The following smartphone models have turned out to be low call quality for device reasons.
- Xperia10 II SO-41A
- moto e7
- LG style L-03K
- SHARP AQUOS Series
No compatibilities between the automatic software processing of the phone app AGEphone and hardware processing may cause noise and reduce call quality.
If you are using this service on these models, please consider changing to a work PC (Windows), or the following settings may improve the situation depending on the model.
Settings > Advanced Settings > Change the sampling frequency from the default to 8000Hz or 44100Hz.