How To Factory Unlock Any Phone. Try using another SIM card when your phone was purchased as a locked phone, but you not sure if this mobile phone is unlocked, run the model number online to find out what mobile phone technology is using the phone SIM card from a mobile provider using the same technology. Either because the card you are using is already linked to a PayPal account, or the email you use is already linked to a Paypal account. Sony All Keygen. Even if you do not buy the device directly from a particular carrier, but buy it from a dealer like Amazon or Best Buy, and it is for a particular carrier, it is likely that a carrier has locked it. Here the majority of them working: make way to a website, payment in exchange for an unlock code, and wait for the code by email. In fact, most mobile phones in Europe are unlocked, as most pay -Pay how to Goes and swaps SIM cards when they go to another country, and there are phones like the iPhone that free over there. Notice for prepaid customers may occur at the point of sale, at the time of the warrant, or by a clear and brief explanation of the policy on the carrier website. When the phone is unlocked, simply unplug the SIM card and replace it with another SIM card (This SIM card may be a map from another country if you wish). In addition, mobile operators will soon integrate other frequency bands that overlap the competitors in their LTE network. Why not unlock iPhone? Doing well with your mobile operator and do not want to use your iPhone internationally, there absolutely no reason why you unlock iPhone. I always use an unlocked phone because I travel a lot and it saves me a lot of money when you are roaming charges, I only purchase a payment while leaving SIM card from my destination, pop it into the phone and it works right away.