But I'm confused. The wireless carriers I've talked to claim that you can't use a tablet SIM card in your smartphone, so that you can get a data only plan. But I've talked to some store representatives who say it can be done. And I've read online about people being able to this.ut I'm confused. The wireless carriers I've talked to claim that you can't use a tablet SIM card in your smartphone, so that you can get a data only plan. But I've talked to some store representatives who say it can be done. And I've read online about people being able to this.