I'm happy that this phone worked out for me. I needed a basic phone since my Nokia flip phone battery died and fell apart. This phone has big buttons, and comes with a charging dock. I had ZERO problems using it as soon as I inserted the SIM card, it was automatically ready to go. It's GSM. Calls come in and go out no problem. I don't know why other reviews said they did. It has a few other features such as a light, and key lock switch but not much else thankfully I just need something to make and receive calls and it worked out perfectly. If you need a BASIC phone this is it! If you need something fancier with other features, go somewhere else. People DO need basic phones without the complaints. There's plenty of fancy phones out there. Others need this option. Thank you. 5/5 stars.