Actually, there's another fix for that.

As you may or may not know, lots of devices experience those kinds problems (PS3, Xbox, graphics cards, etc).

The problem are the solder joints under the chip, and by pushing down you fix the contact. However the right solution is using this:


A hot air reflow station. By reheating the chip, the solder joints will connect again and the problem is solved. The problem however is that it takes some practice or you either fry or blow away components.

If you have someone who has experience with that, you may get it fixed that way, too. Look for people who repair PS3s and Xbox', they can also fix your phone.

(Yes, I have this problem, too, however I don't know whether a reflash would fix it as my battery is drained and I can't get it to turn on)