Unfortunately; i Phones aren’t that simple and we no longer live in the good old days.The smartphone age has brought with it advancements in mobile security, particularly from manufacturers like Apple who are keen on maintaining a tight grip on the ecosystem.R SIM and other hardware unlocking solutions, only support specific i OS and basebadn versions.So, upgrading your i OS version, will relock your i Phone (Unless you use an upgraded R SIM).It might be a bit more expensive than the R SIM (Which I am not aware of its price), but it is a good investement! But every now and again, the world offers you an opportunity to feel like you got the lucky ticket for two on an all-expenses paid vacation to Disneyland.
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Users can also download and install i OS 10.0.2 through i Tunes on a Mac or Windows PC.
That’s the first thought you might have when a notification appears on your i Phone or i Pad prompting you to download a "Carrier Settings Update." If you’re like me, you’ll shrug and tap the Update button (YOLO! But others might be a little more wary, and want to know what the update is for and whether it’s safe to download before taking any action.
The best way to unlock your i Phone permanently is with the Official IMEI method.
You will be able to upgrade your i OS version and keep your device unlocked forever.It’s not within Apple’s interests to restrict which network your phone can access, but when such technology is so closely tied to the phone’s firmware, unlocking your phone becomes quite difficult.