Default n9005 mobile network not good?

I just found my mobile network on my n9005 not very good. At home where signal is not very good, my note 3 often has gprs network while my old s3 has H network. And at one station where signal is poor, my note 3 has no signal at all while my s3 can manage to have gprs or edge network. Both phones are on the same tarrif of same carrier (giffgaff.) I am not sure its just me?