Compared to the S2 the signal on the S4 is really bad in poor signal areas. I have my S2 and S4 side-by-side (both on the same carrier), both have wi-fi and mobile data on, the S2 has full bars while the S4 varies between 0 and 1 bars. Occasionally the S4 loses signal altogether and I have to reset the network settings. Switching off wi-fi and data helps improves things slightly but this is still pretty disappointing. This is just in poor signal areas (i.e. inside my house), outside the signal is fine. Has anyone else come across the same problem, or is it just me?