Hi, I've had my phone for 3 weeks and it has been working perfectly, but yesterday my 4G connection has been cosign me a lot of problem. Yesterday it kept turning on and off but this morning it's simply not working.

I can use my phone no problem for texting and calling people. but everything that has to do with internet pops out this message ""You need a network connection to use this application. Please turn on cellular data or Wi-Fi in Settings" even when my phone is showing a full bar connectivity.

Please help me out, thanks