so you are at a right place am an android developer and i developed automatic call recorder app and is running successfully in play storehttps://play.google.com/store/apps/details?id=com.ss.automaticrecorder

download my app on google playstorehttps://play.google.com/store/apps/details?id=com.ss.automaticrecorder

u need to have a jio sim for this.

turn adaptive wifi to off

check wifi settings i do have on nxt but i ll let u know go to wifi>advanced>keep wifi on during sleep >always try this and let me know