Second,the iPhone can be used for multimedia management purposes,like storing your favorite music files which you can also play,as well as videos and pictures as the device has quite a memory,as it can even reach 64 GB of internal memory.The third way to use an iPhone is that of an internet and browser-based machine that you can use for surfing the internet,managing e-mails,socializing,and others,with the help of the implemented Wi-Fi technology that the good people at Apple thought of.
The iPhone can execute a huge number of applications,commonly known as iPhone Apps,Apple iPhone Apps or just Apps.These Apps can only be obtained by visiting the official Apple online store where Apple have stored over 20.000 applications(only Apple approved applications work on their device).These apps come in several domains such as gaming,social-networking,GPS systems and maps,and many others,as some famous brands or names are present as well,such as YouTube or Twitter.
The iPhone comes in four different generations,as every model brought something new and innovative for the serie,like the ability to perform 3G video calls in the case of the second installment,named iPhone 3G for that matter.The other two models are the iPhone 3GS and iPhone 4.The iPhone is a mobile phone that follows the known practice of the GSM subsidized phones,which require the user to first register it as a mobile phone before being able to use its other features,but apposing the GSM phones,the iPhone cannot be unlocked by code or serial number.
The first model of the iPhone came out in January and looked like something you cannot hack.A few months later,in July(July 3 to be more precise),a man named Jon Lech Johnson discovered a way to bypass this requirement by using some software programs and editing some iTunes binary data.He posted the way he did it on his blog so everybody could unlock their iPhones.The second installment of the iPhone serie,the iPhone 3G we spoke of earlier,turned out to be a tough nut to crack,as not only did it require registration as a mobile phone,but also presented in-store activation.This made its unlocking pretty much impossible.The iPhone also had a SIM Lock that registered the device to one particular carrier that the user would registered when buying the phone.
The hackers however succeeded in registering the phone from another network,as iPhones were originally registered to AT&T but only a quarter of the sold phones were actually registered to this company.Apple believes that the iPhones were shipped across the sea and were unlocked there.AT&T even started to sell iPhones without contracts but at double price as such phones made both them and Apple lose the differed income.
Other countries however have different policies as United Kingdom can buy 3G iPhones from iTunes for example,and others even sell unlocked phones as they do not have contact or relations with AT&T.After this,both iPhone 3G and iPhone 4 were unlocked shortly after their release date.After taking all these in consideration,the iPhone still remains the best-sold and the most successful mobile phone currently available.