help needed for storm2 9520

[tuscan7869]

further to my previous post someone has suggested that my sim card problem could be the result of damage to the frequency chip as 3,virgin,orange and t-mobile use the same frequency whereas o2 and vodafone use a different does anyone know if this can be replaced or fixed

[blackberry-unlocking710]

The Storm 9520 is included with the bands: GSM 850 / 900 / 1800 / 1900