Congrats. But you didn't take my advice about too many animations and loading times, it crashed my browser again...if others get the same experience they can't back you.
Also it's for a particular niche phone only? I think it will be quite hard. So you've got 4 backers in the first 24 hours?
Yes probably best to open it for the major phone types, even splitting up your pledges into phone types with limited numbers would help alot, plus being about to buy in multiples not just singles.
There's many ideas you could do...who is helping to promote you as the first 24 hours are the most important for publicity and 4 backers isn't alot ;(