hi, i have a nokia 3100 and i have a normal sim, anyway, can i put a kic pre pay sim in, its for when i go over my mins, so i dont get charged, dont ask, its my ×××× bro, who dosent like me goin over, he like overcharges on my half when i do, can i and does it have to be unlocked and how much does it cost(the sim)

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