67/100IFR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 1,134 Google reviews, the most in Fontana.
Best Business Phone System Providers in Fontana, CA (2026)
300 business phone system providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Fontana: Call Tools, IFR Score 67/100; 5.0★ from 1,134 Google reviews; open 7 days a week.
- 23
Most-reviewed: XYZies, 176 Google reviews at 4.8★, the most of 300 ranked after Call Tools; ranked #23.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
300 Fontana business phone system providers are ranked here by IFR Score, from nine published factors. 150 open Saturdays and 123 open Sundays, based on posted hours. The median Google rating is 4.9★ across 300 rated IT firms.
Top 10 business phone system providers in Fontana at a glance
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
| Rank | Business | IFR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Call Tools | 67 | 5.0★ (1,134) | Irvine, 36 mi away | Sat · Sun | Overall |
| 2 | Total Wireless | 64 | 4.9★ (99) | Fontana | Sat · Sun · Evenings | — |
| 3 | LAN WAN Enterprise - IT Services In Orange County & Irvine | 63 | 5.0★ (174) | Irvine, 37 mi away | Sat · Sun · Evenings | — |
| 4 | One Internet America Business Internet and Telephone | 60 | 4.5★ (25) | Ontario, 8 mi away | Sat · Sun · Evenings | — |
| 5 | Total Wireless | 60 | 5.0★ (93) | Westminster, 38 mi away | Sat · Sun · Evenings | — |
| 6 | ALFA Business, Inc. | 60 | 4.9★ (120) | Riverside, 17 mi away | — | — |
| 7 | Los Amaya | 59 | 3.9★ (87) | Colton, 7 mi away | Sat · Sun · Evenings | — |
| 8 | Biztek Solutions, Inc | 59 | 4.9★ (75) | Riverside, 9 mi away | — | — |
| 9 | One Stop Telecom | Business Phone. Business Internet. Easy. | 59 | 5.0★ (75) | Upland, 12 mi away | — | — |
| 10 | CoreSite Los Angeles Data Center (LA2) | 59 | 4.5★ (111) | Los Angeles, 46 mi away | Sat · Sun · Evenings | — |
The 300 best business phone system providers in Fontana, 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.
Based in Fontana
64/100IFR ScoreRanked #2 because of its Google rating and service focus: 4.9★ from 99 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Irvine, 37 mi away
63/100IFR ScoreRanked #3 because of its Google rating and service focus: 5.0★ from 174 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Ontario, 8 mi away
60/100IFR ScoreRanked #4 because of its Google rating and service focus: 4.5★ from 25 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Westminster, 38 mi away
60/100IFR ScoreRanked #5 because of its Google rating and service focus: 5.0★ from 93 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Riverside, 17 mi away
60/100IFR ScoreRanked #6 because of its Google rating and service focus: 4.9★ from 120 Google reviews, listed on Google as “Telecommunications service provider”.
#7 Los Amaya
Based in Colton, 7 mi away
59/100IFR ScoreRanked #7 because of its Google rating and service focus: 3.9★ from 87 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Riverside, 9 mi away
59/100IFR ScoreRanked #8 because of its Google rating and service focus: 4.9★ from 75 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Upland, 12 mi away
59/100IFR ScoreRanked #9 because of its Google rating and service focus: 5.0★ from 75 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Los Angeles, 46 mi away
59/100IFR ScoreRanked #10 because of its Google rating and service focus: 4.5★ from 111 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Los Angeles, 47 mi away
59/100IFR ScoreRanked #11 because of its Google rating and service focus: 4.9★ from 66 Google reviews, listed on Google as “Telecommunications service provider”.
#12 Total Wireless
Based in San Bernardino, 12 mi away
59/100IFR ScoreRanked #12 because of its Google rating and service focus: 5.0★ from 21 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Corona, 17 mi away
59/100IFR ScoreRanked #13 because of its Google rating and service focus: 4.8★ from 16 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Hacienda Heights, 30 mi away
59/100IFR ScoreRanked #14 because of its Google rating and service focus: 4.7★ from 56 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Ontario, 12 mi away
58/100IFR ScoreRanked #15 because of its Google rating and service focus: 4.7★ from 11 Google reviews, listed on Google as “Telecommunications service provider”.
