I can't get any of our routers (including an RV220W, an SA540, and three Linksys E4200 v1's) to work with Safari on iOS. If we allow http access on the E4200 v1's, which we refuse to do, then it will work. The combination of https and iOS seems to be the culprit.
I don't think there is anything Cisco can do. I believe it's Apple's implementation of Safari on iOS.
We looked through the Safari options in iOS and we couldn't determine how to add exceptions or bypass secure sites (https) with invalid certifiates. We didn't even see where a user could install a certificate.
Like I stated before, once we disabled http access on our E4200 v1 routers (https access only) we could no longer access them on iOS.
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