The Samsung Galaxy S9 and Galaxy S9 Plus are now receiving a new set of patches on T-Mobile's network, with the third largest wireless carrier in the United States noting that the package comes with security improvements without specifying on that claim. While the new firmware has been confirmed as shipping with the March 2018 Android security update, some Galaxy S9 and Galaxy S9 owners insist they were already running that patch, whereas others believe this is the first occasion on which T-Mobile pushed out last month's update to Samsung's latest flagships operating on its network.
The new patch for the 5.8-inch Galaxy S9 is just over 343MB in size and is identified by the version number G960USQU2ARC6, whereas the software that's now rolling out to the 6.2-inch Galaxy S9 Plus weighs slightly above 373MB and is marked as build G965USQU2ARC6. The unlocked variants of the two phablets sold in the United States still haven't received the March security update, with Samsung previously explaining such models require more testing as its engineers must verify they work on all networks in the country instead of just one that carrier-locked devices must be compatible with. That setback only appears to be affecting the units powered by Qualcomm's Snapdragon 845, whereas those with Samsung's own Exynos 9810 sold outside of North America, Mexico, and China already received the March 2018 security update in mid-March, several days after the South Korean tech giant officially released its newest high-end smartphone series.
The Galaxy S9 and Galaxy S9 Plus will celebrate their first month of global commercial availability on Monday, with recent reports suggesting the two handsets aren't selling as well as their predecessors did last year. That state of affairs may prompt Samsung to release its S Pen-equipped Galaxy Note 9 prior to the usual late August launch window used by the company's secondary flagship series, sources claimed last month. The Galaxy S9 and Galaxy S9 Plus are still widely expected to be the best-selling Android smartphones of the year, according to numerous analyst predictions.