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Best Computer Repair Shops in O'Fallon, IL (2026)

40 computer repair shops ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in O'Fallon: A+ Mobile - Cellular Sales & Phone Repair - A Plus Mobile, IFR Score 66/100; 5.0★ from 768 Google reviews; open Saturdays until 5 PM.

  2. 2

    Most-reviewed: CommDepot, 1,254 Google reviews at 4.8★, the most of 40 ranked; ranked #2.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

40 O'Fallon computer repair shops are ranked here by IFR Score, from nine published factors. 20 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.8★ across 40 rated IT firms.

Most of this list also appears on the Computer repair shops in Belleville ranking. See Computer repair shops in Belleville

Top 10 computer repair shops in O'Fallon at a glance

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Top 10 computer repair shops in O'Fallon at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1A+ Mobile - Cellular Sales & Phone Repair - A Plus Mobile665.0★ (768)Belleville, 7 mi awaySatOverall
2CommDepot654.8★ (1,254)St. Louis, 17 mi awaySat · Sun · EveningsMost reviews
3i Fix Gadget614.5★ (180)Belleville, 4 mi awaySat · Evenings—
4Phone Pandora/ Repair/ Cricket Wireless614.6★ (79)Belleville, 5 mi awaySat · Sun—
5Solve Your System, Inc.614.3★ (134)O'FallonSat—
6Repair-O-Tech595.0★ (127)Troy, 10 mi away——
7Datarecovery.com, Inc.584.9★ (141)Edwardsville, 14 mi away——
8MakeItWorkSTL575.0★ (14)Belleville, 3 mi awaySun · Evenings—
9Timeless Techs564.9★ (74)St. Louis, 17 mi awaySat—
10TechRescueStLouis.com564.7★ (95)St. Louis, 20 mi awaySat—

The 40 best computer repair shops in O'Fallon, ranked

Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

  1. Ranked #1 in O'Fallon

    #1 A+ Mobile - Cellular Sales & Phone Repair - A Plus Mobile

    Based in Belleville, 7 mi away

    66/100IFR Score

    Ranked #1 because of its Google rating and service focus: 5.0★ from 768 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 768 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat 11 AM–5 PM · Sun closed
    Address
    6009 W Main St, Belleville, IL 62223
    View profile for A+ Mobile - Cellular Sales & Phone Repair - A Plus Mobile(618) 671-6547

  2. #2 CommDepot

    Based in St. Louis, 17 mi away

    65/100IFR Score

    Ranked #2 because of its Google rating and review volume: 4.8★ from 1,254 Google reviews, the most in O'Fallon.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 1,254 Google reviews
    Hours
    Mon–Fri 10 AM–8 PM · Sat 10 AM–6 PM · Sun 11 AM–5 PM
    Address
    2629 Cherokee St, St. Louis, MO 63118
    View profile for CommDepot(314) 771-0000

  3. #3 i Fix Gadget

    Based in Belleville, 4 mi away

    61/100IFR Score

    Ranked #3 because of its Google rating and service focus: 4.5★ from 180 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.5★ from 180 Google reviews
    Hours
    Mon–Fri 10:30 AM–7 PM · Sat 11 AM–4 PM · Sun closed
    Address
    857 Seibert Rd, Scott AFB, IL 62225
    View profile for i Fix Gadget(618) 416-0023

  5. #5 Solve Your System, Inc.

    Based in O'Fallon

    61/100IFR Score

    Ranked #5 because of its Google rating and service focus: 4.3★ from 134 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.3★ from 134 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat 9 AM–4 PM · Sun closed
    Address
    519 W Hwy 50, O'Fallon, IL 62269
    View profile for Solve Your System, Inc.(618) 624-8484

  6. #6 Repair-O-Tech

    Based in Troy, 10 mi away

    59/100IFR Score

    Ranked #6 because of its Google rating and service focus: 5.0★ from 127 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 127 Google reviews
    Hours
    Mon–Wed 10 AM–5 PM · Thu closed · Fri 10 AM–5 PM · Sat–Sun closed
    Address
    535 Edwardsville Rd Ste 120, Troy, IL 62294
    View profile for Repair-O-Tech(618) 206-5051

  7. #7 Datarecovery.com, Inc.

