Tell me, what does unlocked phone mean?

Hi ! I often hear about unlocked phones, but I’m not sure I understand what that means exactly. I’ve always had carrier provided phones that are probably locked, but I don’t know how an unlocked phone differs from those. Does this have implications for the use of SIM cards or the choice of operators? I would like to understand the pros and cons of having an unlocked phone versus a locked phone.

Hello Pillip. To put it simply, an unlocked phone is a device that is not restricted to a single mobile operator. This means you can insert a SIM card from any operator and the phone will work without a hitch. Locked phones, on the other hand, are restricted to use with a single operator until they are unlocked. Having an unlocked phone offers greater flexibility to change operator and use local SIM cards when traveling abroad, which can be more economical and convenient.