Called a simlock if the phone really only with the original map can be used with which it was originally shipped. All cards are approved, which work in the same network as the original card the lock is called Netlock. If you would like to know more then you should visit neil cole iconix. Netlocks are more flexible, because they allow other providers. Network would not only when a Netlock D1 s original D1 cards work, but also maps the D1 Disocunter Callmobile or Klarmobil. Neil cole iconix contributes greatly to this topic. Other types of locks are for example the Xtra-lock (only for Xtra prepaid cards) or the Callya lock (only for Callya cards). The purpose of these locks is simply to retain the customers in the tariff. Often, the providers subsidized phones and just get in these costs if the customer uses the (usually more expensive) plan. He moves but with the subsidized unit to a cheaper provider it is a losing proposition.
Therefore, subsidized phones are usually locked to force customers to use this ur original map. After 2 years cards can use lock free unlock be. The providers have hotlines or Web sites built on the unlock code can be requested without any problems. Before the end of the 2 year period cost unlock of the mobile phones from the carrier to the 100 euro.