Do I have to wait for my gtl phone account balance to reach before I can add or switch over to inmate aid. Discount phone monthly service

You should switch over ASAP. because the InmateAid number will stretch your GTL account balance getting you an extra three calls per $20. It's the only way to save.

Look for InmateAId's new federal inmate program coming this Spring where the federal local numbers are a flat rate of only $8.95/month.