I just got this DNA and when my phone shows 4g with 2-3 bars data doesn't work or if it does its like using dial-up.Now when I have 4g with 4-5 bars its blazing fast,works like it should.But when I have 3g data works fine,it only doesn't work when my signal is 4g with 2-3 bars which is most of the time. Anyone else having this trouble or someone know how to fix this,please help.