Hi Guys,
My personal device (Nexus 6P), which i bought in USA and use VoLTE features through T-Mobile Network (i can say, very smooth). When I back to Brazil, try to test Nexus 6P on our test bed (All VoLTE features are supported), but failed. These are the technical symptoms:
1 - During the attached procedure, attach request message came with the following set: voice centric is cs voice prefered and ims voice secundary. It means, that the voice must go preferentially trough CS network instead IMS. Another issue is, device do not request create the second session (pdn connectivity request), only being attached on PS and CS network (combined attached).
2 - Subscrition on IMS-HSS/SAE-HSS is ok. Same IMSI worked with others devices.
3 - Checking the hidden menu (*#*#4636#*#*) the provisioning flag is already marked and even if i try to toogle, nothing changes.
4 - There are two frequencies, already test on band 3 (1800 Mhz) and band 7 (2600 Mhz). Both supports VoLTE.
Does google allowing Nexus 6P support VoLTE just in a specific network based on MCC+MNC? If yes, is that possible request to add more MCC+MNC? Or is it possible enable by software update (patch)?
Thank you
My personal device (Nexus 6P), which i bought in USA and use VoLTE features through T-Mobile Network (i can say, very smooth). When I back to Brazil, try to test Nexus 6P on our test bed (All VoLTE features are supported), but failed. These are the technical symptoms:
1 - During the attached procedure, attach request message came with the following set: voice centric is cs voice prefered and ims voice secundary. It means, that the voice must go preferentially trough CS network instead IMS. Another issue is, device do not request create the second session (pdn connectivity request), only being attached on PS and CS network (combined attached).
2 - Subscrition on IMS-HSS/SAE-HSS is ok. Same IMSI worked with others devices.
3 - Checking the hidden menu (*#*#4636#*#*) the provisioning flag is already marked and even if i try to toogle, nothing changes.
4 - There are two frequencies, already test on band 3 (1800 Mhz) and band 7 (2600 Mhz). Both supports VoLTE.
Does google allowing Nexus 6P support VoLTE just in a specific network based on MCC+MNC? If yes, is that possible request to add more MCC+MNC? Or is it possible enable by software update (patch)?
Thank you
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