Welcome aboard the Communtiy!
You have a 15 days Satisfaction Guarantee period with Fido during which you can return your phone and exchange (1 time). To be eligible for a refund, you must return purchased equipment in "like new" condition, including all original parts, components and packaging. In addition, you must remove all device passwords and account locks, where applicable.
That said, past the 15 days, it is not possible to return the phone.
Is there any particular thing you don't like about the phone?