WiFi hardware compatibility issues in

iPhone 4s with iOS7 software

Prepared By:

Bhumika Gohel

WiFi

lWi-Fi is the name of a popular wireless networking technology

lthat uses radio waves to provide wireless high-speed Internet

land network connections. A common misconception is that the

lterm Wi-Fi is short for "wireless fidelity," however this is not the

lcase. Wi-Fi is simply a trademarked term meaning

lIEEE 802.11x.

The iPhone 4s

The iPhone 4s uses a Broadcom BCM4329 WiFi and Bluetooth

controller

the same chip likely used in the iPhone 4. The BCM4329 is a

popular choice for mobile applications

where it may be in use in hundreds of millions of popular mobile

devices — processor analysis firm Chipworks estimates that the

chip was found in more than 50 million devices in the fourth

quarter of 2010 alone.

iOS7

liOS 7 gets a complete design overhaul and adds useful

features like automatic updates to make everyday use

easier. Long-overdue Control Center gives quick access

to most-used features. AirDrop and iTunes Radio are

excellent additions.

lWhile there are a few notable new features in iOS 7, the

new interface is by far the most deeply felt and most

profoundly changed of the batch.

Disadvantage of iOS7

lBesides the massively overhauled design and Control

lCenter,there are few ground-breaking new features

l.

l

The flat design concept favors space over information so

you'll generally need to do more scrolling to get the info

you need.

Some new features aren't available for iPhone4 and 4S

users.

Issue in iPhone 4s with iOS7

A number of iPhone 4S owners their Wifi problems to mentioning that

they encountered the grayed out Wi-Fi button or “unable to connect”

message many times after they upgraded the iPhone 4S to iOS7.

If this occurs, the Wifi option in the iPhone 4S is unavailable, so when

4S owners tap the Settings > Wi-Fi, trying to turn on the Wi-Fi, the

iPhone 4S fails to respond. According to some reports, the annoying Wi-

Fi problem for the iPhone 4S may be caused by the iOS 7.

solutions to fix the iPhone 4S Wi-Fi

connection problem below.

Troubleshooting 1: Turn off the airplane mode by tapping Settings > Airplane

Mode, then do the network resetting by tapping Setting >

General > Reset > Reset Network Settings, and finally restart

the iPhone 4S.

Cont..

Troubleshooting 2: You also can try this Wifi solution for iPhone 4S: Setting >

General > Reset > Reset All Settings.

Note: This troubleshooting may fix the Wifi problem, but it will

remove all of your preferences

solution

iOS 7 needs a powerful processor—the "brains" of the device

responsible for carrying out what the software commands.

Apple designed the operating system for its most powerful chip

to date, the 64-bit A7, which includes both a CPU and an

upgraded graphic processor. The OS simply won't work on chips

that predate the A4, the earlier and weaker chip powering the

iPhone 4.

Cont..

It also doesn't help that the iPhones 4 and 4S—the earliest

devices eligible for this software update—have half the onboard

memory, or RAM, of the newest iPhones.

RAM holds recent data for easy access, so the more you have,

the more data you can access quickly, and the faster the

experience feels. The iPhone 5S and 5C boast 1GB RAM. The 4

and 4S each have a mere 512MB.

Reference

http://appleinsider.com/articles/13/10/10/ios-

7-update-brings-more-wi-fi-issues-for-some-

iphone-4s-owners

http://www.etradesupply.com/blog/how-to-solve-

iphone-4s-wifi-issues-on-ios7

Any Question??

Thank You