I just had my wife call me on my 'main' number, and the phone with the duplicate SIM did in fact ring and we were able to have a conversation.
1 of 1 people found this helpful
There likely isn't a setting that you need to worry about, though you can always check the network modes for each device. In the end, as long as the device supports a frequency currently available in your area, there is no reason it shouldn't be able to make and receive calls on the duplicate SIM. In some cases, you may see signal if there is a T-Mobile tower even if it the device itself isn't supported. One thing I would encourage is taking a look at the coverage maps at 4G LTE Coverage Map | Check Your 4G LTE Cell Phone Coverage | T-Mobile to see if those devices are fully capable for the area?
At the same time, being able to receive a call suggests that there isn't a reason you shouldn't be able to make a call. In that case, I'd recommend calling into our DIGITs support line 1-844-889-5651 to see if they can assist with troubleshooting as well.
Thanks for the reply, Tim!
Looks like I'll be giving those guys another call.