You might experience issues with the loud speaker after upgrading to Android™ 7.0 (Nougat). When watching videos and during calls, when using hands free, you may experience low volume. The ringtone volume, the notification sound, the music speaker volume might decrease. This is a known issue and will be fixed in software version 32.3.A.2.33.
Note! The new Android™ 7.0 software update with build number 32.3.A.2.33 is now available. It fixes the issues described in this article. Software rollouts are a phased process – timings & availability may vary by market/carrier.