Dialed phone numbers are in the wrong format (international, should be US)
Recently, I traveled to Switzerland with my iPhone 13 Pro. I have an unlocked phone with my usual T-Mobile e-sim, but on this trip I added a second e-sim for data only in Europe. I noticed that when I added this second e-sim my contact numbers disassociated themselves with their contacts, and many had to be manually fixed.
Upon my return to the US, I deleted the European e-sim from my phone, but when I go to dial a number (any arbitrary US phone number) it all appears in the international format and I can't find a way to change it back.
I've tried switching my language/region to another country and back, along with toggling my dial assist settings. The only thing left I can think of to try is resetting network settings, but I'm concerned by doing so it'll mess up my e-sim and it'll be painful to fix it.
Additionally, you should know that I have had another physical SIM card from Japan in the device from prior to my trip to Europe. However, this is turned off and the service is not active, plus it never caused issues before now.
How can I fix this?
iPhone 13 Pro