HI yes you can use your sim in Motorola Cliq mobile only if it is unlocked one ...Else if the phone is locked to some other network provider then until you unlock it you can't freely use it with any other GSM sim .You can easily unlock your phone using sites like OnlineGSMUnlock.com here they are providing unlock code for all mobile models at reliable cost .After unlocking the phone you can freely use it with any GSM sim .