Reviewed on: April 05,2026
Inmate Phone Calls

Which inmate calling cards are supported

what is the brand name of the prepaid calling cards and the phone number on it? My husband bought one last week and says it is blocked and can not use it. Global Tel doesn't deal with calling cards at all so please dont give me their number.

There is no single, universal brand of prepaid calling card that works across all jails and prisons.
Ask The Inmate
Answered by a former federal inmate · 14+ years advising families
✓ Verified answer April 03,2013 · Inmate Phone Calls
1

There is no single, universal brand of prepaid calling card that works across all jails and prisons. Most facilities do not use traditional calling cards at all. Instead, they rely on their own contracted phone providers, and inmates must use the system set up by that specific facility.

If your husband says the card is blocked, it is likely because:

  • The facility does not accept third-party calling cards
  • The phone system only works with its approved provider
  • Funds need to be added to his official phone account instead

This is why services like Global Tel do not deal with calling cards. The systems inside correctional facilities are closed networks, and outside cards usually will not work.

The best approach is:

  • Confirm which phone provider the facility uses
  • Add money directly to your husband’s phone or trust account through that provider
  • Avoid buying third-party calling cards unless the facility specifically allows them

InmateAid is also working on its own calling solutions designed to work within these systems, which will provide a more reliable and cost-effective option once available.

Accepted Answer Date Created: April 03,2013
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About this answer: This response was prepared by InmateAid’s editorial team in consultation with former inmates who have direct experience with the federal correctional system. InmateAid has served families of the incarcerated since 2012. This is general information only — not legal advice. Last reviewed April 2026.