was show apple logo then shuts down, and iphone never turns on with charger connected (only when connected to charger and also press the power button) it also never shows red battery symbol. i have replaced charge port and battery now its completely dead never respond to power button or charger
Has this phone ever worked since you bought it ? It sounds like a battery issue to me although it could be an issue with the charge circuit on the logic board. You would have to try and install a known-good (or high quality) replacement battery to be certain. Follow this guide.
