Detroit's Trusted Phone Repair
Expert diagnostics, screen replacements, and battery repairs — done right the first time. Walk in today and leave with a phone that feels brand new.
10+
Years of trusted repair experience in Detroit
What We Fix
Cracked or shattered display? We replace screens for all major brands with premium-quality parts and precise calibration.
Restore your phone's all-day battery life with genuine-grade cells installed quickly and tested for optimal performance.
Not sure what's wrong? Our thorough diagnostics pinpoint the issue so you get an honest assessment and fair repair plan.
Frozen screens, slow performance, or failed updates — we handle software troubleshooting, resets, and OS repairs.
iPad, Samsung Galaxy Tab, and more — we repair tablets with the same care and attention to detail as our phone service.
Dropped your phone in water? Bring it in immediately — our specialized cleaning and restoration can often save your device.
About Us
At SIGMA PHONE Repairs FLINT, we believe your phone is too essential to leave broken. Located on Grand River Avenue in the heart of Detroit, we've built our reputation on honest diagnostics, quality parts, and repairs that stand the test of time.
Whether it's a hairline crack on your screen or a battery that won't last past noon, we treat every device with the same precision and care — because your phone is your lifeline, and we take that seriously.
Walk-ins
No appointment needed
Same-day
Most repairs completed fast
All brands
Apple, Samsung, Google & more
Warranty
On every repair we perform
How It Works
Walk into our shop at 12086 Grand River Ave or give us a call. We accept walk-ins during business hours — no appointment required.
We inspect your device thoroughly, explain exactly what's wrong, and give you a clear repair plan with upfront pricing before any work begins.
Most repairs are completed the same day. We test everything before you leave, and you walk out with a phone that performs like new.
Customer Stories
"I thought my phone was done for after it went face-down in the parking lot. SIGMA had it looking and working like new the same day. Incredible service."
— Verified Customer
"Honest, fast, and fairly priced. They diagnosed my issue in minutes and explained everything clearly. No upselling, no games — just good work."
— Verified Customer
"My battery was dying by lunchtime every day. After the replacement at SIGMA, it's been weeks and my phone lasts all day again. Highly recommend."
— Verified Customer
Walk in today or give us a call — we'll have you back up and running fast.
Get In Touch
Address
12086 Grand River Ave
Detroit, MI 48204-1848
Phone
(313) 467-1611Have a question about your device? Drop us a line and we'll get back to you.
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