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Real businesses.
Real results.

40+ verified reviews from businesses across Southern California. See what our clients say about working with SGI.

5.0
★★★★★
Overall rating
5 ★
38
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40+
Verified business reviews
100%
Would recommend SGI
<24h
Average response time
What Clients Say

Businesses trust SGI.

★★★★★

"SGI made our office internet upgrade completely painless. They handled AT&T, Spectrum, and our entire Wi-Fi install — all coordinated through one call. Best decision we made for our office this year."

Miguel R.
Operations Manager · Rancho Cucamonga, CA
★★★★★

"Outages used to knock out our phones every other week. SGI moved us to dedicated fiber with a wireless backup — zero nonsense, zero downtime from day one. Wish we'd called them years ago."

Vanessa G.
Office Administrator · Ontario, CA
★★★★★

"The fiber and VoIP conversion went smooth and on schedule. Communication throughout was excellent — they kept us updated at every step and followed through on every single promise they made."

Aaron T.
General Manager · Corona, CA
★★★★★

"We needed reliable connectivity across three locations. SGI built a solution that tied all of them together under one plan — easier and cheaper than going direct to any single carrier would have been."

Linda K.
Operations Director · San Bernardino, CA
★★★★★

"Saved us over $800/month by switching to a Spectrum/T-Mobile hybrid. SGI found the savings, handled the entire transition, and we never lost a single day of service. Absolutely recommend."

Carlos M.
Business Owner · Fontana, CA
★★★★★

"I was skeptical at first — sounded too good to be true. But they delivered. New fiber installed in a week, three times the speed, lower monthly cost. SGI is the real deal, period."

Sarah W.
Practice Manager · Riverside, CA
★★★★★

"Fast, professional, and honest. They compared five carriers for us, recommended the best option without any pressure, and got us installed with zero issues. The follow-up support has been equally great."

David H.
CEO · Logistics Firm · Chino, CA
★★★★★

"Our internet had been unreliable for two years. SGI diagnosed the issue, recommended a different carrier, and handled the entire switch. We've had zero outages in six months since. Incredible service."

Maria L.
Dental Practice Manager · Pomona, CA
★★★★★

"SGI handled our multi-site rollout across all four locations flawlessly. One point of contact, one invoice, everything managed. I can't imagine going back to dealing with carriers directly ever again."

James T.
Regional Manager · Retail Chain · Inland Empire

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