Galaxy Z Fold 2 at Sprint and T-Mobile gets April 2021 security patch Samsung had released the April 2021 security patch to its flagship foldable smartphone early last month. However, the update was limited to unlocked units of the Galaxy Z Fold 2. A couple of weeks ago, the update made it to the Galaxy Z Fold 2 on Verizon’s network in the US. Now, the same update is available for more carrier variants in the country. The Galaxy Z Fold 2 is now receiving a new software update on Sprint’s and T-Mobile’s network in the US. The update carries firmware version F916USQU1DUCE and includes the April 2021 security patch. This update fixes various critical security vulnerabilities found in Galaxy smartphones and includes 21 fixes from Samsung and more than 30 fixes from Google.