OnePlus has been known for its long support of its products in terms of released updates almost from the very beginning of its market activity. Phones such as OnePlus 3 and OnePlus 3T managed to receive as many as three major system updates, which in the case of smartphones from other manufacturers does not take place and users are often forced to install unofficial system updates. Unfortunately, a few hours ago, sad information appeared on the Internet for the owners of the two OnePlus' phones mentioned earlier. The latest security update is the last released for these two phones.
The latest system update for OnePlus 3 and OnePlus 3T improves security in phones to the patch dated for October 2019. In addition, firm updated Google Mobile Services and producer removed some minor bugs. The last update is released in batches, so if you haven't received it yet, it will officially be available for download to you within a few days at the latest.