Should I upgrade my Galaxy S2 to ICS?

Samsung Galaxy S II with At&t .. I updated and don't care for it at all! I would prefer going back to the old system. Facebook and contacts are all out of whack......If anyone knows something i don't please inform me. Thanks

All the Facebook and Twitter integration was removed from the Contacts app, replaced with (LMMFAO) Google+ integration that you cannot do anything with - it basically just throws you into the Google+ app. Very unpolished experience. Social Hub no longer Syncs Facebook Contacts.

That's what you're seeing. They completely altered how the phone is used with this update. On the flip side, they were too damn lazy to update the stock Gallery from the GB app to the ICS version. What irony.

I'm waiting for the Lumia 920 to launch. Google and their OEM partners simply don't know how to maintain a top notch user experience on these Android devices. I got this phone over others (which I returned, and trust me it took a lot of arguing to get them to let me switch phones twice in my first 30 days) for the superior integration in the contacts app, only to have it ripped out a month after I was locked into the contract. It's fine, though. ETF will be on the way and it'll be on Craigslist at a bargin bin price.
 
I have the I9100 and the upgrade to ICS was disappointing and a little bug riddled. A friend has the same phone but uses a different carrier and had major issues with crashing and lock ups. I can tell you that depending on what your carrier has done to the rom you could have different results to performance so if you love what gingerbread can offer you stay put and wait for the Jelly Bean upgrade which should be here by the end of the year.

The one thing I will say is that by rooting my phone and and my friends phone and choosing CM10 both our phones now run amazingly with the same performance without crazy carrier specific issues. Jelly Bean in nightly form kicks so much ass and highlights what my phone should be able to do without TW nonsense weighing it down. I can honestly say until I see the GSIV / GS4 or the successor to the One X I'm in no rush to change this awesome phone.

For the sake of half a day or less setting up rooting, back up and installation of the rom of your choice of which there are many plus I got rid of a lot of data I wasn't using due to installation of apps or simply not installing them again because I didn't use them so much my phone runs so slick its like using alien technology.

Rooting and custom roms literally will make you happy to have a GSII and show you what android should be like on such an amazing phone. I know the exynos chip on the I9100 is world's apart from the variants but go to xda forum's and other users thoughts on the sprint performance before diving in.

I'll never stay carrier disabled again and now I choose phones based on the build and speed as the software can be my choice.

Google luck whatever you do in the end.
 
I had serious issues with the update for my GS2 from T-mobile. The main problem is that there are two different phones carrying the name and T-mobile sent people the i9 rom instead of the sgh, making my touch buttons work funky and my volume buttons didnt work at all. That plus the battery drain made the experience horrible, plus i feel like the rom is glitchy in general. B.T.W. its no simple thing to go back to gingerbread on the sgh, took me the better part of a day to track down odin software and the correct gingerbread from T-mobile(i dont like to void my warranty)