Since the time of miui10, function of being able to record voice call during call session was not available and many users have been complaining about it, including me. One of the call options that the miui10 possessed which was not found in other brand of phone, was the option of being able to switch SIM cards during calls I.e when making call with SIM 1 and you notice your airtime is about to finish. You can automatically switch the call to SIM 2, where you have enough airtime. This feature seemed unique but not useful because most users hardly use it. So I hope Redmi note 9 pro Gets Voice Call Recorder In Latest coming Upgrade.
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