Intermittent Call Failures Being Observed February 22, 2022 GTI AM Post in Latest Blog Info: Incident Notice: Intermittent Call Failures Being Observed in ATT Network (Dallas) Product: GTI Global Mobile-X Details: We have detected and are investigating call failures on GTIGLOBAL service. The issue appears to be regional. If you are experiencing this issue, you may take one of these mitigating options – Go to network Settings – Mobile Settings and Select 3G Only – Go to Setting Mobile Network Selection and Manually Select T-Mobile Network We are in contact with partners as the investigation continues.