Call receiveing Problem with LTE preffered

[vghorbanian]

Hi everybody.
My Z5 dual, when is in LTE preffered mode, encounters problem in receiving calls. In 3g mode is not so. What I should do?

[NeoBeum]

You can turn lte off by dialling *#*#info#*#* and then selecting the bands to connect to

[vghorbanian]

And what's This info? A number?

[NeoBeum]

*#*#4636#*#*

Phone information menu

[vghorbanian]

You mean "set preffered network type"?
I did it before, only in WCDMA preffered my calls are normal. In any other mode with LTE it will be disrupted.

[NeoBeum]

Gsm only or does it switch by itself?

[vghorbanian]

See, When it is on WCDMA preffered mode, it switches by itself, G, E, H+, and calls are normal. On LTE preffered, switches G, E, H+, LTE by itself, and receiving calls will be unstable, so that when someone calls me, will hear nothing, not any beep, or unreachable message from network provider, Nothing!! And I don't receive anything either. And it will become normal again if I try to make a call, or restart phone.

[NeoBeum]

Does the Firmware version match the region you are in?
See if this other setting might be better.

Settings » wireless and networking - more » mobile networks » preferred mobile network

[Jonas]

Hi @vghorbanian,

I'm sorry to hear about that.

Do you always experience this when the phone is set to use LTE, or does it only happen in certain places/locations?

Is everything else working fine such as, using mobile data and sending / receiving text messages when you are connected to the LTE network?

If you are using the phone with 2 different SIM cards, is it different service providers, or are they the same? If they are different, could you please try and switch your SIM 2 card to the SIM 1 slot and see if you experience the same behaviour with another service provider?

If you are using the phone with only 1 SIM card, could you try borrowing a SIM card from a friend, colleague or family member and see if there is any change?

Let me know how it goes!

[vghorbanian]

Hello everybody,
Specially dear NeoBeom and Jonas.
It's 3 days that I've upgraded to Android 7, and there is no problem yet with LTE preffered mode, and everything is fine. Thanks for your attention, and I'll inform you if any disorder occurs.