Chosen Solution
I recently rescued my old Sony Ericsson F305. It works perfectly while is holding its old and huge SIM card I want to use it just for “disconnecting” and receive calls in my new SIM card Problem is…. when I switch it on with the new SIM card, it gives me an error in the SIM, it tells me to contact my SIM card provider and doesn’t let me do anything else (I think I can add 8 digits, I guess as a call or code) When switch it on without any SIM card, it asks for a card and doesn’t let me do anything else So…. i wonder if there is any way of bringing this little phone back to being use, is perfect for basic things that i need, and it definitely works, is just a matter of configuration I guess Thanks for your support!
take it to you provider. they would have to enable the phone nad sim card through their network. you cant always simply swap SIM cards to other phones
