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depends who you ask i guess but apple says in the release notes its should not be used on your primary device so take it for what its worth, or do what you want the choice is yours
 
Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.0.2 Mobile/9A5259f Safari/6533.18.5)

I'm not a iOS developer by any means but I think as long as you read up, be prepared to mess with iTunes, and downloading beta after beta, you will be fine. Also, don't expect all apps to work as they did in 4.x, also one odd crash I get is engadget crashing when you try to view the comments. This is on the app tho, and not the actual website
 
I find the iOS5 Beta 3 to be reasonably stable on an iPhone 4. However there are quite a few bugs and many apps will not work.
On my iPad (original) it is terrible. Safari has been rendered essentially unusable.

If you install the Beta, be prepared to fill out and submit bug reports. Also do yourself a favor and save your blobs so you can rollback.
 
Hi,


No offense but the op obviously is not a dev.

Leave it to the boys in the know and wait with excitement for the polished global released version of the ios5 !

How arrogant? Anyone can join the developer program in return for giving a few £'s to Apple if they want to upgrade early or get a sneak preview.

For me beta 3 has been considerably less stable than beta 2. Obviously not the experience others have reported in this post so maybe I've just got the ****** end of the stick this time.
 
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