Data stops after upgrade to 7.1

[Rocco]

Also, the apn are located at settings/Network&internet/SIMs/T-Mobile/Access Point Names .

No Mobile Data since update

Thank you thank you thank you RedEarth Prophet. Eureka! That did it. Delete the APN then re-enter the settings. I had been without Data for a month, what a nightmare it was. Pierre thanks you. Where do I send the money?