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yeah its fine on my 6 too, but my 5c Safari just won't load any pages, Ive tried on WiFI and ATT. No luck.
 
Have you tried deleting Safari data and essentially resetting it? What about restarting the phone? Perhaps resetting network settings?
 
I've traced the problem to a app that wasn't updated for 9.3, disabled that app and all is well.
 
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