I iMore Question Nov 2, 2013 #1 Currently i am using X-Sim on iphone 4s with ios 6.1.3. Is it save to upgrade to ios 7 with this sim?
Currently i am using X-Sim on iphone 4s with ios 6.1.3. Is it save to upgrade to ios 7 with this sim?
kch50428 Well-known member Oct 22, 2010 21,025 305 0 Visit site Nov 2, 2013 #2 Have you checked with X-sim's web site?