Originally Posted by
paperwastage
Do you expect to receive/call out on your USA lines (Verizon or T-Mobile) on sim1 , while roaming overseas on sim2?
Unfortunately, iPhones have this feature called DSDV while Samsung phones are complicated/support it under very limited circumstances. DSDV allows you to route your sim1 VoLTE calls over your sim2 data (similar to WiFi calling, just over sim2). So your sim1 calls are treated like WiFi calling, no intl surcharge.
On Samsung: You can still use dual sim - can receive intl text messages over your sim1 (typically free on T-Mobile/,Verizon plans), while your data goes over a roaming travel sim2 with cheaper perGB rates
Thank you for your reply. I will have my primary number (Verizon psim) forwarded to my T-Mobile number and will receive incoming calls that way. I was planning to turn off cellular roaming for Verizon and set my T-Mobile (esim) as the primary for incoming/outgoing calls. I intend to use WhatsApp and FB Messenger to chat/video call with family while away.
I read about turning Wi-Fi calling on and I hope that by doing so, I won't be triggering the Verizon $10/day international charges.
"They" certainly don't make this easy LOL
Thanks again for your input, D