DUOS users can alternate between two different phone numbers for maximum flexibility including calling and texting vs. mobile data use – and choose the most advantageous pricing plans for each. You’re always juggling work and personal life but now you can use just one phone. Simply switch from one line to the other number you’ve dedicated for personal calls and messages or to freely surf the web – keep your private life private. When you travel you’ll be glad for the convenience of having a double SIM handset. Instead of purchasing a new SIM card to replace the original SIM, simply switch to the other line.