Ive seen some mutterings about various drawbacks to eSIM usage.
Heres a few:
www.pcmag.com
My issue is that I have an iPhone 11 Pro Max with
- Verizon on physical SIM
- AT&T on eSIM.
Set up and recognition was easy.
The issue is that when the Verizon account is active the AT&T service takes a huge performance hit. On a Speedtest, I pull 60-80mbit easily when only the AT&T eSIM is active. When the Verizon is active as well that number plummets to 20%. I dont even have Verizon service where I am testing it, purely Wifi calling mode.
I had found some other forum post the other day that I cannot locate where somebody is talking about this but there is no solution. Any thoughts?
Heres a few:

Apple's Dual-SIM Tech Ruins Verizon Coverage
Apple's innovative new dual-SIM system doesn't work well with Verizon's network yet.
My issue is that I have an iPhone 11 Pro Max with
- Verizon on physical SIM
- AT&T on eSIM.
Set up and recognition was easy.
The issue is that when the Verizon account is active the AT&T service takes a huge performance hit. On a Speedtest, I pull 60-80mbit easily when only the AT&T eSIM is active. When the Verizon is active as well that number plummets to 20%. I dont even have Verizon service where I am testing it, purely Wifi calling mode.
I had found some other forum post the other day that I cannot locate where somebody is talking about this but there is no solution. Any thoughts?