In addition to that, i checked and saw that my current contract was valid until April, 2018, but i have not renewed it, yet. Do I have to cancel the contract and then take a new package with a phone?
Beste antwoord door Folkert
Don't cancel your current contract as you will lose your current phone number!
Instead, login to your "Mijn T-Mobile" and choose "Verlengen met toestel" which means renew with a new phone. As your current contract was valid until April 2018 it means you can renew at any moment.