Oneplus 9 pro Software Update

The sad thing is the phone has been paid for.  From what I can tell my sim is unlocked.  My bootloader is unlocked. (Developer option).  I just don't want to risk bricking the phone.  I'm annoyed with the bugs I encounter randomly with A12.  I'm annoyed by a couple of easy access options that went away with A12.  But what really gets me is that with the cost of this handset and the lifespan expected from it, T-Mobile and One Plus will eat up a good 6 months before they likely deliver a buggy release of A13.  Meanwhile folks with non carrier versions of this handset can used the One Plus app to load what they want.  Once a handset is paid off not just the SIM should be unlocked.  The handset should look like an unlocked phone at that point. Discount or not it's paid for.

OnePlus hasnt had the best of luck lately with updates..12 was a bit of a disaster..13 looks to be no different when it comes to the carrier variants.

I think it wil take 2 months at least 

Hoping this happens fairly soon. The current release of Android 12 for the LE2127 has some nasty bugs surrounding Android Auto, Do Not Disturb, Wi-Fi calling, and location services. All fairly serious stuff. 

when it finally moves past development

https://www.t-mobile.com/support/support/phones-tablets-devices/software-updates