T-Mobile Samsung Galaxy Note 5 starts getting May’s Android Security patch. The update comes with software build number N920TUVU4EQE1. Although the phone is running on March Security Patch.
As the update is rolling out over the air, So it might take some time to reach each and every unit. Meanwhile you can check it manually by going through the settings>>about phone >>software updates. Moreover, we recommends you that you should charge your phone up to 50% before start installing the update.