02-15-2016 01:05 AM
When i select under Preferred sim for mobile data to sim 2 it it only says data subscription change in progress and do not change it to sim 2 it only . I have vodafone in sim 1 and airtel in sim 2 . So i changed the sim and same happens by default it takes only vodafone as mobile i cannot select airtel .
This problem started after marshmallow update
07-21-2017 09:06 AM
I have the same issue. I have SIM 1 - JIO 4G & SIM2-Vodafone 4G Sim. The problem started with 4G service of Vodafone. Tried to switch the preferred SIM for mobile data many times but Vodafone shows 4G signals fluctuating. Replaced Vodafone SIM but it is in vain.
Tried suggestion was given by Mr. Chinmaya but the issue still persists.
Now both networks are disappearing and reappearing periodically. Preferred SIM for Data option locked on Vodafone SIM and just shows "Data subscription change in progress" and nothing happens when trying to change it.
Any solution apart from "clear Data"?