#16 Total Wireless
Based in Pomona, 16 mi away
58/100IFR ScoreRanked #16 because of its Google rating and service focus: 5.0★ from 18 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Laguna Woods, 38 mi away
58/100IFR ScoreRanked #17 because of its Google rating and service focus: 5.0★ from 68 Google reviews, listed on Google as “Telecommunications service provider”.
Based in Rowland Heights, 27 mi away
58/100IFR ScoreRanked #18 because of its Google rating and service focus: 4.5★ from 44 Google reviews, listed on Google as “Telecommunications service provider”.
#19 Boost Mobile
Based in La Puente, 30 mi away
58/100IFR ScoreRanked #19 because of its Google rating and service focus: 4.4★ from 58 Google reviews, listed on Google as “Telecommunications service provider”.
#20 Total Wireless
Based in Los Angeles, 48 mi away
58/100IFR ScoreRanked #20 because of its Google rating and service focus: 5.0★ from 60 Google reviews, listed on Google as “Telecommunications service provider”.
#21 Total Wireless
Based in San Bernardino, 7 mi away
58/100IFR ScoreRanked #21 because of its Google rating and service focus: 3.8★ from 25 Google reviews, listed on Google as “Telecommunications service provider”.
#22 Total Wireless
Based in Santa Ana, 35 mi away
58/100IFR ScoreRanked #22 because of its Google rating and service focus: 5.0★ from 36 Google reviews, listed on Google as “Telecommunications service provider”.
#23 XYZies
Based in Newport Beach, 39 mi away
58/100IFR ScoreRanked #23 because of its Google rating and service focus: 4.8★ from 176 Google reviews, listed on Google as “Telecommunications service provider”.
#24 LYKOS Capital
Based in El Monte, 36 mi away
58/100IFR ScoreRanked #24 because of its Google rating and service focus: 5.0★ from 106 Google reviews, listed on Google as “Telecommunications service provider”.
#25 VOaaS
Based in Pasadena, 41 mi away
57/100IFR ScoreRanked #25 because of its Google rating and service focus: 5.0★ from 68 Google reviews, listed on Google as “Telecommunications service provider”.
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 300 ranked business phone system providers here; the rest are on their profiles.
| Rank | Business | IFR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | SmarterHome.ai - Compare Local Internet Deals | 57 | 5.0★ (13) | 13 mi |
| 27 | Total Wireless | 57 | 5.0★ (10) | 7 mi |
| 28 | Total Wireless | 57 | 4.6★ (13) | 10 mi |
| 29 | Total Wireless | 57 | 5.0★ (34) | 36 mi |
| 30 | Twintel | 57 | 4.9★ (111) | 39 mi |
| 31 | Waveform | 57 | 4.8★ (131) | 39 mi |
| 32 | TexStar Networks | 57 | 5.0★ (16) | 8 mi |
| 33 | Boost Mobile | 57 | 4.1★ (63) | 31 mi |
| 34 | SmarterHome.ai - Compare Local Internet Deals | 57 | 5.0★ (11) | 15 mi |
| 35 | Advanced Technical Services | 57 | 5.0★ (22) | 31 mi |
| 36 | Total Wireless | 57 | 3.5★ (15) | 4 mi |
| 37 | Total Wireless | 57 | 4.4★ (17) | 17 mi |
| 38 | Boost Mobile | 57 | 4.5★ (36) | 33 mi |
| 39 | Boost Mobile Store | 57 | 4.6★ (32) | 35 mi |
| 40 | Total Wireless | 57 | 4.1★ (11) | 8 mi |
| 41 | Total Wireless | 57 | 4.8★ (31) | 37 mi |
| 42 | iTalkBB San Gabriel Store | 57 | 4.3★ (54) | 38 mi |
| 43 | Total Wireless | 57 | 4.6★ (63) | 49 mi |
| 44 | Safe Haven Solutions | 56 | 5.0★ (12) | 33 mi |
| 45 | Nevtis Communications | 56 | 5.0★ (36) | 18 mi |
| 46 | Total Wireless | 56 | 4.5★ (17) | 24 mi |
| 47 | Triton Communication, Inc. | 56 | 4.9★ (55) | 28 mi |
| 48 | Total Wireless | 56 | 5.0★ (22) | 38 mi |
| 49 | SoundCurve - Business Phone Systems | 56 | 4.8★ (25) | 25 mi |
| 50 | SmarterHome.ai - Compare Local Internet Deals | 56 | 5.0★ (13) | 11 mi |
Also serving Fontana
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.
