I was just thinking. By default the phone wants to keep the backlight lit when it's on AC. Is that really smart? Isn't it more likely to conk out prematurely that way, or too much of a worry wart?
I just press the power button, hold, and it stays off, and yes the light source is likely to fail sooner in my view although I have been told that thermal shock from being switched on and off is more likely to make it fail. The only time I like it to stay on is when used as a navigation system at night.
Did anyone notice that during the call, the screen isn't actually turned off, the backlight is still on, it just shows blank screen. You can see this if you are in a dark ambient because of the backlight bleed on the screen.
So, while you are talking, you will lose battery charge on call and on screen backlight. I don't think it is an economical way of spending battery juice.
So actually the screen is on the whole time during the call, you just can't see it because there is nothing showing on the screen...
Or is this just my device?
X10 2.1 nordic.
I noticed that, anyway during a call, it obviously drains the battery even though the screen switched off & the use of the Proximity sensor is to switch off the screen during a call to prevent the screen from touching than the economizing the battery
I noticed a big improvement of the battery with the 2.1 Update.
I've noticed it too, I think this would waste more battery? or is it the opposite?
Of course it uses more battery power. I can't rememeber if the same situation is in 1.6. Can anyone check?
It does use current, but i think its a minor amount. The reason why they leave it active but black for example, is that if you need to quickly access the dial pad you can do that, without waiting for a second or two for the screen to power on.
I recall back on 1.6 at times it felt like eternity that it would take to bring up the dial pad during calls. I'm not sure but check to see if the screen does in fact turn off completely after a certain duration, since that would be ok.
Nope, it doesn't turn off and I wouldn't say it's a minor amount of power, because the screen is one of the most power hungry components in our phones. So if you are in a call for say 30 mins just think how much battery that would suck out. And for me, for no good reason, when I'm on the phone I don't need the screen, that is why the proximity sensor exists, to turn the screen on and off
I understand, but you have to understand how the lcd works. Producing colours or tints cause the device to use more power. The brighter the colour the more power. Since white is the brightest tint or colour, whichever you prefer, black being the opposite would use the least amount of power for the screen being on. Unless this is a type of lcd matrix that uses most power with black I read about that before somewhere. But I highly doubt SE would do that. But considering its a concern of yours there might be an dialer app that negates this hmm.
At the Sony Ericssons products Blog there was a video about the new features at 2.1
It tells also that you could press the Power-Button to turn off the light during calls.
I´ve not testet this yet, maybe of you could test this. ;-)
kindred7 said:
It does use current, but i think its a minor amount. The reason why they leave it active but black for example, is that if you need to quickly access the dial pad you can do that, without waiting for a second or two for the screen to power on.
I recall back on 1.6 at times it felt like eternity that it would take to bring up the dial pad during calls. I'm not sure but check to see if the screen does in fact turn off completely after a certain duration, since that would be ok.
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It does not take a second or 2 for the screen to come back on. Just test it yourself by pressing the power button, it comes on within 1 second. On a side note, in the 1.6 days the screen would stay on completely and if you press the power button it hangs up. That was a terrible implementation.
outie said:
It does not take a second or 2 for the screen to come back on. Just test it yourself by pressing the power button, it comes on within 1 second. On a side note, in the 1.6 days the screen would stay on completely and if you press the power button it hangs up. That was a terrible implementation.
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Im on 2.1, cant check it anymore. It was rather sluggish for me on 1.6. The difference may be that I had pictures for all my contacts. I like it just fine.
Yes, you can turn the screen completely off by pressing power button, I've just tried. I don't understand why do I have to do it with my finger when I have proximity sensor that works just fine when it wakes up the screen from complete power off when I move it from my face. Seems like a bug to me.
LCD screen consumes the same amount of power no matter what image it is showing, black or white, so as far as I'm concerned showing black screen during a call does absolutely nothing for me, especially not for my battery. This is so trivial that I can't believe they missed it. Or maybe some SE engineer thought X10 has AMOLED screen so it doesn't consume power when it's displaying black...
Personally, I prefer the screen turn off compared to the screen lock in 1.6 as I had a hard time unlocking the screen lock when you need to use the dial pad when on the phone.
So when you are on the phone, the screen turns off and when you move your phone away from the ear, the screen turns on.
Sent from my X10i using XDA App
dpishta said:
Yes, you can turn the screen completely off by pressing power button, I've just tried. I don't understand why do I have to do it with my finger when I have proximity sensor that works just fine when it wakes up the screen from complete power off when I move it from my face. Seems like a bug to me.
