The many capabilities of the iPhone keep being discovered each day thanks to the many jailbreaking softwares available on the market. Apple Company has itself discovered how useful this is and has since enabled their devices to perform this but only for the phones using iOS4.3 and higher without having to jailbreak. For previous versions of iOS, it is necessary to jailbreak iPhone WiFi hotspot.
There are very many types of applications that can do the task but their functioning is much different depending on the developers. When installed the applications load and act just as any other network management applications. It creates an interface that you can toggle between connect and disconnect. You are also the one that gives access to any device attempting to connect to the internet connection being provided by your phone.
The softwares are available on many online stores for downloading. Some of the applications are given out as free trials with an expiry period and later after someone is content that it works then buys it online. Others are for monthly subscriptions and if the user fails to pay in time then risks the software being deactivated.
Security must be provided to avoid people you do not want accessing your internet connectivity. This is done by setting up a WEP key and then giving it only to people you choose. The best thing about this is the portability of the phone compared to other Wi-Fi routers. It can be used anywhere since it runs on battery power unlike other routers which must always be plugged to a power source.
The jailbreak iPhone WiFi hotspot can provide internet connection for up to 5 devices. It works well with other devices from Apple like iPods, iPads and laptops as well. The data charges are applied as usual by the network provider and are all dependent on what you use the internet for.