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Best Business Phone System Providers in Rialto, CA (2026)

263 business phone system providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Rialto: Call Tools, IFR Score 66/100; 5.0★ from 1,134 Google reviews; open 7 days a week.

  2. 26

    Most-reviewed: XYZies, 176 Google reviews at 4.8★, the most of 263 ranked after Call Tools; ranked #26.

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

263 Rialto business phone system providers are ranked here by IFR Score, from nine published factors. 129 open Saturdays and 106 open Sundays, based on posted hours. The median Google rating is 4.9★ across 263 rated IT firms.

Top 10 business phone system providers in Rialto at a glance

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

Top 10 business phone system providers in Rialto at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1Call Tools665.0★ (1,134)Irvine, 39 mi awaySat · SunOverall
2Total Wireless644.9★ (99)Fontana, 5 mi awaySat · Sun · Evenings—
3LAN WAN Enterprise - IT Services In Orange County & Irvine635.0★ (174)Irvine, 40 mi awaySat · Sun · Evenings—
4One Internet America Business Internet and Telephone604.5★ (25)Ontario, 12 mi awaySat · Sun · Evenings—
5Los Amaya603.9★ (87)Colton, 4 mi awaySat · Sun · Evenings—
6ALFA Business, Inc.604.9★ (120)Riverside, 16 mi away——
7Total Wireless605.0★ (93)Westminster, 42 mi awaySat · Sun · Evenings—
8Total Wireless595.0★ (21)San Bernardino, 8 mi awaySat · Sun · Evenings—
9Biztek Solutions, Inc594.9★ (75)Riverside, 8 mi away——
10One Stop Telecom | Business Phone. Business Internet. Easy.595.0★ (75)Upland, 16 mi away——

The 263 best business phone system providers in Rialto, 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.

Scores below: based on 8 of 9 factors; recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in Rialto

    Based in Irvine, 39 mi away

    66/100IFR Score

    Ranked #1 because of its Google rating and review volume: 5.0★ from 1,134 Google reviews, the most in Rialto.

    • 5.0★ from 1,134 Google reviews
    Hours
    Mon–Fri 5 AM–5 PM · Sat–Sun 7 AM–4 PM
    Address
    16842 Von Karman Ave Ste 475, Irvine, CA 92606
  2. Based in Fontana, 5 mi away

    64/100IFR Score

    Ranked #2 because of its Google rating and service focus: 4.9★ from 99 Google reviews, listed on Google as “Telecommunications service provider”.

    • 4.9★ from 99 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 10 AM–5 PM
    Address
    10012 Sierra Ave, Fontana, CA 92335
  3. Based in Colton, 4 mi away

    60/100IFR Score

    Ranked #5 because of its Google rating and service focus: 3.9★ from 87 Google reviews, listed on Google as “Telecommunications service provider”.

    • 3.9★ from 87 Google reviews
    Hours
    Mon–Sat 9:30 AM–9 PM · Sun 9:30 AM–8 PM
    Address
    1257 N Mt Vernon Ave, Colton, CA 92324
  4. Based in Riverside, 16 mi away

    60/100IFR Score

    Ranked #6 because of its Google rating and service focus: 4.9★ from 120 Google reviews, listed on Google as “Telecommunications service provider”.

    • 4.9★ from 120 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    21770 Van Buren Boulevard #102, Riverside, CA 92518
  5. Based in Westminster, 42 mi away

    60/100IFR Score

    Ranked #7 because of its Google rating and service focus: 5.0★ from 93 Google reviews, listed on Google as “Telecommunications service provider”.

    • 5.0★ from 93 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 10 AM–5 PM
    Address
    9928 Bolsa Ave, Westminster, CA 92683
  6. Based in San Bernardino, 8 mi away

    59/100IFR Score

    Ranked #8 because of its Google rating and service focus: 5.0★ from 21 Google reviews, listed on Google as “Telecommunications service provider”.

    • 5.0★ from 21 Google reviews
    Hours
    Mon–Sat 9 AM–7:30 PM · Sun 10 AM–5 PM
    Address
    2075 E Highland Ave # Q, San Bernardino, CA 92404
  7. Based in Riverside, 8 mi away

    59/100IFR Score

    Ranked #9 because of its Google rating and service focus: 4.9★ from 75 Google reviews, listed on Google as “Telecommunications service provider”.

    • 4.9★ from 75 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1650 Spruce St Ste 310, Riverside, CA 92507
  8. Based in Hacienda Heights, 33 mi away

    58/100IFR Score

    Ranked #13 because of its Google rating and service focus: 4.7★ from 56 Google reviews, listed on Google as “Telecommunications service provider”.

