Can I recover contacts from a lost boost mobile phone?

Are you talking about Android and protection? I recommend you to use an applock to protect your phone against snoopers and thieves, you can try it.
LEO Privacy Applock Boost Hide Android Apps on Google Play

Hi Chad if you're putting your sim card into a different cell phone make sure the samsung isn't locked to another service provider

SIM numbers can be recovered but contacts that are save in phone memory cannot be recovered!
remove covering of your mobile phone and place your mobile on direct sunlight (without battery) once its dry if on then ok if not same problem then try spirit (thinner) and clean the whole mobile circuit with thinner using toothbrush !
please rate and comment if this solution works!
@saad abdeen

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I deleted all of my contacts by mistake,can you help me get them back?

You should check that is there any backup in the OTA or Nokia PC companion, and check the sim card or SD card in the phone, because the phone wille make a copy for contacts in the sim card or sd card.if you want to recover them know more here: sim card data recovery

9706485622 way2sms passward lost

dont worry, you an follow this htc data recovery guide that helped me before
http://www.asoftech.com/articles/htc-photo-video-recovery.html

may be the phone might be reset to default which wil delete all the phone memory 
if u hav saved the contacts in memory card r sim u can recover them if not nothing can be done