[Problem] Jerky sound for interlocutor during a call towards a landline

[RonanSégalen]

Good evening,

I'm a French owner of a Xperia Z1 since 1 year and 9 month, I made all system updates and my ISP is Numericable-SFR.

Sometimes, I call up contacts possessing a landline telephone. These complain to hear me in a jerky way and it makes the conversation very difficult. For my part, I've no problem to understand them except I'm obliged to activate the high-speaker because the sound is too low initially. I've already encountered this problem some time ago since the update for Lollipop (I think). After a few researches on forums, I've seen that some people have had this same problem and they desactivated subsequently the improvement of the voice and the suppression of microphone noise. I did it at this time and everything returned to order.

However, I've been faced the problem today again and I don't find a solution this time. For information, my interlocutors using a mobile phone receive me correctly (a few jerks perceptible nevertheless but unimportant compared to the landline). Besides, my mobile never have had a shock previously.

If someone have an idea of the orgin of the concern, I'll take it. However I would like to avoid to restore the factory configuration.

Thank you in advance,

Ronan Ségalen

[Uliwooly]

@RonanSégalen

Do you experience the same while on safe mode ?

[RonanSégalen]

No, everything is working on safe mode. I exit safe mode just now and I call on a landline. It works again on normal mode but I'm not sure it will carry on in a few days.

[Uliwooly · Accepted solution]

@RonanSégalen

If you experience this issue again, you might want to consider either repairing the phone with PCC or find the app that's causing this, perhaps its OK Google.

[RonanSégalen]

Ok thank you for these fast and precise answers. Besides, I've a question : is it normal that I've lost a few contacts in normal mode after using safe mode ?

[Uliwooly]

@RonanSégalen

Yes, Safe mode will request that you re-add a third party app account, such as box, you will have to re-log in and sync the contacts once more.