Setting Up Phone Calls from an Inmate at Lynaugh Unit: Registration, Call Rules, and Troubleshooting
Setting up phone calls with someone at Lynaugh Unit comes down to two things: registering your number correctly and understanding what TDCJ's phone system allows. Here's what you need to know—and what trips people up most often.
To receive calls from a TDCJ inmate, register your phone number at texasprisonphone.com. You'll need the inmate's TDCJ ID number to complete registration - have it ready before you start.
Tip: Don't have the TDCJ ID number? Look it up first using the online offender search, then come back to register your phone.
Calls max out at 30 minutes. You'll hear a one-minute warning before disconnection - start wrapping up when you hear it.
Heads up: All calls are subject to monitoring and recording, except calls to the inmate’s attorney of record.
- ✓ Allowed: home landline telephone numbers
- ✓ Allowed: post-paid cell phones
- ✓ Allowed: pre-paid cell phones
- ✓ Not allowed: internet services
- ✓ Not allowed: 800 numbers
- ✓ Not allowed: businesses
- ✓ Not allowed: pay phones
- ✓ Not allowed: international numbers
Need help with registration or have questions about the phone system? Call (866) 806-7804 - that's TDCJ's contact number for inmate phone support.
Note: TDCJ sources list conflicting hours for this line: 8 a.m.–5 p.m., 8 a.m.–4 p.m., and (effective Feb. 2, 2026) 8 a.m.–3 p.m., Monday–Friday. Check the current hours before calling to avoid a frustrating game of phone tag.
Registration requires the inmate's TDCJ ID number. If you don't have it, look it up through the online offender search first, then use it to register your phone.
- Call the inmate phone system support line - Use (866) 806-7804 for registration help or information.
- Have your details ready - Keep the inmate’s TDCJ ID number and the exact phone number you’re trying to register in front of you.
- Ask them to confirm your setup - Request that they verify your registration and help troubleshoot why calls aren’t coming through (for example, if the number type is being rejected).
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