Error 4013 in itunes is usually related to an IC2 issue, this can be many faults from CPU to Tristar to modem, most chips are underfilled except for a lot of the chips related to the MODEM. This includes the modem itself and the PMIC that supplies power to it.
4uF 20% Tolerance
4 Volts, X5R Class
Knock it off the board with the ferocity of a thousand old bony nuns
The underside of this black heat shielding is conductive, sometimes when re-installing the LCD, this foil can be pressed down onto the components underneath it and shorts them out.
This is ONLY for iPhone 8 PLUS
Power off the tablet (if in boot loop, hold power and volume down)
Hold power and volume up, a menu will appear
Scroll options using volume UP
select using volume DOWN
On dead android press POWER once
Scroll options using VOLUME DOWN
SELECT using VOLUME UP