I've only had my phone a week, and it's the first time I've had one like this. So I know I'm totally new to this and it's a completely ridiculous question. Feel free to point and laugh.
I had a problem where I lost standard connection a few days ago, but wifi was fine so I used that. It came back quite quickly but I'm not sure quite what I did. It went again yesterday and I had no signal, and couldn't use the phone to make calls either. It just had the red circle at the top. It went at work and was still off when I got home, so it can't have been just a lack of signal. Now I don’t even have the red circle.
I've tried pressing various buttons, I've downloaded an upgrade from the Samsung site and I've even done a factory reset, but it still won't connect to the network although I can make calls again. The wifi still works so I used that to download stuff again.
I'd be really grateful for any help. I don't actually understand most of it, so can you tell me how to get to wherever I need to go!