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Documentation Index

Fetch the complete documentation index at: https://developers.telnyx.com/llms.txt

Use this file to discover all available pages before exploring further.

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Getting SIMs

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Physical SIMs

Physical SIM orders go through Mission Control — you can’t order them via API.
  1. Order — Set quantity, add to cart, and check out. Telnyx ships triple-cut SIM cards (2FF/3FF/4FF) to your address.
  2. Register — Each physical SIM has a 10-digit registration code printed on the card. Register via the portal (Register SIM Cards tab, manual or CSV) or the API (POST /actions/register/sim_cards). During registration you assign a SIM Card Group and optional tags.
  3. Enable — Once registered, activate the SIM on the network via POST /sim_cards/{id}/actions/enable or the portal.
After registration, the SIM appears as a standard SIM Card resource. All further management is via the API.

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eSIMs

eSIMs are downloadable SIM profiles for consumer devices (phones, tablets, laptops) — not embedded SIM hardware. For eUICC hardware solutions, contact Sales. Purchase through Mission Control or the API (POST /actions/purchase_esims):
  • Portal — Set quantity, assign a SIM Card Group, choose initial status, add tags. $0.70 activation fee per eSIM. No cart — purchase is immediate.
  • API — POST /actions/purchase/esims. Same parameters, same instant provisioning.
Either way, you get an activation code immediately. Provide it to the device via QR code or direct input for OTA provisioning. No shipping, no registration step.
eSIM activation codes are one-time use. If the device loses the profile, you need a new eSIM purchase — you can’t re-download the same profile.
After provisioning, eSIMs become the same SIM Card resource as physical SIMs. All API operations are identical.

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Next Steps

Once you have SIMs in your account, see Lifecycle for state management (enable, disable, standby, delete) and SIM Card Groups for fleet configuration.