The pro. I read now that the pro has it built in, it just needs to be unlocked. Unsure about the non pro. Probably safest route to stay with MiUi and EMUIare you using the OP7 Pro?
I've tried using joneplus on my OP6, but it kept prompting me to root when i initiated the app. so i just gave up and moved to MIUI and EMUI.
Considering getting the OP7, not the PRO (it's too darn big!!), only if i can get the Call Record to work.