Only edge connection //rattling camera sound and image shaking

Hello. I have no Internet connection other than edge. Whenever I chose wdspa or lte the icon shows but no reception at all. I've even tried hard reset but to no avail. This started to happen a few days ago and I know it is the phone because if I insert the Sim in another phone it just works like a charm. I think it is a hardware issue. Also sometimes when launching the camera the screen starts shaking like mad and a rattling sound can be heard, this is not the normal sound of the camera, since it did it sometimes when booting the phone, it is crazy loud now.

Any help? The no 3g connection drives me crazy! Samsung just told me to bring it to a repair centre but wanted to ask you guys if it happened to any of you. Thanks a lot.