| Business | Google rating | Distance |
|---|---|---|
| Affordable Business Phone Service | In Fontana | |
| Agility Integration Corporation | 4.5★ (2) | 11 mi |
| ALine Telephone | 4.5★ (2) | 10 mi |
| Alquest Technologies, Inc. | 5.0★ (2) | 20 mi |
| American Tower Corporation | 4.0★ (2) | 13 mi |
| Connections 87 | 5.0★ (2) | 21 mi |
| D & M Communications Inc. | 5.0★ (1) | In Fontana |
| DataXTel Communications | 5.0★ (1) | In Fontana |
| Gigastorm IT Services | In Fontana | |
| Integrate NCS | In Fontana | |
| IntelesysOne | 5.0★ (2) | 9 mi |
| MC Electric dba MC Contracting | 5.0★ (2) | 16 mi |
| PhonePlatform.com | 5.0★ (2) | 21 mi |
| Rolcom Inc | 5.0★ (2) | 17 mi |
| SmarterHome.ai - Compare Local Internet Deals | 5.0★ (2) | In Fontana |
| SmarterHome.ai - Compare Local Internet Deals | 5.0★ (2) | 8 mi |
| SmarterHome.ai - Compare Local Internet Deals | 5.0★ (2) | 9 mi |
| SmarterHome.ai - Compare Local Internet Deals | 5.0★ (2) | 14 mi |
| Solo Telecom Inc | 5.0★ (2) | 8 mi |
| WorldWideTech | 5.0★ (1) | In Fontana |
How we ranked Fontana business phone system providers
We scored 300 Fontana 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.
| Factor | Weight | Computed from | In Fontana data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 15% | Number of Google reviews, compared with the most-reviewed IT firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday and 24/7 support | Measured |
| Service focus | 15% | How clearly the firm does this service (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its IT Firms Ranked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The firm links to IT Firms Ranked from its own website with our badge, checked periodically | Measured |
| Client reviews | 10% | Verified client reviews collected by IT Firms Ranked: their rating and how many there are | Measured |
How to choose a business phone system provider
- Ask whether the system is cloud-hosted or installed on site, and who maintains it.
- Check internet capacity and backup: a cloud phone system stops when your connection does.
- Ask how 911 locations are registered for each phone and for remote staff.
- Compare per-user prices on the same features (call recording, queues, integrations).
- Ask for two or three references from clients of your size and industry, and call them.
- 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 Fontana: frequently asked questions
Who is the best business phone system provider in Fontana?
By IFR Score, the highest-ranked business phone system provider in Fontana, CA is Call Tools with an IFR Score of 67/100. 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 300 business phone system providers on nine factors, last updated November 9, 2026.
How many business phone system providers are there in Fontana?
ITFirmsRanked ranks 300 business phone system providers serving Fontana, CA. 1 of them is based in Fontana; 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 Fontana work on weekends?
150 of 300 ranked business phone system providers post Saturday hours and 123 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 Fontana business phone system providers have?
The median Google rating among 300 rated business phone system providers in Fontana 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 Fontana count in this ranking?
Yes, if they are within 50 mi of the Fontana 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 Fontana 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 Fontana
- November 2026: IFR Scores recalculated for 300 business phone system providers serving Fontana.
- November 2026: 1 duplicate listing merged.
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