    • 4.7★ from 56 Google reviews
    Hours
    Mon–Sun 10 AM–7 PM
    Address
    17120 Colima Rd Ste 104, Hacienda Heights, CA 91745
  9. Based in San Bernardino, 3 mi away

    58/100IFR Score

    Ranked #14 because of its Google rating and service focus: 3.8★ from 25 Google reviews, listed on Google as “Telecommunications service provider”.

    • 3.8★ from 25 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 10 AM–6 PM
    Address
    576 S Mt Vernon Ave, San Bernardino, CA 92410
  10. Based in San Bernardino, 3 mi away

    58/100IFR Score

    Ranked #15 because of its Google rating and service focus: 5.0★ from 10 Google reviews, listed on Google as “Telecommunications service provider”.

    • 5.0★ from 10 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 12 PM–5 PM
    Address
    1588 W Base Line St Ste 103, San Bernardino, CA 92411
  11. Based in Ontario, 16 mi away

    58/100IFR Score

    Ranked #16 because of its Google rating and service focus: 4.7★ from 11 Google reviews, listed on Google as “Telecommunications service provider”.

    • 4.7★ from 11 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    1435 S Cucamonga Ave, Ontario, CA 91761
  12. Based in San Bernardino, 6 mi away

    58/100IFR Score

    Ranked #18 because of its Google rating and service focus: 4.6★ from 13 Google reviews, listed on Google as “Telecommunications service provider”.

    • 4.6★ from 13 Google reviews
    Hours
    Mon–Sat 9 AM–8:30 PM · Sun 10 AM–7 PM
    Address
    134 W 40th St, San Bernardino, CA 92407
  13. Based in Pomona, 20 mi away

    58/100IFR Score

    Ranked #20 because of its Google rating and service focus: 5.0★ from 18 Google reviews, listed on Google as “Telecommunications service provider”.

    • 5.0★ from 18 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 11 AM–5 PM
    Address
    606 Indian Hill Blvd 1st Floor, Pomona, CA 91767
  14. Based in Rowland Heights, 31 mi away

    57/100IFR Score

    Ranked #21 because of its Google rating and service focus: 4.5★ from 44 Google reviews, listed on Google as “Telecommunications service provider”.

    • 4.5★ from 44 Google reviews
    Hours
    Mon–Sun 10 AM–7 PM
    Address
    1015 Nogales St #113b, Rowland Heights, CA 91748
  15. Based in La Puente, 34 mi away

    57/100IFR Score

    Ranked #22 because of its Google rating and service focus: 4.4★ from 58 Google reviews, listed on Google as “Telecommunications service provider”.

    • 4.4★ from 58 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 12 PM–5 PM
    Address
    810 N Hacienda Blvd, La Puente, CA 91744
  16. Based in Rialto

    57/100IFR Score

    Ranked #23 because of its Google rating and service focus: 3.5★ from 15 Google reviews, listed on Google as “Telecommunications service provider”.

    • 3.5★ from 15 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 10 AM–6 PM
    Address
    1274 N Riverside Ave, Rialto, CA 92376
  17. Based in Santa Ana, 39 mi away

    57/100IFR Score

    Ranked #25 because of its Google rating and service focus: 5.0★ from 36 Google reviews, listed on Google as “Telecommunications service provider”.

    • 5.0★ from 36 Google reviews
    Hours
    Mon–Sat 10 AM–7 PM · Sun 12 PM–5 PM
    Address
    2525 Westminster Ave F, Santa Ana, CA 92706

Business phone system providers ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in IFR Score order; each links to its profile. We publish the top 50 of 263 ranked business phone system providers here; the rest are on their profiles.

business phone system providers in Rialto, ranks 26 to 50
RankBusinessIFR ScoreGoogle ratingDistance
26XYZies574.8★ (176)43 mi
27Boost Mobile574.5★ (36)30 mi
28LYKOS Capital575.0★ (106)40 mi
29VOaaS575.0★ (68)45 mi
30Total Wireless575.0★ (34)40 mi
31Advanced Technical Services575.0★ (22)31 mi
32Boost Mobile574.1★ (63)31 mi
33Twintel574.9★ (111)43 mi
34Waveform574.8★ (131)42 mi
35TexStar Networks575.0★ (16)12 mi
36Total Wireless564.5★ (17)22 mi
37Total Wireless564.4★ (17)21 mi
38Total Wireless564.1★ (11)10 mi
39SmarterHome.ai - Compare Local Internet Deals565.0★ (13)7 mi
40Boost Mobile Store564.6★ (32)38 mi
41Total Wireless564.8★ (31)41 mi
42Nevtis Communications565.0★ (36)20 mi
43Safe Haven Solutions565.0★ (12)36 mi
44iTalkBB San Gabriel Store564.3★ (54)42 mi
45Triton Communication, Inc.564.9★ (55)32 mi
46SoundCurve - Business Phone Systems564.8★ (25)29 mi
47Innova Global Technology Inc.564.8★ (37)38 mi
48Total Wireless565.0★ (22)41 mi
49Smartology564.9★ (43)41 mi
50Metro RF Services, Inc.554.3★ (13)14 mi

Also serving Rialto

20 more business phone system providers within 50 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.

