Unlocked Cell Phone
If you want use separate cell plans or services (in other words, if you want use different SIM-cards), you should find unlocked cell phone. It’s all because many companies are locking cell phones so you can’t use it with another company - quietly smart, isn’t it? That’s why unlocked cellular phones is so popular for now. Especially it’s about unlocked iPhone and unlocked iPhone 3G - Apple is locking their phones so you can’t use another SIM-card and even can’t use it in different country. So the best way to be “free” from companies providing cellular connection is to find and buy unlocked cell phone.
And, some companies have their’s own models of cell phones and locking they - just because of popularity. So, and if I want any model made for one company and I’m using another and like it - I have to find unlocked phone (this model I want). So, if you searching to unlocked cell phone or how to unlock your’s - look around and maybe you’re the Lucky 