[General Topics] BarryH_GEG:
I came from a i9100. I sold it before the i9300 came out so I could get more for it. I got a One X but planned on selling it once the SGS3 was released. I used a S4 SGS3 in Japan for two days and decided to keep the One X. There are 162 pages of debate on the SGS3 forum discussing both phones.

http://xdaforums.com/showthread.php?t=1652250

Here's why I kept the One X vs. getting a SGS3 as posted in that thread.

http://xdaforums.com/showpost.php?p=27663514&postcount=1525

Keep in mind that the first 2/3's of that comparison thread was written before the SGS3 came out when people were comparing a utopian vision vs. the One X which had been out for a few months. Things have changed because the SGS3 has its share of issues. Most center on the display (defects, dimness), available RAM (the S-Crap reserves a large amount of memory), battery drain (wakelock issues), fragility (the edge-to-edge glass panel breaks easily), and QC (bezels cracked, hyperglaze defects, and the physical home button being recessed instead of raised).

At least to me, the One X's most outstanding feature is its display. I wasn't impressed with the SGS3's; especailly side-by-side. Displaymate is a professional display testing and evaluation company. They wrote up a review of the SGS3's display. It's not too flattering.

http://www.displaymate.com/OLED_Galaxy_S123_ShootOut_1.htm

The One X was rushed to market by HTC, probably to get there ahead of Samsung and the SGS3. There were build issues, s/w and driver bugs, and some h/w problems. The launch didn't go exceptionally well. Some issues still exist but the chatter's died down considerably so you can assume things have improved as more phones have been built.

If you look at the way the One X is put together, the "phone" is a single unit and slides in to the single-piece polycarbonate body. Tolerances are pretty tight and probably difficult to achieve in mass assembly. The biggest issue is a Wi-Fi fault created when the connectors on the body aren't correctly aligned with the antennas on the shell during assembly. The connectors use dynamic tension so compressing the back of the phone can also affect Wi-Fi performance. Based on a rough tally, 200-400 owners on the forum are affected against a total of about 5K. The "fix" put in place by HTC are spacers to keep the back from being compressed. Where the connectors are isn't an area likely to be compressed (unless someone intentionally compresses it) and the fix is more of a safeguard. The design itself hasn't been changed and the majority of phones aren't affected. I'm sure HTC's adjusted the assembly process either through better training or new methods of getting the phone body in to the shell. HTC phones have their build month identified in their serial number. The "3" in XX23 means March and so on. I have a early-build HT23 and it's been pretty much flawless in every way so not all early-build phones had problems. A poll that was run with 1K people voting where the question was asked “is your One X perfect?”, 70% said yes. As in anything mass produced, later versions tend to have better tolerances through tuning of the build process over time.

There's been a leak of a pretty substantial update to the One X that's due out soon. It moves the phone to 4.0.4, improves battery life, performance and benchmarks, enhances the browser, and addresses a lot of little issues that bugged people. Read that thread and it'll give you an idea of what to expect.

Keep in mind that if you intend to root your phone you'll be completely giving up your warranty on the One X where Samsung's still pretty liberal. More people need to take that in to consideration before they buy the One X.

Overall, I'm happy and there's no phone out there right now I'd rather have. Friends I've recommended the phone to are happy also. Good luck with your decision.