TIPS: What to expect upgrading SGS2 to ICS using Kies


Android Enthusiast
Thought it might be worth sharing this, because I could not find something similar when I searched.

I have SGS2 running 2.3.6 GB, and wanted to upgrade to IceCreamSandwich, but here is what I wanted to check, and the results.

Firstly it's not immediately obvious that it's ICS firmware. I don't use Kies very much, in fact the only reason I do since late last year is to hang out for this this update instead of having to root the phone. The ICS just popped up as PDA:LP8 and I verified else on this forum it was 4.0.3

Backup your phone if you don't already. I know Kies is not the best backup option but better than nothing.

In my case I was unsure if I would loose any data - so I backed up every on both the internal (~11.5GB) and my external 32GB SD micro card.

I backed up by connecting through the phone USB utilities meaning 2 disk drives appeared in my case I:, J:. Did not connect via MTP application ie. just plugging the phone it & it appears in Windows as 'i1900 phone, card'. The reason for this as disk drives I ran the windows disk checking tool on both drives to make sure there was no corruption, just like you would in windows with C: drive. Minor corrupt files can prevent back up running.

With Everything saved, I hit the firmware update & waiting while it did it's thing for about 1 hour incl a couple of reboots on the phone.

After the upgrade - have to restart the phone for Kies to recognise it again and load the usb drivers.

All went well - no data was lost, all the sd card data remained as is including the countless application folders that are created. Everything worked as expected - most apps have already been updated to work in 4.x There were only one or 2 that went off to Play to find updates.

Lessons learnt?

The only thing I would have done differently is screen captured (Home+Power key) all my home screens + apps draw (layout). After the upgrade you get the carriers default crapware, all your widgets need setting up again, and all folders on the home screens AND apps draw are gone - meaning the apps are spread throughout. ie. folders are gone but not the apps.

To set up all my widgets again, I am going off memory instead it would be nice to have a back up stored set of screen images that I look at - minor issue perhaps it's time to clean up anyway.

I will leave the reviews of ICS to later, but there is a 40 slide pdf summarised the change below. I have found 3G network speeds are a little better, so is battery life besides the UI improvements.

(bullets don't seem to stick?)


Android Enthusiast
thanks man. useful post.
have u had problems after the upgrade??
i was going to upgrade to ICS today, but luckily saw in this forum that there are lots of problems yet to be solved. so GB stays for few more days till some good news arrives.


Android Enthusiast
Thread starter
I haven't had any of the problems listed by others. I think it's worth the update. The battery life has improved - although some of the problem with batt life on GB were carrier applications running in the background. Google must have put a stop to these. visually not much different - but slicker under the hood.


I upgraded on my Bell Mobility device. A few issues I noticed:
I now have trouble getting a stable BT connection to 1 of my devices (only 1 though. I have 5 that I randomly use)

I have several contacts that share a phone number. Eg, If Joe, Nancy and George all work at the same office but have their own extensions, If I call or receive a call from any of them, it always shows up as Nancy regardless of alphabetical or any other priority that I can determine.

The Phone icon is slightly different and the apps can now be shown in grid view or list view

Battery life ... not sure really. I loaded it up with apps before analyzing this. Seems to be similar to GB or perhaps slightly less.

I have found ICS to be satisfyingly stable and quick. Fairly solid in general. The only F/C issue I have seen in 2 weeks is related to my 1 BT device that is haunting me.
Rooting was super easy and I now get quadrant scores consistantly above 4100 when I used to have trouble breaking 3000

Would I recommend? Sure why not. If you want to... go for it. If you are content with GB... you wont be missing out on a lot