Computer Repair, Phone Repair & Managed IT Services — Rancho Cucamonga, CA
Supreme Tech is Rancho Cucamonga's locally owned technology services company, serving individuals and businesses throughout the Inland Empire since 2022. We provide expert computer repair, mobile phone repair, data recovery, managed IT services, cybersecurity, and cloud solutions from our shop at 11830 Sebastian Way Ste 103. Walk-ins are welcome Monday through Sunday, 10 AM to 7 PM — no appointment required for most services.
Our technicians evaluate and repair computers, laptops, MacBooks, phones, tablets, and game consoles. After diagnosis, we provide an estimate before proceeding. Turnaround depends on the device, parts availability, and repair complexity. Eligible repairs generally include a 90-day limited parts and labor warranty; coverage varies by repair.
Business clients rely on Supreme Tech for fully managed IT, 24/7 monitoring, cybersecurity compliance, cloud infrastructure, and on-site IT support across Rancho Cucamonga, Ontario, Fontana, Upland, and the greater Inland Empire. We serve businesses in healthcare, legal, professional services, manufacturing, education, and retail.
Repair Services
- Computer Repair — Desktop, laptop, and all-in-one repair, with diagnostic evaluation and an estimate before proceeding.
- Laptop Repair — Screen replacement, battery, SSD upgrade, keyboard, and charging port — Dell, HP, Lenovo, Asus, Acer, and more.
- MacBook Repair — Logic board, screen, battery, and liquid damage for all MacBook models including M1, M2, and M3.
- Phone Repair — Screen, battery, and other repairs for iPhone, Samsung Galaxy, Google Pixel, and Android devices. Timing depends on diagnosis and parts availability.
- Tablet Repair — iPad, Samsung Galaxy Tab, and Microsoft Surface screen, battery, and charging port repair.
- Game Console Repair — PlayStation, Xbox, Nintendo Switch — HDMI, Joy-Con drift, overheating, disc drive repair.
- Data Recovery — Recovery from hard drives, SSDs, RAID arrays, USB drives, and phones. No Data, No Fee applies to eligible services.
- Virus & Malware Removal — Malware assessment, removal, and security hardening. Recovery options depend on the infection and device condition.
Business IT Services
- Managed IT Services — 24/7 monitoring, help desk, patch management, and IT planning for a predictable monthly rate.
- Cybersecurity — Risk assessments, zero-trust architecture, endpoint protection, email security, and compliance support.
- Cloud Solutions — Azure, AWS, and Google Cloud migration, management, and cost optimization.
- Network Support — Business WiFi design, firewall management, VPN, and structured cabling for Rancho Cucamonga offices.
- Microsoft 365 — Tenant setup, email migration, Teams, SharePoint, OneDrive, and ongoing administration.
- IT Consulting — Technology roadmaps, vendor evaluation, IT budgeting, and strategic planning.
Why Rancho Cucamonga Chooses Supreme Tech
- Locally owned and operated — not a national franchise or call center
- 4.8 stars · 149+ verified Google and Yelp reviews from local customers
- Repair timing is estimated after diagnosis
- 90-day limited parts and labor warranty on eligible repairs
- Written repair estimates before work proceeds
- Computer, phone, and business IT support
- Walk-ins always welcome · Mon–Sun 10 AM–7 PM
Frequently Asked Questions
Where is Supreme Tech located? 11830 Sebastian Way Ste 103, Rancho Cucamonga, CA 91730. Open Monday through Sunday, 10 AM to 7 PM. Walk-ins welcome.
How long does repair take? Turnaround depends on diagnosis, parts availability, repair complexity, and device condition. We provide an estimated timeline after evaluation.
What is your warranty? Eligible repairs generally include a 90-day limited parts and labor warranty. Coverage varies; physical or liquid damage may affect or void coverage.
Do you work on Macs and iPhones? Yes. We service all Apple products: MacBook Pro, MacBook Air, iMac, Mac Mini, iPhone 8 through iPhone 15 Pro Max, and all iPad models.
Do you offer remote IT support? Yes. Remote tech support is available for home users and businesses throughout Southern California. Many issues are resolved without you needing to bring your device in.
Do you offer managed IT for small businesses? Yes. Managed IT plans can include monitoring, help desk, security, and cloud management. Scope and pricing are agreed before service begins.
Serving Rancho Cucamonga & the Inland Empire
Supreme Tech serves customers throughout the Inland Empire: Rancho Cucamonga, Ontario, Fontana, Upland, Claremont, Montclair, Chino, Chino Hills, Rialto, Colton, San Bernardino, Riverside, and beyond. Business clients receive on-site IT support throughout San Bernardino and Riverside counties.
Book a RepairBusiness IT SupportCall (840) 999-1034📍 11830 Sebastian Way Ste 103, Rancho Cucamonga, CA 91730 · 📞 (840) 999-1034 · Mon–Sun 10 AM–7 PM