    Based in Edwardsville, 14 mi away

    58/100IFR Score

    Ranked #7 because of its Google rating and service focus: 4.9★ from 141 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 141 Google reviews
    Hours
    Mon–Fri 9 AM–4 PM · Sat–Sun closed
    Address
    110 N Research Dr, Edwardsville, IL 62025
    View profile for Datarecovery.com, Inc.(800) 237-4200

  8. #8 MakeItWorkSTL

    Based in Belleville, 3 mi away

    57/100IFR Score

    Ranked #8 because of its Google rating and service focus: 5.0★ from 14 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 14 Google reviews
    Hours
    Mon–Fri 5 PM–9 PM · Sat closed · Sun 8 AM–8 PM
    View profile for MakeItWorkSTL(618) 608-0343

  9. #9 Timeless Techs

    Based in St. Louis, 17 mi away

    56/100IFR Score

    Ranked #9 because of its Google rating and service focus: 4.9★ from 74 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 74 Google reviews
    Hours
    Mon–Thu closed · Fri 10 AM–4 PM · Sat 10 AM–6 PM · Sun closed
    Address
    2035 Shenandoah Ave, St. Louis, MO 63104
    View profile for Timeless Techs(314) 449-1100

  10. #10 TechRescueStLouis.com

    Based in St. Louis, 20 mi away

    56/100IFR Score

    Ranked #10 because of its Google rating and service focus: 4.7★ from 95 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 95 Google reviews
    Hours
    Mon–Fri 9 AM–4 PM · Sat 9 AM–3 PM · Sun closed
    Address
    5236 Bancroft Ave, St. Louis, MO 63109
    View profile for TechRescueStLouis.com(314) 239-7616

  11. #11 1st Choice Lawn CARE

    Based in Collinsville, 9 mi away

    56/100IFR Score

    Ranked #11 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 7 Google reviews
    Hours
    Mon–Fri 7 AM–7 PM · Sat 7 AM–6 PM · Sun 9 AM–5 PM
    View profile for 1st Choice Lawn CARE(618) 825-1521

  12. #12 First Class Radio, Inc.

    Based in Granite City, 16 mi away

    56/100IFR Score

    Ranked #12 because of its Google rating and service focus: 4.3★ from 95 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.3★ from 95 Google reviews
    Hours
    Mon–Fri 10 AM–5 PM · Sat 10 AM–12 PM · Sun closed
    Address
    3126 W Chain of Rocks Rd, Granite City, IL 62040
    View profile for First Class Radio, Inc.(618) 797-3266

  13. #13 Mike's iPhone Repair

    Based in Collinsville, 16 mi away

    55/100IFR Score

    Ranked #13 because of its Google rating and service focus: 4.2★ from 33 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.2★ from 33 Google reviews
    Hours
    Mon 10 AM–7:30 PM · Tue–Thu 10 AM–8:30 PM · Fri 10 AM–3:30 PM · Sat 1 PM–6 PM · Sun 1 PM–4 PM
    View profile for Mike's iPhone Repair(618) 978-5418

  14. #14 St. Louis Tech Support

    Based in Affton, 18 mi away

    54/100IFR Score

    Ranked #14 because of its Google rating and service focus: 5.0★ from 48 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 48 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    View profile for St. Louis Tech Support(314) 583-0333

  16. #16 Tech SkillIT

    Based in Edwardsville, 16 mi away

    54/100IFR Score

    Ranked #16 because of its Google rating and service focus: 5.0★ from 30 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 30 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    View profile for Tech SkillIT(618) 307-4900

  19. #19 Golden Era Tech

    Based in Edwardsville, 15 mi away

    53/100IFR Score

    Ranked #19 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Sun 9 AM–7 PM
    View profile for Golden Era Tech(314) 669-1673

  20. #20 Ghost of Highland Geek

    Based in Collinsville, 16 mi away

    53/100IFR Score

    Ranked #20 because of its Google rating and service focus: 4.8★ from 26 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 26 Google reviews
    Hours
    Mon–Fri 12 PM–6 PM · Sat–Sun closed
    Address
    1025 Broadway, Highland, IL 62249
    View profile for Ghost of Highland Geek(618) 882-6373

  21. #21 Geeks On Site

    Based in Edwardsville, 15 mi away

    52/100IFR Score

    Ranked #21 because of its Google rating and service focus: 4.1★ from 9 Google reviews, listed on Google as “Computer repair service”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 4.1★ from 9 Google reviews
    Address
    Edwardsville, IL 62025
    View profile for Geeks On Site(618) 307-0278

  22. #22 Moore Computing, LLP

    Based in St. Louis, 16 mi away

    52/100IFR Score

    Ranked #22 because of its Google rating and service focus: 4.6★ from 18 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 18 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    317 N 11th St, St. Louis, MO 63101
    View profile for Moore Computing, LLP(314) 621-5585

  23. #23 Techmart & More LLC

    Based in St. Louis, 18 mi away

    52/100IFR Score

    Ranked #23 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Fri 8 AM–7 PM · Sat 10 AM–7 PM · Sun 12 PM–5 PM
    Address
    4346 Natural Bridge Ave, St. Louis, MO 63115
    View profile for Techmart & More LLC(314) 531-8877

