@maviskankam you need to start with the basics. Things like
# Restart your phone.
# Check your volume settings. Make sure that your phone is not in silent mode.
# Clean the speaker grills. The speaker grill on your phone can get clogged with dirt and dust, which can block the sound.
# Check for update of your phone's software. IF there are any updates, proceed to install them. Tecno may have found a software issue that will be resolved with an update.
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Now, if none of that made a difference and if all of your software settings are properly set to support sound, then the issue could be a bad speaker.
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Since iFixit does not yet have a specific guide for this, use something like [https://www.youtube.com/watch?v=Fy7Of0rw6G0 |this video] to work on your phone.
@maviskankam you need to start with the basics. Things like
# Restart your phone.
# Check your volume settings. Make sure that your phone is not in silent mode.
# Clean the speaker grills. The speaker grill on your phone can get clogged with dirt and dust, which can block the sound.
# Check for update of your phone's software. IF there are any updates, proceed to install them. Tecno may have found a software issue that will be resolved with an update.