For most people, a SIM card from SMARTY will offer much better value than a SIM card from Superdrug Mobile. For instance, SMARTY offers 30GB of data for £10/month (versus 5GB on Superdrug Mobile). Alternatively, you can get 50GB of data for £15/month (versus just 15GB on Superdrug). Both Superdrug and SMARTY use coverage from Three, with Superdrug’s service actually being powered by SMARTY’s technology platform in the background.