How can you tell?
I’m asking because it is unclear to me how a certificate would be connected to location.
Does perhaps a website using location not work anymore (because the website perhaps depended on the certificate)?
There is no such thing.
(There is this terrain based military system though.)
By using a newer phone which can use the relatively new European system called Galileo, the Fairphone 2 can only use the relatively older GPS (USA) or GLONASS (Russia).