Wait...not offered at all? Are you sure?
Serbia is as close as it gets to digital end of the world, but Google Play works as app store. Books and music on the other hand and also bunch of paid applications too, not so much.

Yep, not offered at all. I haven't seen it here in China and when I looked online it's not offered at all. If I want apps, I have to go with a 3rd party appstore or sideload.

Is your phone rooted? If so, I have solution for you ;)

Strictly speaking, it's something that can be installed, it's just questionable if I could buy anything and I'd be in violation of the ToS. Personally, I've just been too lazy to do so

You need to enable that option in the Settings menu. Then your phone will install any .apk you copy onto it. No need for root.

I don't know what version of Android you're running so I can't tell you exactly where to look in the Settings menu, but it's in there unless Android's been really, seriously modified.

When you see the Avadon running on an Android tablet, you'll understand why it refuses to run on phones. Its graphics are so small that it would be pretty much unplayable on phones.

Thanks a lot, I will try that one.

If I use FlashTool via Windows I can install APKs, it's really weird. It's like I have that option unchecked about 3rd party applications (I have unknown apps checked and debugging) but I can't find if there's any 3rd party option at all.

Also, apparently Windows update told me of an update about the ADB drivers on my phone so I'm going to try rooting it again after it, it could have been the reason it didn't work but I suspect it's the firmware.

Oh and yes, my phone has Google Play of course.

While that application certainly seems what I want and it's very small it doesn sport a visible ad and I don't really like ads at all. Do you know if there's a pro or donated version?

There is only a tiny ad bar across the bottom of the screen, I have never accidentally tapped it, it just doesn't get in the way whatsoever. I don't believe that there is a paid for version of it. There are a few other installers available on the market though. Reason I pointed to that one was literally because I have used it myself and it has worked perfect 100% of the time for me.

I think GooglePlay (store) is available only for verified Android devices. A friend of mine ordered a very cheapo no-name Android tablet from some Asian online store, and it can't get anything from the official Android store. I got some error with it when I tried to go to the app market.

I googled for it before, and there's a list of all the verified Android devices that can connect to GooglePlay. I guess one of the reasons it wants to recognize your Android device it is so that GooglePlay will not display items for you that wouldn't work on your device anyway.

But I guess all Android-devices that they sell in normal shops, at least in the Western world, are verified & supported devices. I actually installed the Cyanogen Mod for our ZTE Blade, but for some reason the Huawei phone wasn't supported by CM, at least like a half a year ago. So, just reminding that not nearly all Android devices are supported by CM, unfortunately.

Actually, now I remember I reverted back the official firmware/Android version to the ZTE Blade later, because I couldn't figure out some of the settings for it to make the it connect to the operator network (it was not sim-locked, but it was missing some file or configuration which I'd have to get from my operator). Since even the Linux/Android-expert at my work couldn't help me there, I reverted back to official ZTE Blade Android just to be able to make damn calls with the device once again. :)

I know way around that too. My old Tattoo was, besides the fact it was displayed as Verizon Mobile instead of mt:s also displayed as Desire S on Play Store. just edit build.prop and et voila. :)

Oh, it works, no issues. Just a qirk of mine, I don't like ads plus I've read reviews they drain battery and resources which both is very limited.

I'm sorry you had to go through so much trouble. The Cyanogen mod site explicitly states that Nirth's Sony Xperia is supported and the walkthrough provided is tailored for that phone, so the telecommunications gods have to be particularly vengeful for this not to work.

I found a root solution that worked for me: http://talk.sonymobile.com/thread/35239

I also managed to flash the firmware to 4.0 so now I have ICS even though it's not officially supported yet.

Time to play with root apps and uninstall facebook!