Apparently, iOS 11+ defaults and some other phone keyboards cause apostrophes that people type to be changed to right or back single quotes. This causes a player that is using iOS when changing their Bungie name to end up with a unicode character that other players can't type when they are trying to find them in game ("Search by Bungie Name"). Can you please look into converting the unicode right and back single quotes to the standard typable apostrophes? I suspect double quotes may have the same issue, but I haven't verified them.
Ref: iOS default issue https://forums.developer.apple.com/forums/thread/89706
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Just having a separate column in a table that they use for searches that uses the normalized version (just apostrophe) and making sure the query text uses only the apostrophe would be sufficient. But yes, having semi support for these Unicode variants with no matching support for some sort of query expansion was a mistake.