37 Providing technical support, namely, technical advice concerning the use, repairs, upgrades and maintenance of mobile devices, portable wireless apparatuses, laptops, computers, solid state drives, VDI endpoints, commercial displays and TVs, printers, copiers, networking and voice systems, medical devices, LED lighting, and other electronic components; maintenance and repair of mobile devices, portable wireless apparatuses, laptops, computers, solid state drives, VDI endpoints, commercial displays and TVs, printers, copiers, networking and voice systems, medical devices, LED lighting, and other electronic components; providing a replacement program for used mobile phones, mobile devices, portable wireless apparatuses, laptops, computers, solid state drives, VDI endpoints, commercial displays and TVs, printers, copiers, networking and voice systems, medical devices, LED lighting, and other electronic components; vendor-on-premise services, namely, offering support services related to the use of mobile devices and application software for mobile devices, namely, technical advice concerning the use, repairs, upgrades and maintenance of mobile devices; technical support services pertaining to troubleshooting in the nature of repair of portable wireless apparatus, namely, smart phones and tablet PC; vendor-on-premise services, namely, offering support services related to the use of equipment, namely, technical advice concerning the use, repairs, upgrades and maintenance of portable wireless apparatuses, laptops, computers, solid state drives, VDI endpoints, commercial displays and TVs, printers, copiers, networking and voice systems, medical devices, LED lighting, and other electronic components; technical support services pertaining to troubleshooting in the nature of repair of portable wireless apparatuses, laptops, computers, solid state drives, VDI endpoints, commercial displays and TVs, printers, copiers, networking and voice systems, medical devices, LED lighting, and other electronic components