"Inactive Sim" means that your phone is locked to a particular Network.To solve this problem,you need to get it unlocked your phone. You can unlock your Sony Ericsson W580i mobile using unlock code. Unlock code is the best way to unlock phone. You can get the unlock code for your phone from your Network service provider or any third party online vendors like http://www.unlock-zone.com/sony-ericsson-w580i/rs5wp9/ here you need to specify your country, Network name to which it is locked, IMEI number of your phone. Then they deliver unlock code to you through mail with instructions. using this instructions you can unlock your phone easily.
sahana, October 2013
