Can you use a Cricket SIM card for a Samsung SGH-A687
I have a Samsung SGH-A687 that is locked into AT&T and I don't use the phone anymore. I have a friend that want to trade a phone with me but they still want to use the number they have on there sim card. The thing is that phone is from Cricket which is a company that is owned by AT&T. Can that SIM card from Cricket be used for the phone Samsung SGH-A687 from AT&T without this phone being unlocked since Cricket and AT&T are basically the same company. I want to know cuz I really don't to unlock the Samsung SGH-A687 phone cuz it cost 49.95 plus tax. So if I can get an answer it would help so much and be very appreciated.