I have a LG-E400b and I'm having problems connecting to wi-fi. I have a Koodo Pre Paid and I recently renewed my base plan. I can't make any phone calls or send any texts. I can see the wi-fi networks in my area but they all have the signal symbol overlapped by a lock, and I don't know the passwords. I didn't have this problem when I activated my phone. I've tried removing and replacing the battery and sim card and when that didn't work I went for a factory reset, and still have no bars. Anyone have any ideas?