In my device (j7 nxt) , when sim1 is 4g and sim2 is 3g , then i can not connect to internet via sim2 in 3g connection. when i change the data connection to sim2 it change to 4g sim1 goes to 3g. There should have a option to turn on mobile data connection via 3g, when 1 sim is on 4g and another is on 3g . Thats all. please do needful.
Thank you for sharing your feedback. We would like to inform you that it is the device default feature as Internet will work on the highest network mode (4G/3G/2G) Auto mode and the other SIM slot network mode will be change.
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