I'm a trained computer technician and cellphone repair technician trying to sell the devices I have collected over the years in a professional manner, however, I am not a company and do not have large resources my devices are usually not brand new and I cannot give warranties longer than a week. All components have been tested and repaired or replaced if needed. Whenever possible I replace (or add for the first time [Nexus 4/5]) all thermal paste with Arctic MX-4 for better device longevity.