iPhone
The first iPhone was unveiled by Steve Jobs back in January 2007 and it changed the entire smartphone industry as a whole. Here is everything you need to know about the iPhone.

Note: 16GB iPhone 2G models can’t be downgraded to iOS 1.0. If you have a 4GB or 8GB iPhone 2G, check the serial number: If the third digit is a 7, and the fourth and fifth digits are less than or equal to 48, then the device can be downgraded to iOS 1.0. If your device can’t be downgraded to iOS 1.0, you can still downgrade to as low as iOS 1.1.4- which you can follow in this tutorial here.

1) Go to https://ipsw.me/
a) Select iPhone
b) Scroll down and select iPhone 2G
c) Select any version of iOS 3 you want to restore to.
d) Click download.
a) Select iPhone
b) Scroll down and select iPhone 2G
c) Select any version of iOS 3 you want to restore to.
d) Click download.

iPhone 2G's require a SIM card in order to activate the iPhone upon a factory reset. While it may seem easy to find a mini-SIM or use a SIM card adapter, there is actually easier and cheaper ways to bypass this through the use of third-party software. There are several applications that can activate your iPhone 2G, which is explained below.

The first iPhone was unveiled by Steve Jobs back in January 2007 and it changed the entire smartphone industry as a whole. 2017 was the 10th anniversary of the iPhone, so now seems like the best time to go ahead and buy a piece of Apple history. But before you do so, here are a few things I have learned about, and that you should consider first.