I was travelling from USA to India for around 3 weeks. I got one Indian SIM card from one of my friends Before landing, I switched the SIM(from USA to India). After that restarted and I got one notification that "do you want to use dial assist feature" - essentially that was to dial my India contact numbers with +91 or something like that. I opted yes. That screwed up my entire Contact list. India phone numbers are dialed with 011-91 and then the number, so that are not working. USA numbers are no longer having +1 in front of them. Even after reversing that dial assist feature - I am facing this issue. What to do? Any help?