It's a knock-off, see here:
If you need a good laugh you should browse around their site. Some of these fakes a...
What you're seeing is normal for ICS. The reason it does that is because it is rendering the page into an array of images - this is called a backing store. It is much easier to scale and transform an image than it is to redraw the page for every f...
That is probably the digitizer grid for the capacitive touch sensing. It is normal and all phones (apart from a few that have in-cell touch) have it.
How did you disable the tmob bloat?
Settings>Apps, then swipe sideways to "All", then scroll through the list. When you find something you don't want, tap it and then tap "Disable". Tap "OK" when the "app may misbehave" pops up, and then repeat...
The phone in the pictures is the HTC E1 (603e) which is a lower mid-range Chinese market phone: