How can I upgrade iPhone 4S to iOS8 with insufficient capacity?

Method One, delete the data on the mobile phone, make room to

1. If you don't need much space, we can delete some useless apps or photo videos or something.

2. Delete method in the Apple phone "settings" application, as shown in the picture

3. Open the "universal" option in fact

4. Here there will be a "dosage" button to click on it to enter.

5. Here we click on "Storage Space"-"Manage storage space" option, click it.

6. Next you can see to occupy the size of the application rankings, the front is the most occupied space. Based on your own actual situation to choose from, I'm here to remove a larger game application as an example, as shown in the figure

7. After you find the application you want to delete, click the "Remove Application" button.

8. Finally, click on the "Remove Program" button, you can successfully delete, free storage space.

If you do not want to remove the application or the data commonly used trouble can be directly using the computer +itunes to upgrade, so it is very fast oh, they automatically delete the data on the phone OH.