The IMEI unlock is always the best option is costly in many places. Depending on the brand manufacturer, you can use overlay sim interposer to unlock both jailbroken or non-jailbroken iPhones. However, this exploit does not provide permanent unlock solution. This means the phone will lose its unlock status once the interposer is removed or the iPhone firmware is upgraded to a version unsupported by the interposer hardware.
The good news is that the iPhone warrant remains valid as long as it is not jailbroken. Those that choose to unlock their iPhones using this method do so because these chips come cheap and are available almost everywhere. 20 dollars in most retail and online stores. It is a miniature chip(s) embedded within a thin plastic circuit board which usually mimics the shape of a sim card.
It is attached beneath the new sim card and together, they are placed onto the iPhone sim tray. Once inside the iPhone, the interposer sits between the card and card reader. This hardware now becomes the go-between the carrier sim and iPhone card reader and basically tells the iPhone how to read network signals!
The chip hoodwinks the handset into thinking it is unlocked and thus permitting voice and data signals to take place. There is quite a handful of this on the market today and new models and versions are released regularly. Depending on iPhone model and IOS firmware, you should purchase an interposer that best suits your unlock requirements.
You must research and visit a host of their websites and portals before forking out your cash. Or, you can go through the info illustrated below in order to make informed choices. For example, you should go for an interposer that supports GSM, CDMA and other popular cellular related features.
A few of them ship without support for 3G and 4G connectivity and messaging capabilities and may require jailbreaking and installation of third-party patches. Whereas you can ignore interposer limitations by installing an old one in an iPhone running higher IOS firmware version that is recommended, it is always wise to stick to IOS guidelines printed on the package.
This way you avoid missing out on features and you will proceed stress-free. In case you want to maintain one sim card interposer for a longer period, you may want to shop for the upgradable interposer and its reader. RGKNSE makes R-Sim mini which can be upgraded even at home, using a dongle updater. You simply download and upgrade its firmware to the latest one everytime newer patches are available, or when you have upgraded to the latest firmware.
What is your preferred sim card interposer, There are no strict procedures to be followed because it all depends on iPhone and R-Sim model. But overall, the steps are almost the same. You will be guided on what to tap and as long as you know the carrier network where you purchased the iPhone, you should accomplish the procedure easily. You can always try again and again until you get it right. The interposer setting menu should automatically pop up and let you configure it. Sim Applications to get started.
To configure, tap Carrier select or similar title. From the menu that pops up, select the carrier to which the iPhone is locked. If not listed manually enter the IMSI code. To do this, tap input IMSI to continue. Next select your iPhone model. Select carrier mode from the list that pops up.
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