Phone hanging up call if second caller calls during a call

[gregorg1]

Since a few days I got the oreo update.

After this I recognized tha sometimes calles were interrupted.

Today I found out the reason: If I am in a call and somebody tries to call me the phone interrups the first call with no message and doesn´t signal the second call.

I can´t initiate conference calls because if I dial the second participant phone hangs up the first line.

Can some of you prove that?

Im registered with T-Mobile in germany.

[Uliwooly]

@gregorg1

This might seem like a dumb suggestion but do check with your carrier/network as sometimes they have to enable this feature on their end

[gregorg1]

Uliwooly you are right. Knocking (Anklopfen in german) has to be enabled. And it is. And even if it isn´t enabled: Phone shouldn´t hang up first call if somone tries to call me during first call.

That makes the phone unusable because I´m often in this situation .

I recognized the problem days ago when I was calling with a customer and the call was interrupted for three times. My wife told me later that she tried to call me thre times.

Today I tested it out and it is reproduceable. Works every time I try it.

Doesn´t happen with my XZs and my old Z5.

I will stop using the phone this week if there is no fix.

Kind regards

[Uliwooly]

@gregorg1

Open the Phone app > menu > settings > calls > Additional settings > Call waiting > is it enabled? 

[gregorg1]

Hello Uliwooly,

of course call waiting is enabled, but it has absolute nothing to do with the problem.

I think you didn´t realize the problem.

If i am in a call the phone "hangs up" this call if somebody tries to call me. I don´t see anything on the screen that somebody tries to call me.

Thats the problem!

Kind regards

[EIFACH_CJ]

so, did you solve it? is there a fix?