Complex sentence: The purpose of the company was on providing international roaming services to North Americans, both to undercut roaming rates for GSM subs and to provide services to CDMA subscribers; providing a more convenient and cost-effective solution than buying prepaid at destination.
Split into simpler sentences: The purpose of the company was on providing international roaming services to North Americans, both to undercut roaming rates for GSM subs and to provide services to CDMA subscribers. This would enable a more convenient and cost-effective solution for travelers than buying prepaid at destination.