I changed my phone number through self service, but it didn't recommend me a list of numbers possible to change to and told me to write the number I wanted to change to. Does this mean I can change to any number I want?
Make sure that it doesn't say "Option 2 - I want to move a number" above the box you are looking at. This option is for porting a number from another provider, and will immediately change your number to this, even if it is currently being used by someone else.
You want to follow the instructions under option 1:
Select a province and city for your new mobile number.
Select the area code and first three digits from the dropdown, then enter your own last four digits, or **** if you have no preference.
Click search. Available numbers which match the criteria you have selected will now appear in the box under step 3.