LCD screen consumes the same amount of power no matter what image it is showing, black or white, so as far as I'm concerned showing black screen during a call does absolutely nothing for me, especially not for my battery. This is so trivial that I can't believe they missed it. Or maybe some SE engineer thought X10 has AMOLED screen so it doesn't consume power when it's displaying black...
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You are 100% correct, my mistake, lcds do use the same amount of power due to the backlight. I was just on the phone for 50 minutes and my battery went down by 5%, so i think its not bad at all. I was even on wcdma/gsm.
Drop SE an email to inquire on it maybe?
Well, maybe I'm exaggerating, but this kind of screen backlight beahaviour just isn't logical to me. You say you lost 5% on 50 min call? Hmm, that really seems low...
Where can I send inquiry to SE?
i have the same problem guys.....any solution yet?
working on a more accurate solution atm.
I've had my T-Mobile HTC One for about two weeks now. Maybe 4-5 days ago it started to auto-dim the screen very quickly (after only a few seconds) and then a few seconds later it shuts it off, and I have to unlock it. This has gotten highly annoying. Under the display settings I have auto brightness off, and the auto sleep turned off as well (currently set to 15 seconds). Is this a software issues, or possibly faulty sensors?
I also have a couple other minor gripes with the hardware, namely the sleep/wake button is slightly depressed on the right side meaning it takes more effort if I push it on that side. I can push the left side no problem. This makes me nervous as I'm afraid this button may get stuck and it's the only way to turn the screen on/off since this phone lacks a "home" button like the GS3/4. I'm thinking more and more that I may need to just get a replacement, but I don't want a refurb. Any input would be appreciated.
Has anyone else had issues with their back light faulting? I've searched and have seen that other sprint evo lte users have had issues with screen flickering, but my problem seems to be more serious that that. when i wake up in the morning the screen is blank. thank god i have a custrom rom installed and can manually mess with the status bar slider to get the backlight to turn back on. It just needs to be tweaked here and there. the backlight seems to only like to work on full brightness, if not, it will flicker like crazy. if i press with more pressure on certain parts of the screen the backlight turns off completely until i remove my finger. I dont think its a proximity issue since it'll just flicker sitting on a desk. Do I need to replace the screen? is this worth it? i havent dropped to phone or anything for this to default. I can upload a video later. gonna use my OG evo for that which is still kicken by the way
I realize this thread is incredibly old, but did you ever find a solution to the flickering problem? I just started seeing the exact same behavior, including the screen going dark when putting pressure on certain areas of the screen.
Thanks!
I have a PJ75100 doing this, but the screen does not function at all. I get the orange/green light while charging, and if I power it on it acts as if it's doing it's regular startup, but nothing shows on screen.
I did update the stock firmware with the latest release ruu, but still no screen.
I'd really like to get this one going as it's not the normal Jewel, it's the white and silver one, and my girlfriend wants it to replace her iPhone 5c.
Sent from my EVO using XDA Forums Pro.
So I figured I would post this up just in case people are going crazy about turning on their display, and then having it turn right back off on them lol. There are sensors at the top of the device by the ear speaker. When turning on the device make sure your fingers remain clear of those sensors for 1 second, if those sensors do not pick up light source by being blocked off (try it, press the power button while covering the sensors), the display will turn back off. Same thing goes for Knock on, the display wont even turn on at all. Keep your fingers clear of those sensors!
I dont think this is a design flaw I think LG inadvertently did this to keep from the device from turning on in your pocket by accidentally hitting power on knocking on while in your pocket. it might also attribute to poor knock on feature in low light areas or night time.
Walter21026 said:
So I figured I would post this up just in case people are going crazy about turning on their display, and then having it turn right back off on them lol. There are sensors at the top of the device by the ear speaker. When turning on the device make sure your fingers remain clear of those sensors for 1 second, if those sensors do not pick up light source by being blocked off (try it, press the power button while covering the sensors), the display will turn back off. Same thing goes for Knock on, the display wont even turn on at all. Keep your fingers clear of those sensors!
I dont think this is a design flaw I think LG inadvertently did this to keep from the device from turning on in your pocket by accidentally hitting power on knocking on while in your pocket. it might also attribute to poor knock on feature in low light areas or night time.
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There's also a bug which emulates the same symptoms,while the sensor is not blocked. Changing the screen-off effect to different effect, is a work around for those caught with the issue.
timsterzzz said:
There's also a bug which emulates the same symptoms,while the sensor is not blocked. Changing the screen-off effect to different effect, is a work around for those caught with the issue.
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Its interesting that LG went with this sensor design. This sensor thing is kinda weird seeing as people will no doubt block this sensor and trigger this effect without even realizing what they are doing, making people think their device is broken. LOL im sure this is talked about in the instruction guide but who the heck reads those things now?