Unranked business phone system providers serving Rialto
BusinessGoogle ratingDistance
Agility Integration Corporation4.5★ (2)15 mi
ALine Telephone4.5★ (2)11 mi
Alquest Technologies, Inc.5.0★ (2)24 mi
American Tower Corporation4.0★ (2)11 mi
Computel4.6★ (55)In Rialto
Connections 875.0★ (2)24 mi
IntelesysOne5.0★ (2)12 mi
J D Telcom5.0★ (2)27 mi
LapTown CA5.0★ (6)In Rialto
MC Electric dba MC Contracting5.0★ (2)19 mi
PhonePlatform.com5.0★ (2)24 mi
Quick-Tel Communications5.0★ (2)28 mi
Rolcom Inc5.0★ (2)20 mi
SmarterHome.ai - Compare Local Internet Deals5.0★ (2)4 mi
SmarterHome.ai - Compare Local Internet Deals5.0★ (2)5 mi
SmarterHome.ai - Compare Local Internet Deals5.0★ (2)9 mi
SmarterHome.ai - Compare Local Internet Deals5.0★ (2)13 mi
Solo Telecom Inc5.0★ (2)7 mi
TechPro Services US5.0★ (2)26 mi
Total Wireless5.0★ (1)In Rialto

How we ranked Rialto business phone system providers

We scored 263 Rialto business phone system providers 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 Rialto 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 business phone system provider

  1. Ask whether the system is cloud-hosted or installed on site, and who maintains it.
  2. Check internet capacity and backup: a cloud phone system stops when your connection does.
  3. Ask how 911 locations are registered for each phone and for remote staff.
  4. Compare per-user prices on the same features (call recording, queues, integrations).
  5. Ask for two or three references from clients of your size and industry, and call them.
  6. 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 business phone system provider

  • Is the price per user, and which features are extra?
  • Will you port our existing numbers, and how long does it take?
  • What happens to calls if our internet connection goes down?
  • How are 911 locations set up for office and remote staff?
  • Who do we call for support, and during which hours?
  • What is the contract length, and are phones bought or leased?

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.

Business phone system providers in Rialto: frequently asked questions

Who is the best business phone system provider in Rialto?

By IFR Score, the highest-ranked business phone system provider in Rialto, CA is Call Tools with an IFR Score of 66/100. It has 5.0★ from 1,134 Google reviews. It is open 7 days a week. Total Wireless (#2) and LAN WAN Enterprise - IT Services In Orange County & Irvine (#3) follow. We ranked 263 business phone system providers on nine factors, last updated November 9, 2026.

How many business phone system providers are there in Rialto?

ITFirmsRanked ranks 263 business phone system providers serving Rialto, CA. 1 of them is based in Rialto; the rest serve it from nearby towns. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.

Which business phone system providers in Rialto work on weekends?

129 of 263 ranked business phone system providers post Saturday hours and 106 post Sunday hours. The highest-ranked open Saturdays are Call Tools (#1), Total Wireless (#2) and LAN WAN Enterprise - IT Services In Orange County & Irvine (#3). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do Rialto business phone system providers have?

The median Google rating among 263 rated business phone system providers in Rialto is 4.9★, with a median of 13 reviews. Call Tools has the most, 1,134 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ITFirmsRanked rank business phone system providers?

Each business phone system provider 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 business phone system providers outside Rialto count in this ranking?

Yes, if they are within 50 mi of the Rialto city center, our service radius for business phone system providers. 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 business phone system providers 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 business phone system provider do?

Business phone system providers set up and support office phone systems, mostly cloud VoIP today: numbers, desk phones, call routing, voicemail and contact-centre features.

How are business phone system providers in Rialto ranked?

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

Can we keep our phone numbers if we switch providers?

In most cases yes: numbers can be ported to a new provider in the US and Canada. Keep your current service active until the port is complete, and ask the new provider to manage the port request.

What about 911 calls on a VoIP system?

Each phone needs a registered location so 911 calls go to the right place. In the US, multi-line systems must support direct 911 dialling and send dispatchable location information under federal rules (Kari’s Law and RAY BAUM’S Act). Ask the provider how they set this up.

Update log for Rialto

  1. November 2026: IFR Scores recalculated for 263 business phone system providers serving Rialto.
  2. November 2026: 1 duplicate listing merged.