It may locked to Network ,So you need to unlock it,Once you try another Sim card...it support all Sim and not support only one Sim card means it may be CDMA network,Because CDMA network Sim card will not work in Unlocked Phones,GSM phones can be unlocked from Network lock...CDMA Network locked Phones cannot be unlocked,So it support all other Sim card support only one Sim card means it sure locked Network,you can get the Free Unlock code from the site www.unlocking4free.com/samsung and Unlock it step by step.
You will most likely have to purchase a new sim card as some phones are sim card specific. Also try a jail breaking program or have it done.
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