See every android upgrade of samsung phone is with a new security patch and the april security patch was released in 26 april 2024 so it's possible that samsung might release it in 26 may 2024 I predicted this in my way because I'm a techie I know little coding, many commands and done many experiments and custom firmware on my galaxy m12 and I also own a15 5g
Its available in the US only for phones locked with the verizon network,the update will soon spread to unlocked phones in the US, so u'll have to wait for sometime....
