Hotlink from where? Websites?
I just copied a random number from an email and pasted it in Dialer on my i9500. No issues at all.
Went to Facebook and looked at my profile where my cell# is added. Clicked on the number and that took me straight to Dialer.
OT MaxDB, CD1, CD5, J5, GD96, ME45, T68i, X6, CX65, A925, E398, MPx200, X6-2, OT715, D600E, W810, M600i, BB8100, W880, N95-2, P1i, Ignito, W880, X1, MS1, MS2, TP851, XT910, GTab 10.1, SGS3, Galaxy S4, Galaxy Note 10.1