How to add Sprint Call Plus on unlocked s8+?

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Mar 13, 2015
Samsung Galaxy Note 20 Ultra
I'm using an unlocked s8+ on Sprint network. Everything works include Wi-Fi calling. But I didn't get any update for call plus like Sprint version did.

Is there any way to add call plus on unlocked s8+? Hope I don't have to flash Sprint firmware.


Sent from my SM-G955U1 using Tapatalk


New member
Nov 17, 2017
I just flashed my phone with Sprint firmware. Are you supposed to get the Sprint splash screen? I didn't.....I cant find the Calling Plus setting. Where is it? :confused:

PS. Just internet while on a call. So, not working, why?
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