Samsung flagships are usually among the last to receive major Android updates. Although the international versions of the Galaxy S9 and S9+ received the Android Pie update in late-December, it's only now that the T-Mobile variant of the phone is starting to receive the OTA notification. The update began rolling out yesterday brings Samsung's newest One UI skin over Android Pie. Not only this, but the firmware upgrade also includes support for RCS, the next generation of SMS/MMS. T-Mobile's firmware release notes also mention support for Band 28 (700MHz) while roaming, general bug fixes and...