this is a phone problem, not caused by your X. Try the SIM in an unlocked phone or one from the same provider, and that way you can know if the SIM is bad (not likely) or the phone is the problem (more likely). You can also try cleaning the SIM contacts on the phone.

__________________
BMWCCA Chapter President, Hawaii Chapter (fmr)
03' X5 4.4i, 02' MCoupe, 99' MCoupe (sold), 88' M3, 01' E39 M5