I would like to add my experience with a motherboard replacement with Sprint. I bought a replacement SPH-L710 motherboard through iFixit.com's website. The motherboard was sealed in an electrostatic bag; however, upon opening the bag I noticed the SD card reader had signs of slight wear/scratches on the component. Other than that, product was fine. Replacement and install went off without a hitch. Booting up revealed a fully wiped, Knox enabled OS.
After calling Sprint to activate the phone, they informed me the IMEI/ESN number was not valid due to it being already activated through another carrier. They will flat out refuse to activate it. So, to sum up, be careful when replacing GS3 motherboards as the replacement may be on Sprint's internal blacklist even though sites like Swappa.com will tell you that the IMEI/ESN number is fine.
Media vez obtengan, podras ver un gráfico de la reputación que han obtenido con el tiempo.
Aquí está una vista previa de cómo lucirá el gráfico:
Aún no has no adquirido reputación.