As the title says, any suggestions?
As the title says, any suggestions?
If your Sharp FX displays "invalid sim" message on screen it is locked to network.You need to unlock it to use other network sim card in it.To unlock use unlock code.Before getting code you need to find which country,network it is locked now and IMEI number also.Then get unlock code from the site Theunlockarena.com and unlock from service provider lock easily.Emergency calls message occurs if your phone won't receive signal properly.So switch off the phone and switch on it once.