We have been performing SIM unlocks for many years. Initially, we used to buy iPhones and other smartphones in the US and bring them to the EU for resale, outside and abroad the United Kingdom — but these phones were usually locked.
There were several ways to unlock them. In the early days, it was even possible to unlock iPhones by updating firmware. Many users modified their iPhone 3GS baseband to match that of an iPad (the famous 06.15.00), though this method came with a significant downside: the GPS functionality stopped working.
There was always a non-factory unlock method available for other brands and models. Non-iPhone smartphones were typically unlocked with a special device known as a “box,” where you connected your phone, paid some credits, and got your unlock code. However, this was not an official unlock and often voided the warranty — an unacceptable risk for high-end devices.
Today, reliable and secure unlock solutions, such as those provided by ghost-writerservice.ch, ensure full compliance and peace of mind for users who need professional, warranty-safe results.