  24. #24 Will's Copy Connection

    Based in St. Louis, 17 mi away

    51/100IFR Score

    Ranked #24 because of its Google rating and service focus: 3.4★ from 10 Google reviews, listed on Google as “Computer repair service”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 3.4★ from 10 Google reviews
    Address
    2634 1/2 Cherokee Street, 2634 Cherokee St, St. Louis, MO 63118
    View profile for Will's Copy Connection(314) 561-8083

  25. #25 ThinkIT Recycling

    Based in Granite City, 15 mi away

    51/100IFR Score

    Ranked #25 because of its Google rating and service focus: 4.2★ from 5 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.2★ from 5 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat 9 AM–2 PM · Sun closed
    Address
    1843 Madison Ave, Granite City, IL 62040
    View profile for ThinkIT Recycling(314) 514-5581

How we ranked O'Fallon computer repair shops

We scored 40 O'Fallon computer repair shops on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.

Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn O'Fallon data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose a computer repair shop

  1. Ask for a written estimate and approve any extra work before it is done.
  2. Ask whether they come on site and whether they work on business systems as well as home computers.
  3. Check the warranty on parts and labour.
  4. Ask for two or three references from clients of your size and industry, and call them.
  5. Get the scope, response times and price in writing before you sign, including how you leave and get your data back.

Questions to ask a computer repair shop

  • Is the diagnosis free, and how much is the estimate likely to change?
  • Do you back up our data before the repair?
  • Do you offer on-site visits for businesses?
  • What warranty do you give on parts and labour?
  • How long will the repair take?

Terms explained

MSP (managed service provider)
A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
Co-managed IT
An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
Break-fix
IT support paid per incident or per hour, with no monthly agreement.
SLA (service-level agreement)
The contract terms for response and resolution times, uptime and support hours.
Help desk
The support line staff call or email for IT problems.
RMM
Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
vCIO
A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
MSSP
A managed security service provider: a firm that monitors and manages security tools around the clock.
EDR / MDR
Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
MFA
Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
Penetration test
An authorised, simulated attack on your systems to find weaknesses before criminals do.
SOC 2
An independent auditor’s report (AICPA standard) on a service provider’s security controls.

Computer repair shops in O'Fallon: frequently asked questions

Who is the best computer repair shop in O'Fallon?

By IFR Score, the highest-ranked computer repair shop in O'Fallon, IL is A+ Mobile - Cellular Sales & Phone Repair - A Plus Mobile with an IFR Score of 66/100. It has 5.0★ from 768 Google reviews. It is open Saturdays until 5 PM. CommDepot (#2) and i Fix Gadget (#3) follow. We ranked 40 computer repair shops on nine factors, last updated November 9, 2026.

How many computer repair shops are there in O'Fallon?

ITFirmsRanked ranks 40 computer repair shops serving O'Fallon, IL. 2 of them are based in O'Fallon; the rest serve it from nearby towns. Counts are as of November 2026.

Which computer repair shops in O'Fallon work on weekends?

20 of 40 ranked computer repair shops post Saturday hours and 10 post Sunday hours. The highest-ranked open Saturdays are A+ Mobile - Cellular Sales & Phone Repair - A Plus Mobile (#1), CommDepot (#2) and i Fix Gadget (#3). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do O'Fallon computer repair shops have?

The median Google rating among 40 rated computer repair shops in O'Fallon is 4.8★, with a median of 16 reviews. CommDepot has the most, 1,254 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ITFirmsRanked rank computer repair shops?

Each computer repair shop gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.

Do computer repair shops outside O'Fallon count in this ranking?

Yes, if they are within 20 mi of the O'Fallon city center, our service radius for computer repair shops. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.

Can computer repair shops pay to rank higher on ITFirmsRanked?

No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.

What does a computer repair shop do?

Computer repair shops fix desktops, laptops and printers in store or on site: hardware repairs, upgrades, virus removal and setup. Many serve small offices as well as households.

How are computer repair shops in O'Fallon ranked?

By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does computer repair, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.

Should a business use a computer repair shop or an IT provider?

A repair shop suits one-off fixes on a few computers. Once you rely on shared files, email, backups and security across several staff, an IT provider with a support agreement usually works out better.

Should we back up before a repair?

Yes, if the computer still starts. Repairs can involve replacing drives or reinstalling the system. Ask the shop whether it backs up data first and what it charges.

Update log for O'Fallon

  1. November 2026: IFR Scores recalculated for 40 computer repair shops serving O'Fallon.

More computer repair shops and O'Fallon pages