If I put my boost mobile sim in my new unlocked phone can i keep my service with boost and my number?

Try a sim card from a carrier that is not for the phone. If your carrier is boost mobile then use a Verizon or sprint sim card, even a new sim card will not work if it is the carrier locked to the phone. It must be a non carrier sim card.

the sim card is still tied to the previous service provider
get a new sim card from your new service provider
keep the plastic card that the sim card is attached to as there is the PUK code that you will need to open the phone stamped on that plastic card

Just put your boost sim card mobile phone to your blackberry phones. Normally if your already unlocked your blackberry using blackberry bold 9700 unlock code, your phone can accept any of sim card from different network provider. As long as you have correct blackberry unlock code it should be no problem. Make sure your sim card have same network frequency with your blackberry suport frequency specification. Don't put cdma on gsm and vice versa, it will not work.

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

When you place a new or a existing SIM card from another phone provider into your mobile phone and it asks for a Security Code then :-
This phone is locked to the original mobile phone provider. You need to contact this mobile provider to ask for the unlock code (Security Code) for this phone. You need to provide proof of ownership etc and the phone's unique IMEI number which is located inside the phone under the battery. They use this number to generate the unlock code for your phone.
They should provide you with instructions on how to enter this code into the phone.
Once you unlock the phone, then you can insert a new SIM card in this phone or sign up with another phone provider using this phone.
You could ring the phone provider and ask for the unlock Security Code because you are going overseas and wish to use your phone with a prepaid SIM card from another country. This maybe a free service.
The other way to get your phone unlock is to use a phone unlocking company on the Internet, they usually charge a couple of Dollars for their services. Use Google and search for "Security unlocking code” companies in your area.
You can also try this WEB site :-
http://www.mobileunlockguide.com/mobile-phone/
The IMEI number is unique the each mobile phone.
The number is printed on the label under the battery.
You can also get the IMEI number by entering this on your phone
*#06# It will then display your IMEI number and you may also get a unique global serial number. Your IMEI number should be 15 digits

When you place a new or SIM card from another phone provider from the original phone contract then it asks for a Security code.
Your phone is locked to this mobile phone provider. You need to contact this mobile provider to ask for the unlock code (security code) for your phone. You need to provide proof of ownership etc and the phone's unique IMEI number which is located inside the phone under the battery. They use this number to generate the unlock code for your phone.
They should provide you with instructions on how to enter this code into the phone.
Once you unlock the phone, then you can insert a new SIM card in the phone.

will not work with boost mobile, (even if it is unlocked) you might be able to use it with boost mobile cdma, which uses sprint service. they no longer advertise this service, but still accept new users. give boost a call and ask them for the boost mobile cdma number

>>>>Expert
>>>>Motorola Phones
>>>>Boost Mobile

I activate phones for Boost Mobile.

I'm sorry to tell you, but an ic902 can never be unlocked to work properly on any other system - to include the Boost system. Here's why. The ic902 is a hybrid phone. That is, it uses two different cellular systems to operate. Specifically, voice calls on the ic902 are placed over the Sprint CDMA network and Push-to-Talk (PTT) calls are transmitted over Nextel's iDEN network.

Boost Mobile calling (both, voice and PTT) uses the iDEN network from Nextel. Thus, the ic902's radio transmitter (which is CDMA) cannot make calls on the Boost ( iDEN ) system.

Moreover, if you plan to use Boost Mobile, I STRONGLY suggest that you NOT purchase a Nextel phone and have it unlocked to use for Boost.

Although Nextel and Boost phones seem the same - they are not. If you look at the model number of Nextel phones most of them end in a zero. (ie., i850, i870 etc.) where Boost Mobile Phones end with the number five. (ie., i855, i875, etc.) This is because the transmitters in the phones are set to different frequencies for different purposes (like for texting.)

If you go to eBay for example, those who sell unlocked Nextel phones to use for Boost (if they're honest) will inform potential buyers in their eBay listings that their unlocked Nextel phone will not (text, for example) on the Boost network. These unlocked Nextel phones will have limitations when used on Boost.

To prevent problems down the road, ALWAYS purchase a Boost phone to use on the Boost network.

If this information has been helpful, please give me a big thumbs up when you rate my answer.

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.

Only if the blackberry is unlocked from the origional carrier. Sounds like your phone is still locked. Contact the carrier and if you are in decent standing with the company, they will provide a sim unlock for the device.