Onyx Blog
Guides for using Onyx.
Practical guides, support articles, and hub pages will appear here when they are published.
Core guides
eSIM Guides
Start here if you want the practical path through account setup, plans, coverage, purchase, activation, and setup requirements.
Setup
Activation
Everything a customer needs to install and activate service cleanly the first time.
Support
Troubleshooting
When activation, coverage, data, or routing goes sideways, this hub points to the right fix.
Destination readiness
Coverage
Check what Onyx can support before you buy, travel, or switch regions.
Identity
Onyx ID
Understand profile visibility, permissions, trust, verification, and connected apps.
Wallets and spending
Payments
Cover wallet access, payment eligibility, card features, and FX where available.
Chat and communities
Communication
Explain how messaging, calls, groups, communities, and connected communication fit together.
Mobile Service · Jun 4, 2026
How to check device eligibility for Onyx mobile service
Confirm eSIM compatibility, unlocked status, network bands, roaming, and dual-SIM readiness before checkout.
Mobile Service · Jun 4, 2026
How to check Onyx coverage before you buy
Confirm the countries, coverage band, number support, and device readiness you need before checkout.
Mobile Service · Jun 4, 2026
How to choose the right Onyx mobile plan
Choose the coverage, data, number, and voice/SMS options that match how you use Onyx.
Account · Jun 4, 2026
How to create and access your Onyx account
Create or return to the Onyx account that keeps your service, profile, support, and connected features together.