Update #2 (03/28/16): iOS 9.3 is available again for the iPhone 4s. The new the build number is 13E237.
The Wi-Fi Assist feature found in iOS 9 is not supported by the iPhone 4s. The Wi-Fi Assist slider is located in the Cellular section of the Settings app, but it does not appear on iPhone 4s devices. While the iPhone 4s does support iOS 9 not all its features will be available due to the older hardware of the device.
Apple has officially released iOS 8.1.1. The update includes bug fixes and performance improvements for older hardware. This is good news for iPhone 4s and iPad 2 owners who were concerned about a previous Ars Technica report that said iOS 8 ran slower on these devices. iOS 8.1.1 also patches the recently released Pangu jailbreak and should be avoided if you plan to keep your device jailbroken.
At the time of this post Apple is still signing iOS 8.1. Meaning this is your last chance to upgrade to 8.1 if you want to jailbreak at the last iOS release possible. It is unknown when Apple will stop signing iOS 8.1, so upgrade now while you still can. You can learn how to jailbreak your device using Pangu on Mac OS X here or Windows here.
Gazelle is offering an additional $10 to new customers who trade-in their older iPhones before October 4, 2013. This is the perfect opportunity to sell your iPhone 4, 4s or 5 before its value decreases. Currently you can get up to $300 for a working iPhone 5, and up to $120 for a broken model. That's enough money to payoff your carrier's early termination fees, or even upgrade to a new model. Of course this all depends on the current length of your contract, what model iPhone you want to sell, and the condition of the device.
You can take advantage of this deal by visiting Gazelle's Become a Gazellionaire Sweepstakes page. Just click the "Start Selling" button at the bottom of the post to get started, and Gazelle will give you a quote for your iPhone after you answer a few quick questions about your device. You will also be entered into a sweepstakes to win $1 million if you decide to go ahead with the transaction.
Apple could be shaking up the entire iPhone lineup with the release of the iPhone 5S and iPhone 5C. A leaked screenshot from Canadian carrier Telus reveals that the mobile provider is planning to discontinue the 32GB and 64GB models of the iPhone 5 on September 28. That's only a few days after the rumored launch of next-generation iPhone and new low-cost iPhone. The 16GB iPhone 5 model will most likely replace the iPhone 4S as the $99 model in Apple's new lineup. While this is nothing new, it is the rumored iPhone 5C that is really throwing a wrench into Apple's future iPhone pricing plans.
In a typical Apple iPhone cycle, the iPhone 4S would normally slip into the Free slot of the upcoming lineup, but the iPhone 5C could be slated to take its place. If the rumors are true, this means we will be losing the iPhone 4 and 4S, instead of just the oldest model, and Apple could be planning to announce an all iPhone 5-branded lineup on September 10.