Build Your Plan turns mobile service into a clear set of choices: where service needs to work and whether your plan should carry a number for calls and SMS. Choose coverage first, then number service. Review the quote before checkout so the plan matches how you actually stay connected.
Key Takeaways
Coverage sets the countries your plan is designed to serve.
Every Onyx Mobile plan includes 30GB high-speed data and unlimited fair-use managed data thereafter.
An Onyx number is optional, but it matters when calls, SMS, recovery, or verification are part of your service.
Voice and SMS bundles attach to the number, not to data-only service.
The app quote is the final plan review before payment.
Before You Start
Create or access your Onyx account first.
Know where service needs to work. A plan choice starts with coverage.
Know whether you need a number for calls, SMS, recovery, verification flows, or a stable contact point.
Confirm device compatibility before checkout if you have not used eSIM on this phone before.
Choose Coverage
Coverage controls the plan options you see next.
Onyx Mobile currently uses these public coverage plans:
USA Unlimited
Europe Unlimited
Asia Unlimited
Global Unlimited
Choose USA, Europe, or Asia when your service need stays inside that coverage area.
Choose Global when you move across supported regions. If one country matters most, check coverage before payment.
Understand Data
Every Onyx Mobile plan uses the same simple data policy.
Each plan includes 30GB high-speed data.
After 30GB, data remains available under fair-use management.
There are no customer-facing data bucket or speed-tier choices.
Coverage quality and speed can still change by location, building, device, and local network conditions.
Choose Number Option
Choose data-only if mobile data covers the job.
Add an Onyx number if you need calls, SMS, account recovery, verification flows, or a stable contact point.
Number service depends on the selected coverage, telecom rules, voice support, SMS support, and number inventory. The app shows the number path before checkout.
Choose Voice And SMS
If you add an Onyx number, choose the bundle attached to that number.
Starter fits light calling and SMS use.
Plus fits regular communication.
Unlimited fits heavier eligible talk and text use when the selected plan supports it.
The bundle belongs to the number. Number service stays attached to the plan.
Review Before Checkout
Before payment, review:
coverage
number choice
voice/SMS bundle
due-today total
monthly recurring total
Change the plan before checkout if the quote does not match your intended use.
What You’ll See
Build Your Plan moves through a controlled sequence:
Choose coverage.
Choose number option.
Choose number bundle, if you add a number.
Review plan.
Start checkout.
The quote updates as you change the plan. Treat the quote in the app as the plan truth before payment.
Decision Check
Before checkout, make sure the plan supports the way you expect to stay connected.
| Plan choice | Check | Continuity rule | |---|---|---| | Coverage | Does the selected plan include where service needs to work? | Choose the coverage that matches your real movement, not the cheapest label. | | Number | Do you need calls, SMS, recovery, verification, or a stable contact point? | Add an Onyx number when communication path matters. | | Voice/SMS | Did you choose the bundle attached to the number? | Keep number service and communication allowance together. | | Quote | Do due-today and monthly recurring totals match the plan you chose? | Treat the app quote as the final review before payment. |
FAQ
How do I choose the right Onyx mobile plan?
Start with coverage, then decide whether you need an Onyx number. If you add a number, choose a voice/SMS bundle before reviewing the quote.
Should I choose USA, Europe, Asia, or Global?
Choose USA, Europe, or Asia when your service need stays inside one supported coverage area. Choose Global when you move across multiple supported regions.
How much data do I get?
Every Onyx Mobile plan includes 30GB high-speed data and unlimited fair-use managed data thereafter.
Do I need an Onyx number?
Choose data-only if mobile data covers the job. Add an Onyx number if you need calls, SMS, account recovery, verification flows, or a stable contact point.
Why do I need a bundle if I add a number?
An Onyx number includes voice and SMS entitlement. The bundle defines the calling and SMS allowance attached to that number.
Can plan options vary by region?
Yes. Coverage, number service, voice/SMS support, and pricing can vary by region, local telecom regulation, and supported service policy.
Related Guides
Step 1
Choose coverage
Pick the plan that covers where service needs to work.
Step 2
Choose number option
Use data-only or add an Onyx number.
Step 3
Choose voice and SMS
If you add a number, choose the bundle attached to that number.
Step 4
Review the quote
Confirm due-today and monthly recurring totals before checkout.
Frequently asked questions
How do I choose the right Onyx mobile plan?
Start with coverage, then decide whether you need an Onyx number. If you add a number, choose a voice/SMS bundle before reviewing the quote.
Should I choose USA, Europe, Asia, or Global?
Choose USA, Europe, or Asia when your service need stays inside one supported coverage area. Choose Global when you move across multiple supported regions.
How much data do I get?
Every Onyx Mobile plan includes 30GB high-speed data and unlimited fair-use managed data thereafter.
Do I need an Onyx number?
Choose data-only if mobile data is enough. Add an Onyx number if you need calls, SMS, recovery, verification flows, or a stable contact point.
Why do I need a bundle if I add a number?
An Onyx number includes voice and SMS entitlement. The bundle defines the calling and SMS allowance attached to that number.
Can plan options vary by region?
Yes. Coverage, number service, voice/SMS support, and pricing can vary by region, local telecom regulation, and supported service policy.
Ready to choose your plan?
Pick coverage and number options, then review the quote before checkout.