Recently purchased a Pixel 2 and used SIM card from existing iphone 7 to activate the phone. Decided to go back to the iPhone and put the same card back in the iPhone and reactivated...no issues there. However, when a call is received and goes to voicemail I receive a text message that is unintelligible and does not link to the voicemail. Also, I can only access voicemail by dialing into my inbox using a PIN. I also have no option to setup the native Apple VVM - voicemail app only shows “call voicemail”. Have gone through all the recommended procedures to correct (cellular data is working, hard reset of phone, reset Network settings, calling phone and leaving a message, etc.) Am running iOS 11.1 with latest available carrier settings.