Step 2. Reboot your Huawei P smart 2021. Holding down the power button on the right side of the phone for 2 seconds will bring up a prompt to switch off the device, go into airplane mode, or restart the device. Press the restart button and wait for the Device to restart; this should clear up any problems that were causing the problem.
Fix low audio on calls in Huawei P smart 2019. According to the information given above, it seems to be a software-related issue. As it is given in the problem the volume is set to a high level, the speaker is normal, and Bluetooth is not working, then, you have to check the software issues which cause the low audio on calls on Huawei P smart 2019.

P Smart 2019, 3 days old Updated to Android 9.0.1.142 Problem: in some apps / menus, the screen brightness changes by itself. All screen / brightness options are set to manual - check second 33. Smart resolution is turned off. There are no apps that have permission to chenge brightness

The following are the indications of a Huawei P smart 2019 no sound problem/issue: The Huawei will ring, but the speaker will not function for anything else. No sound at all for calls, apps, music, and so on on the Huawei P smart 2019. The Huawei has become locked in headphone mode.
hey guys i hope you all are fine . this is new solution of psmart 2019 speaker problem #psmart2019 #psmart #huawei #speaker #jumper #speakerphone #notw
EMUI 12.0: Go to Settings > Sounds & vibration, touch and listen to each selected tone under the ringtone, message tone, and notification tone categories, to check if it is the automatically played tone that you heard. If yes, you can select a tone under Preset sounds or select None. 4. Check the app notification tone.
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huawei p smart 2019 sound problem