Tmobile variant just received a update to 9.5.5 GM31CB
Is that the one with the old March 2019 Android Security patch?
correct, is this the same security patch on the international variant?
Sorry, I can't help you on that as I have the OnePlus 6T until the OnePlus 7 Pro 5G is launched.
no worries, it seems strange as the os version number is higher than international
This update, Oxygen OS 9.5.3 GM21AA with an April Security patch may well be for the global model in spite of the article alluding to T-Mobile (USA), the update includes, "Support VoLTE and VoWiFi for Thailand AIS", which would seem an odd addition for T-Mobile.
Packages with build tag GM21AA are supported on the following variants:
GM1917: Global/US Unlocked (?)
On the other hand, updates with build tag GM31CB are supported on GM1915 aka the T-Mobile variant of OnePlus 7 Pro. Further details can be found here.
thanks for the information sir.
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by Pym C., 2019-06-17