Chosen Solution

Hello everybody. I have a iPhone and the other day my lcd broke. I got an brand new LCD that I replaced myself and because the health of the battery was poor I changed the battery too. 3 weeks (more or less) have passed and one day i let the charge of the battery reach 0% and the iphone shuted down as expected. When I had the oportunity to plug the phone to the wall nothing happened. I let the phone sit for about 2 hours and nothing happened again. I tried to change the old LCD, because I thought the new LCD was damaged somehow and nothing happened again. I changed the battery to the old one (original) and nothing changed again. What could possible be the cause? Facts:

  • When i plug the iphone to de laptop, the iTunes recognizes the phone but the serial number appears to be unknown: “Serial number: n/d”;
  • I have tried the power button + home button thing and nothing happens. Can somebody help me? Is the motherboard fried somehow? If i charge the battery with a external charger is it possible to work? Thank you all. (Sorry for my bad English).

Sometimes when the health of the battery is poor u also have a problem with the charging circuit of the phone which leads to ur battery health being poor, so 3 possible things the battery has been allowed to deplete to such a level that it no longer has enough juice to start charging, u can buy chargers that the battery plugs into and allow it to charge independently some people just give it a bust with a dc power supply, only for a few seconds and then put it back in the phone and it charges again. 2nd thing it could be a bad battery that goes below its tolerance and wont charge again. 3rd thing u have a faulty charging circuit and the phone never charges properly… tristar ic etc… P.s 4th and 5th lol u could have broken the screen ie damaged the flexes taking it apart again, u could have caused long screw damage etc. Damaged charging flex. My steps on this would be to boost the battery for a second then plug it back into the phone and test its charging correctly using a USB ampmeter