Currently Being ModeratedMar 24, 2013 1:52 AM (in response to Rizwan Yaqoob)
If "almost 1GB" is too much for you (this is the size of the complete iOS), you can also update "on the go" with your mobile device, this means only the changes (e.g. from 6.1.2 to 6.1.3 is about 16MB only).
From 6.1 to 6.1.3 is a little bit more than 16MB.
Currently Being ModeratedMar 24, 2013 3:06 AM (in response to Rizwan Yaqoob)
If you update iPhone 5 via iTunes, iTunes always downloads IPSW for the current version and then installs it on the iPhone. The firmware file is just above 1GB
When you Update using Settings>> General>>Software Update button, the download size is dependent on from where you start.
For example: Update download from iOS 6.1.2 to iOS 6.1.3 (Dot release) would be around 20 MB and from iOS 6 to 7 (Major release) could be around 900 MB.
Currently Being ModeratedMar 25, 2013 6:47 AM (in response to Rizwan Yaqoob)
Yesterday I updated my iPhone 5 from iOS 6.1 to 6.1.3 and after using my device it seems all issues are gone and feels like my phone is now more powerful. WiFi as well as Cellular signal reception is now just PERFECT. Battery lasts for 2 days even with heavy use (texting, calls, music, games, internet).
wOwww!! Thanks APPLE