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Google released Android 4.2.2 couple days ago and if you want to get Android 4.2.2 on your Galaxy S3, you can now by installing the latest LiquidSmooth ROM v2.1 RC1, which comes with full Android 4.2.2, UI customizations, and a ton more.
Android 4.2.2 adds a ton of stability and speed over previous versions so you can expect faster performance while getting better battery life.
I’ve tested a bunch of other Android 4.2.2 ROMs over the last couple days but I would have to say LiquidSmooth Team has got the best Android 4.2.2 ROM at the moment, at the time of writing this post. (It may change of course but LiquidSmooth has always been one of my top AOSP ROMs regardless.) Best of all, LiquidSmooth ROM is available for ALL variants of Galaxy S3 including AT&T, Sprint, T-Mobile, Verizon, GT-i9300, GT-i9305, MetroPCS, and even US Cellular. For Canadian users, just use AT&T or T-Mobile version that matches the first 6 letters of the model number. E.g. You can use T-Mobile if you have SGH-T999V since it matches T-Mobile’s model number SGH-T999. Okay, maybe not ALL variants, but for most major carrier out there… (no support for Korean GS3 sorry!)
Android 4.2.2 is simply amazing and if you haven’t tried it yet on your Galaxy S3, load up your ClockworkMod Recovery today and try it out this weekend. Do let me know what you think, I don’t believe it’s just me, Android 4.2.2 has gotten way better.
Also, you can now get Google Wallet working on any Galaxy S3, see full tutorial on that here.
To install, reboot into recovery, do data wipe/factory reset (if you are not coming from an AOSP Jelly Bean ROM), install ROM, wipe cache, and reboot.
If you are missing Play Store, reboot into recovery and install Gapps.
Credits – XDA <--- Please donate to the developer of this ROM if you like it, thanks! Bugs: Korean font is broken, so if you need to read Korean, don't install this ROM! Q&A Q: Google Now is not working! A: Just update Google Search app on Play Store for fix.