According to the earlier reports, Samsung Galaxy S4 could feature a HD 4.99 inch Amoled screen which could allow pixel density of up to 440 PPI. Even though, this density is really sharp and attractive, But it's a lot similar to the densities of new Sony and HTC phones. So, Samsung in order to make Samsung Galaxy S4's display different from its rivals is working upon higher pixel densities. According to a report, Samsung is experiment upon hexagonal and diamond shaped pixels. Which in result provide them with their target of achieving pixel density greater than 440 PPI.
However, this enlargement of pixels is made possible by Laser induced thermal imaging which allows a place for sub-pixels; this technique is cheap, but, found some problems initially. Now, the issues are resolved and green signal has been given to this technique. So, Samsung would be first one to apply it and we have to wait and see how it works when Galaxy S4 emerges into the market.
Looks like the Galaxy S IV was received 40% higher than the Galaxy S III did when it first came out in UK. Phones4U shared this information based on the number of customers who had their names listed to get hold of this much-talked about phone. An executive of the mobile retailer further said that the Galaxy S 4 has received the "most number of pre-registrations of any other smartphone" that were introduced this year. He even added that it could even be the best-selling smartphone this year.
Just recently, Samsung announced that its former flagship phone has already reached 50 million sales since it has been formally introduced in March last year. Prior to S 4's launch, Samsung announced that it aims to sell 100 million units of the Galaxy S IV and they are possibly on the way to doing so. If they could sustain this kind of interest in the S 4, then it's highly likely that they'll achieve this goal. Galaxy S IV units will ship on April and already, people have lined up to be the first to get the device.