I searched the Internet for a solution and all the solutions tells me that i have to contact the previous network service provider, until i decided to build my own solution and share it on my blog. some people happen to think that the device is requesting for the device unlock code so they enter the code 10 time and end up facing the ''slot has been permanently locked''. mostly when you buy a cellphone from another country, when you take it to another country and try to use a different network on the device it will give you 10 attempts to enter the network unlock code. This problem is caused by entering the network unlock code incorrect for 10 time. I took the phone and tried to get a better solution to share with other people since i noticed no one has a reasonable solution to this problem. They all did not come to a solution, one device was sold to me buy a guy who needed quick cash and he explained to me that it has the ''slot has been permanently locked''. I used to hear about this problem from other technicians from other cellphone repair shops. The ''slot has been permanently locked'' problem is a very common problem faced by most people owning Vodafone or Alcatel devices. Solution to ''slot has been permanently locked'' on all mtk Alcatel and Vodafone devices