IPhone 4 GOES DARK RANDOMLY FOR NO PARTICULAR REASON PLEASE HELP

Question

I'm gonna try this. Because I'm super frustrated. Something scary is happening to my device, I got an unlocked iPhone 4 from the Beverly Center in Los Angeles 3 weeks ago. I'm now on a long business trip in Moscow Russia and all of a sudden my screen statics, a sound of plug being pulled resonates from my iPhone there is some colored lines that slowly engulf the screen and then it goes dim, dark background on the screen but there is a slight light making it all look like the phone didn't shut off, it just bugged out and is now (I guess) just dark. This all happens in a matter of a second.
Then I hold the master restart and get it back working, sometimes after a few tries, because sometimes five master resets still don't bring it back to life, the white Apple over the dark background appears but then the phone is off again without ever coming back on.
Sometimes it happens when I browse FB or I'm on Linkedin, but first it started happening after taking a picture with the Camera (After like using the Camera for almost 3 weeks prior). Every time I took a picture this happened. Then it moved to other programs, like I would turn on the music and same thing would happen, just goes dark-dim. Now its mainly happening while using applications, mainly FB, the ABBYY Card Reader (Camera) and even Virtuoso Piano. Also sometimes when I charge the phone through a plug it always does that the second I plug the cable into the phone. Same thing if I use the USB and connect it to my MacBook Pro (2008) it gives me a box saying "Couldnt connect to the IPhone 4. An involid response was recieved from the device" or something like that. After 5-10 tries it plug in and the iTunes syncs it and it works fine. I mean *** is going on, I couldnt buy and factory unlocked iPhone from the US for 6 months, and when I finally was back in the US and had the chance to do it, this CRAP happens I FEEL FRUSTRATED AND DEPRESSED ISNT THE IPHONE 4 SUPPOSE TO BE the toughest and most reliable phone ever to hit the planet? Why is this crap happening to me while I'm away?
PLUS THEIR SALES REP AT BEVERLY CENTER SHAWN MCDANIEL LIED TO ME by TELLING ME THAT THE APPLECARE+ (Which I purchased for an extra 100) will take care of even 2 trade in if (PRECICELY CRAP LIKE THIS) something happens to it. THATS PRETTY MUCH WHAT HE SAID, and then when I told him that I'll be in Moscow, OH SURE THEY HAVE A REPRESENTATIVE AND APPLECARE+ IS WORLDWIDE.
So then I call Apple Care, both the specialist and the supervisor sound like kids who were given a superjob. They don't sound like intelligent techy people and soon I understand why. Long story short, I got no clarify wether there is an official Russian Apple representative or not, I wasn't offered mail-in repair, I was only told that looks like the nearest Apple store to me is in Poland or London so I should have someone fly there (that means I won't be with my contact book for at least a week or two) or go there myself (thx I just got an $800 phone and I should get another 300-500 EURO ticket to London just to make the iPhone purchase complete) ***.
(For those who enjoyed reading so far read below, if this information is enough for you to help clue me in I'd appreciate it, if you want to read more interesting stuff read below).
Wait I can't make the story short I have to tell you - so the first lady sounds like a 16 year blond from the heart of Hollywood, and she tells me to do a backup, doesnt tell me how I should transfer my contacts that I had transferred into my phone from my old Samsung galaxy, xfer them into my MacBook at which they've never been. We did a full restore after saving a backup (hoping that my contacts would stay in tact) , then we found out the restore didnt fix it, as I went and took a picture this thing happened. Then I said the heck with it I need my old backup with the apps and my contacts, so I initiated that backup and then the contacts didnt xfer in, and I was shocked, literally, 1500+ contacts destroyed by Apple. So then she passed me on to her supervisor who was the one who didnt tell me anything substantial except simple troubleshooting procedures. He told me to go into a Russian iPhone Reseller and it will be at their full discretion wether they would exchange my phone for a new one or not comply to AppleCare since apperantly it doesnt work with them and nearest apple stores are in London or Poland. So whatever, I then afrer finishing my exactly (Skype call)
11/5/11 4:52 AM Call Ended 3 hours 12 minutes 39 seconds, I, saddened, saw that in my iTunes backups I have two more backs from an earlier time, so I backed up to one of those and it xfer everything the contacts and apps! It was just enough time for me to download ExcelContact and e-mail my contacts to my gmail before this thing started happening again. My phone works now, but this thing happens now every few hours randomly and I'm outraged.
Please if anyone experienced such a problem and could help me fix this, please help me.
Thx
P.S. I used the phone fine with ATT for a week in US when I bought it, then I used it fine for 2 more weeks here in Moscow with MTS GSM. I dunno wether my phone is CDMA or GSM? =.="

Answer 1

Thanks for the the information Tyler. I'm still in awe, I heard that if an LCD is over heating or the phone is over heating, there would be a warning message telling me that the device is over heating, not sure how true is this?
Nah I never dropped it yet, its too fresh and precious to me but the funny thing is no matter what care I took since the three weeks that I've had it, it still developed this problem.