I got a t mobile sim card or and i got a boost

Suggest use the Boost Mobile SIMM card in another Boost Mobile phone.

No, you'll have to have a new sim card sent to you. Just call boost, and let them know that you lost it, and they'll send you a new one... shouldn't take but 2 or 3 days. They might not even charge for it.

If you are trying to use your Blackberry 9700 Bold on Boost Mobile then it may not work, as the phone may not support the technology with which Boost Mobile runs on. You would only be able to use Blackberry 9700 Bold on GSM carriers once unlocked.

Unlock Blackberry Bold 9700
Unlock Blackberry Bold 9700

Yes it should if the LG mobile phone is unlocked. If not, when you insert the Boost SIM card in the LG it will ask for a Secutity Code.
If the SIM card won't work in the LG, please get back to me.

Your Sidekick operates on a GSM cellular network. Your Boost SIM card (and Boost Mobile phones) operate on an iDEN cellular system. You cannot use a Boost SIM card in a Sidekick. (FYI - SIM cards cannot be unlocked. Only cellphones phones can be unlocked.)

YOU CAN ONLY USE THE BOOST MOBILE SIM CARD IN BOOST MOBILE PHONES OR NEXTEL PHONES!!!!!!!!!!!

you can unlock it to use a boost mobile sim card by going here
http://multiplexelectronics.home.att.net/icunlock.html

T-mobile uses GSM technology, whereas Boost Mobile's technology is IDEN. There is no way a T-mobile sim card will work inside a Boost Motorola i855 phone or any Boost phones for that matter and, of course, vice versa.

you go to setting menu then security and change the sim setting . u r salected dual mode in ur handset .

I called Boost support about the same issue and I was told that that particular phone and any other Ic series phone by motorola will not work with Boost Mobile. There was also a few other phones that will not work. Try calling thier support line and requesting the list of phones that won't work. Good luck.