How to unlock iPhone 4
Though iPhone 4 is way old now and people are advancing towards iPhone 5, study shows that iPhone 4 is the most used device among other Apple products. So many iPhone 4 users are looking to unlock their devices on unofficial carriers or in short, they need to ‘factory unlock‘ their iPhone 4. There are two types of iPhone. One is factory unlocked and the other is contract-based.
Factory unlocked iPhone comes with all unlocked capabilities. You can put any sim card inside it and take it anywhere in the world without any hassle. Contrary to that, a contract-based iPhone is the one which is locked to a carrier you subscribed to. Let me explain. If you visit Apple’s website and go to its buying iPhone section, you will see that At&t and other networks are offering iPhone 4 for $0 with contract. If you buy that, you will only be able to use At&t’s sim card inside it. If you switch sim card, it won’t show service and thus you iPhone won’t get service if you ever decide to move from America.
If you have a contract-based iPhone 4 and you want to use an unofficial sim card inside it, you will need to unlock iPhone 4. There are many ways to unlock your iPhone 4.
How to unlock iPhone 4
1. Using ultrasn0w (Not recommended)
If your iPhone 4 has baseband 1.59.00 (Baseband can be found by going to Settings >> General >> About >> Modem firmware) then you can unlock iPhone 4 by installing ultrasn0w from cydia. You will need to jailbreak your iPhone first.
2. Gevey Sim (Not recommended)
Gevey sim is an interposer, basically a small transistor, which can unlock iPhone 4 by placing it beneath the sim card. Gevey sim cost $20+ and is not recommended to unlock iPhone 4 because most users face difficulties while unlocking their iPhone.
3. Official IMEI unlock (Highly recommended)
IMEI unlocking is a process which can unlock iPhone 4 on any network, any firmware or any baseband. There is no experience or work required to unlock iPhone 4. All the work is done for you and you get your iPhone unlocked FOREVER. You can use our partner IMEI unlocking service to unlock iPhone 4. It is the only official unlock which is done through initializing your phone’s IMEI number into Apple’s database. The above two methods are unofficial and are not recommended.Our unlocking partners now do iPhone unlocks for cheap and it starts from US$9.99 for an AT&T iPhone to be unlocked.
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Gevey SIM is an interposer made by ApplenBerry which is used to unlock iPhone