for the past few years worldlingo have been providing translations services to mobile phone and handheld device/pda companies enabling them to provide real-time translations for customers of sms texts, e-mails and websites.

Make this proper case.
For the past few years WorldLingo have been providing Translations services to Mobile Phone and handheld device/PDA companies enabling them to provide real-time translations for customers of SMS texts, e-mails and websites.