A SIM-only offer offers budget friendly fees for messages as well as vocal mins. Vodafone supplies global SIM cards that provide affordable fees. Orange SIM deals provide lowered prices providing the consumer pre-pays. The tele2 sim only internet handles deal versatile ‘enhancers’, infinite land line telephone calls. The network firm O2 promotes a ‘simplicity’ price, which appears like the SIM offers delivered through various other systems.