New build (L720T): L720TVPUBNG5

[grapkoski]

Looks like international wifi calling is making its debut for the Spark GS4s.

• HD Voice Icon support
• International Wi-Fi Calling support
• Google security patches

Find and update the software version on your Samsung Galaxy S4

 

[UJ95x]

Yup, this was on the front page earlier
Samsung Galaxy S4 with Sprint Spark adds international Wi-Fi calling | Android Central

 

[djdonnyk]

My build number is different but I now have HD voice icon.

Sent from a device beyond your wildest dreams!