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Head-to-head · Virtual Phone Number Services

Zadarma vs Sonetel

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score Zadarma #4 in Virtual Phone Number Services 8.7/10 Free plan · 7-day trial Free planFree trial✓ 0 of 3 features Visit Zadarma
Sonetel #5 in Virtual Phone Number Services 8.6/10 Free plan Free plan✓ 0 of 3 features Visit Sonetel

Zadarma leads on 0 checks, Sonetel on 1, and 1 is even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreZadarma · 8.7/10
  • Lowest starting priceSonetel · $9.95/user/mo
  • Free planboth
  • Free trialonly Zadarma

Zadarma scores higher on our rubric for virtual phone number services: 8.7 against 8.6 out of 10; our editors rank them #4 and #5.

Sonetel is cheaper to start at $9.95/user/mo against $39/user/mo.

Zadarma is the better fit for teams seeking a free-start cloud PBX with global reach. Sonetel is the better fit for small teams seeking numbers and calling apps.

  • Zadarma fits best

    Teams seeking a free-start cloud PBX with global reach

  • Sonetel fits best

    Small teams seeking numbers and calling apps

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Zadarma 8.7/10 Visit ↗ Sonetel 8.6/10 Visit ↗
At a glance
Editor score 8.7 8.6
Ranking #4 in Virtual Phone Number Services #5 in Virtual Phone Number Services
Best for Teams seeking a free-start cloud PBX with global reach Small teams seeking numbers and calling apps
Pricing model Free plan + paid Free plan + paid
Starting price $39/mo $9.95/user/mo (best)
Free plan ✓ ✓
Free trial 7 days —
Deployment Cloud, Desktop, Mobile, Browser extension Cloud, Desktop, Mobile
Platforms Web, Windows, macOS, iOS, Android, Chrome extension Web, Windows, macOS, Linux, iOS, Android
Support Live chat, Phone, Tickets · 24/7 Email, Live chat, Phone, Tickets, Docs · 24/7
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market
Features Zadarma 0/3 · Sonetel 0/3
SMS support Not checked yet Not checked yet
International numbers Not checked yet Not checked yet
Number porting Not checked yet Not checked yet
Specs
Number types Not checked yet Not checked yet
Included numbers Not checked yet Not checked yet
Supported platforms Not checked yet Not checked yet
Our review
Pros
  • Free Standard plan includes cloud PBX, CRM users and four voice menus
  • Call handling spans IVR, queues, routing, forwarding and voicemail transcription
  • Apps, SIP trunking and virtual or toll-free numbers support varied calling setups
  • Free Basic plan includes app calls, SMS-to-email and user voicemail
  • Paid plans add number bundles, international calls, transcription and recording
  • Web, desktop, mobile and API options support varied calling workflows
Cons
  • Free plan has only 200 MB of call-recording storage
  • Office World and Corporation plans have monthly and annual prices to compare
  • Plan minutes and number availability vary by region
  • Basic does not include the free number allowance offered by paid plans
  • Phone numbers and calls can incur separate charges on Basic
  • Premium and Business differ in number allowance, but share listed call features
Our verdict

Zadarma combines virtual phone numbers, cloud PBX and VoIP calling for businesses, call centers and distributed teams. It is suited to organizations that want to manage incoming calls through extensions, voice menus, queues and forwarding,…

Read the review →

Sonetel provides virtual local, mobile and toll-free business numbers with cloud calling for entrepreneurs and small businesses. Calls can ring in web, Windows, macOS, Linux, iOS and Android apps, or be forwarded to users, phone numbers,…

Read the review →
  1. ZadarmaVirtual Phone Number Services 8.7Free plan · 7-day trial
  2. SonetelVirtual Phone Number Services 8.6Free plan

Strengths and trade-offs

  • Zadarma — where it wins

    • Free Standard plan includes cloud PBX, CRM users and four voice menus
    • Call handling spans IVR, queues, routing, forwarding and voicemail transcription
    • Apps, SIP trunking and virtual or toll-free numbers support varied calling setups

    Where it doesn't

    • Free plan has only 200 MB of call-recording storage
    • Office World and Corporation plans have monthly and annual prices to compare
    • Plan minutes and number availability vary by region

  • Sonetel — where it wins

    • Free Basic plan includes app calls, SMS-to-email and user voicemail
    • Paid plans add number bundles, international calls, transcription and recording
    • Web, desktop, mobile and API options support varied calling workflows

    Where it doesn't

    • Basic does not include the free number allowance offered by paid plans
    • Phone numbers and calls can incur separate charges on Basic
    • Premium and Business differ in number allowance, but share listed call features
  • Zadarma8.7/10 · Free plan · 7-day trial

    A free-start cloud PBX with international numbers, call routing and apps across devices.

    Visit ZadarmaFull verdict →
  • Sonetel8.6/10 · Free plan

    Flexible virtual numbers and calling apps, with a free plan and paid call tools.

    Visit SonetelFull verdict →

More comparisons

All virtual phone number services comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update