none i can think off... parang di ubra eh.... first, a mobile phone uses the SIM card to acquire signals.... kung BT to BT, parang di ubra.....

and there are el-cheapo watches that have their own SIM.... i think i saw one sa olx. pwede mo din gamitin yun.

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none i can think off... parang di ubra eh.... first, a mobile phone uses the SIM card to acquire signals.... kung BT to BT, parang di ubra.....

and there are el-cheapo watches that have their own SIM.... i think i saw one sa olx. pwede mo din gamitin yun.