Um yeah. I live just two blocks out side of where the Clear map shows we have 4g where i live. if I go out on my balcony and just turn the 4g on and leave 3g antenna on too it will not ever connect to 4g. If I then turn off the 3g antenna my phone will connect with no "bars" to 4g and it will test a speeds of around 1mb. Even in areas where it shows we have good signal I have to shut off the 3g to get it to connect.