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 experienced technicians repair every major brand of computer, laptop, MacBook, iPhone, Android phone, tablet, and game console with prompt, case-dependent turnaround on most repairs. Every service includes a diagnostic evaluation, transparent estimate-based pricing, and a limited parts and labor warranty where applicable. Whether you need a cracked iPhone screen replaced in under an hour or a business network secured against ransomware, Supreme Tech delivers reliable service with no hidden fees.
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 for all brands. diagnostic evaluation, prompt, case-dependent service.
- 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 — iPhone, Samsung Galaxy, Google Pixel, and all Android devices. Most screens done in 30–90 minutes.
- 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 — No Data, No Fee where applicable to data-recovery service. Recovery from hard drives, SSDs, RAID arrays, USB drives, and phones.
- Virus & Malware Removal — Complete removal with security hardening. Ransomware, spyware, and adware eliminated prompt, case-dependent.
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
- prompt, case-dependent service on most computer and phone repairs
- limited parts and labor warranty where applicable on eligible repairs — if the problem returns, we fix it free
- Transparent estimate-based pricing — you see the estimate before we start
- experienced technicians: CompTIA A+, Network+, Security+, and Microsoft certified
- 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.
Do you offer prompt, case-dependent repair? Yes. Most repairs are completed the prompt, case-dependent. Phone screen replacements are done in 30–90 minutes. Computer repairs typically take a few hours. Call (840) 999-1034 to check availability.
What is your warranty? eligible repairs may include a limited parts and labor warranty where applicable. If the same issue returns within 90 days, we repair it at no charge — no questions asked.
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. We offer estimate-based managed IT plans covering monitoring, help desk, security, and cloud management for businesses in Rancho Cucamonga and the Inland Empire.
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