[Sony Xperia X Performance Guides, News, & Discussi] RockStar2005:
turbo,

No I don't think it's that b/c why don't other phones do the same thing? After talking to another xda friend, I think it MAY be an issue with Quick Charge 3.0, and even 2.0. He said once he went back to using regular chargers and not QC ones, the issue stopped. I'm testing this out for myself too since last night. I figure if the issue doesn't occur by this weekend, then that's prob it. Perhaps Sony will issue an update to fix it? But who knows? lol I just wonder if the constant restarting will damage the phone over time? I dunno. I mean, I don't plan to keep it beyond 1 1/2 - 2 years anyway.

I mean, "necessary" and "preferred" are 2 different terms. I wouldn't say it was really "necessary" to use an external DAC/amp on my Z3, but did I notice a difference? Yes! And I prefer better sound quality, prob more than the average person does (since the majority of ppl don't care all that much, unfortunately). So for me it makes sense to use one. Again I don't know if I'd notice a difference in quality b/t the XP and the Z3 or M9. Maybe? But I know I had a $600 amp/DAC (double what my Oppo cost me, though now it's only $399 on Amazon) and I couldn't hear a diff b/t those 2 either, so I returned that and kept the Oppo. I liked the premium sleakness and overall looks of the Oppo more too. The $600 Chord Mojo is pretty popular too among audioheads, but I'd talked to someone on Head-Fi who told me he compared it to the Oppo HA-2 and that he couldn't hear a difference either. So sounds like the $300-level devices are a real sweet spot as my Sony Walkman A17 cost that much and it was better sounding than my Z3 alone. But yeah, their use is debatable. For ppl who don't want to carry a second device around, the new AudioQuest DragonFly Black v1.5 is very well-loved (though I wish it worked with Poweramp) and so portable you could almost mistake it as part of the cable lol, as is the upgrade version, the Red v1.5. Some of the user reviews for the Red claim it's better than my HA-2, but I'm sure many would disagree too.

There's a huge difference though b/c centralizing your business & pulling out of certain regions. Sony Mobile can think and say whatever, but I know the truth.......... they already have name recognition here (unlike HTC etc which aren't AS popular or well-known), so the fact that they're running away from the US (and other regions) to me is a really SAD joke. They're losing their nerve, and it sux b/c their Xperia phones are fantastic. The fact that I had to buy this phone NOT through a carrier was total BS. If they were even HALF as aggressive as Samsung has been here....... man........it would be a different ballgame. These other big dogs are using Sony's camera sensor.........that right there says something about who's who and what's what IMO. I agree on quality going down, at least with respect to the battery. 2700 mAh?? lol F being slim. The XP's battery should've been no less than 3000 mAh. They advertise a 2-day battery life on these phones, but I don't feel the XP is like that. My Z3 was though. The Wi-Fi on my XP DOES take a few moments more than my Z3 did to start up and connect to a router, so I agree there on that. So that's an 820 thing? Ok.

Yeah it's a stepdown for battery and Wi-Fi, but I mean dude, I care more about screen and camera anyway. The battery is not AS good, but esp if u enable Stamina Mode, it's still pretty close to Z3-level. And where my Z3 would rarely lag, the XP doesn't seem to ever at all from my experience.

Yeah my battery seems to have improved too. Someone on here advised me to leave it on SM overnight and that would help it, and it did seem too. At least the projected time on the battery screen seems to have gone up from before. A few weeks ago I'd have 31.xx hours with SM off & 71.xx with it on at 100%. Now at 100% I get 34.xx hours with SM off and 108.xx with it on. I'd call that improvement! lol (Though those times are usually off anyway, but still, it makes me feel a bit more confident. lol)