V400 Outer LCD On...When Phone Is Off

[iampetem]

So I signed up with Cingular almost 2 weeks ago and got a nice V400 for $30. I was pleased, however this week its been very, very fickle about charging - as in the cord has to be plugged in extremely precisely to charge all the way. I've heard that this is happened to a few of my friends so I'm not too worried, as long as it charges. My main problem or query is that I'll turn the phone off at night and in the morning even before I attempt to turn it on but the outer LCD is on, not displaying anything, just the blue glow. The best part is that the phone is completely frozen, I need to take out the battery and everything. This has happened only in the last few days, but it has happened three times which is enough to make me consider bringing this one back for a replacement. I'm not familiar with the specifics of cell phone technology, but could it be interfering with my cordless phone and wireless router, and wireless laptop that are located in the same room? Any help would be greatly appreciated, thanks alot.