Recently I have had issues with my phone signal, I have had a new sim to see if that was the issue but no matter what SIM card it’s still the same fault, when I have 4 bars, nothing will load.. then it will go to 2 bars and everything works super fast like it should. Also when I receive a call it will sometimes switch to 3G. I’ve tried every possible fix that I can find. Please help!
It could be a phone fault, and could be either the antennae or the algorithm on the phone, I would contact the manufacturer of the phone and see if they can advise..
Also try the help here Guide: How can I sort out my network issues?