T-Mobile Samsung Galaxy S4 receives update for Visual Voicemail and more3
168MB, T-Mobile suggests that your Samsung Galaxy S4 has at least 50% battery life when you download and install the software. While the update is available now from Samsung Kies, you might not receive the OTA notification immediately as updates sent out via this method are usually disseminated in waves.
If you need some help in downloading the update, you can get help from T-Mobile by clicking on the sourcelink.
source: T-Mobile via AndroidAuthority