I need help! I have a question!!!stolen phone.

OK
So my phone got stolen and i had a fido phone with the fido SIM in it.
Heres the sitaution. I also have 2 other SIM cards. One that is activated(and i don't know the number to it) but hasnt been used in over 2 years or maybe even 4, and one that isnt activated and is brand new.

OK!
SO now my friend is offering me a LG SHINE for free because he owes me from a favour the LG shine is unlocked and what not. NOW. my question is this.
Can i put the new SIM card into the LG shine and unlock the FIDO SIM CARD somehow?...if so...how?.
Can i put the OLD SIM CARD into the LG SHINE and possibly find out the number?
Is there a way that i can get back my old number, because i still have minutes on it. (pre paid service)

i hope u guys can answer these questions im very sad at this time.

The old SIM card you have is most likely no longer usable. The new SIM card must be activated with your current account. Call Fido 1-888-481-FIDO (3436) to do so. You will keep your current plan and number and continue to pay the same bill. Your stolen phone's SIM card will become unusable. Hope this helps.

K.

If your phone gets stolen fido can block the usage ... now if you want to protect your contacts get the mobile backup option.. and you can use the unlocked phone with your sim card however some features may not be compatible