The phone number on the side of the cab is in the 206 area code which is in fact Seattle, but the phone number begins with a non-existent 197 exchange.
Carol and George are meeting for their date at 7PM but when the superintelligence sends Carol messages her to say that their booking is in 20 mins the message time on her phone is 4:41PM.
A map shown in the movie refers to "Pike's Place Market," which is a common mistake by visitors to Seattle. The market is properly called "Pike Place Market."
The view from the penthouse apartment puts Carol north of the Great Wheel (a la Pike Place Market), even though she was in Pioneer Square (south of the Great Wheel).
If the technology in Europe was shut down, George's flight to Ireland would've been cancelled before he went to the airport.
How could she still watch her favorite morning television show if everything around the world is being shut down, including satellites, the internet and all power? Power may not not have been out yet locally (VERY locally), but if the cell services were already down, then broadcast, cable and satellite systems would also be disrupted.
George was leaving for the airport to fly to Ireland--and the same morning, he was still packing, had to take his packed boxes to storage, close his house and return keys. There is no way he would have time to do all these things.
The cyber command center is quoted as being in full-data lock down, off-grid and secure but the president's meeting is online with the United Nations. Whilst this could be encrypted and secure, the risk of an omnipresent artificial intelligence being able to access this is extremely high.