My Samsung Tab A 2019 has no LED lights - Samsung Galaxy Tab A series Questions & Answers

Hello.
Actually I am very satisfied with my device. The only thing I don't understand is why the two LED lights never do anything.... I can't find any options in the settings about it. Does it not have this function or where can I find it?
Thanks in advance.

Wymbah said:
Hello.
Actually I am very satisfied with my device. The only thing I don't understand is why the two LED lights never do anything.... I can't find any options in the settings about it. Does it not have this function or where can I find it?
Thanks in advance.
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Click to collapse
What LED lights? I have a Tab A 2019 SM-T510 and there aren't any LEDs. And I can't imagine why it would need any.

I mean those 2 points on the top. On mobile phones they indicate with blinking leds when you for example received a message, or when its battery is empty... For what are they then???

On the front there is the selfie camera and a light detector. No LEDs.
On the back thre is the other camera and flash.

If there are actually leda, these are leds not used by software and of course, hardware is useless unless they have software to use it.

Related

LED

Could someone please advise whether the HD has different LEDs for Wi-Fi and Bluetooth? I can only see the red LED for charging at the top.
I would like to see blue LEd when Bleutooth is on and Green when WiFi is On, just like on previous HTC models
Thank you,
Unfortunately, there are no other LEDs for BT and Wlan. If you turn that on, it is not signaled by an Led.
Thank you!
lamajstro said:
Unfortunately, there are no other LEDs for BT and Wlan. If you turn that on, it is not signaled by an Led.
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Many thanks for the confirmation....!
There is also no flashing green LED showing that the Phone is on as there was in the other HTC devices. I miss it because I could find my phone in a dark room.
maybe someone can create settings for it? a little program? especially for the status of the phone being on... would be nice!
tyronne1126 said:
maybe someone can create settings for it? a little program? especially for the status of the phone being on... would be nice!
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I think it might be possible. I remember reading something a long time ago that someone disabled the flashing green light on another HTC device so maybe it can be switched on too.
You're right
Matterhorn said:
There is also no flashing green LED showing that the Phone is on as there was in the other HTC devices. I miss it because I could find my phone in a dark room.
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LOL...I listen to music using A2DP and the LE light was crucial for me. I used phoneAlarm to try to activate each individual lED to ascertain, to no avail!
I see no point in removing all sort of LEDs; even using the virtual button; I would like to see the green and red lights for the telephone-related buttons when pressed to start and terminate a call. Haptic feedback is not always the best solution.
I guess the battery was so underpowered for the device that HTC opted to remove all lights/LED.
anyone that sees this.. can i make a request and ask if a program can be made or some sort of settings added to the phone to have the led flash to let you know the phone is on? or any other clever things you can come up with. !
thankss

2nd status LED?

Does anyone know what the deal is with the 2nd status LED, the one on the left of the earpiece. What is it for?
Thats the bluetooth LED.
my bluetooth is on, and ive never noticed it blinking. under what circumstances does it blink?
Ive wondered this same thing ever since Ive gotten this phone... I have never seen it blink and with bt the right one is lit for me...
I activated my phone yesterday and received maybe 30 or so texts since then. The notification light only lit up after one of them, which i received a few hours ago. When I got the phone I just assumed it would light up for texts like my g1 did but after it didnt i was disappointed.
So, is the green light on the right supposed to light up for text/email/voicemail/etc...notifications? thanks and sorry for asking such a stupid question and doing it in the wrong thread
The light sensor is on the left, LED on the right. If you put backlight to auto you can test by coverint the left side.
is there even an auto for brightness?or is it during calls only?
confused
i don't have this backlight auto settings.
where can i enable that?
i just have a slider where i can change the brightness manually
yeah where is that setting for auto backlight, i would love to have that.
Settings -> Display -> disable Auto Brightness, and tap it off..
i dont have that.
maybe the mytouch didnt come with that sensor?
me neither.
i dont have that option there.
bonesy said:
The light sensor is on the left, LED on the right. If you put backlight to auto you can test by coverint the left side.
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dude, as far as I know the Magic doesnt have any light senson.
the option quoted above doesnt exist
I don't think so
This has been the second time I have heard the one on the left is a light sensor by two different people , Maybe it is a light sensor but maybe some of the stock versions of android like mine {Vodafone UK 32B board} currently doesn't support the hardware??
I can see both the LEDs alright but the there is no obvious way to set the one on the left as far as I know.
Italian (TIM) HTC Magic (32A).
i now upgraded to hero rom and voila, the option is there.
bonesy said:
The light sensor is on the left, LED on the right. If you put backlight to auto you can test by coverint the left side.
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Which model do you have? As far as I know, the Hero is the only device that has the light sensor, that's why the auto-backlight feature is only available in the Hero roms and not the stock Magic/Sapphire/MyTouch roms... I don't even think that the other thing is an LED, it looks like one but I'm sure I read somewhere that someone opened up his device to check and noticed that there are no wires connecting it up to anything!
snudel said:
i now upgraded to hero rom and voila, the option is there.
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does it work?
The Magic/Sapphire does NOT have a light sensor. The Hero is currently the only Android device with a sensor thats why you see that option with a Hero ROM.
no it doesnt work. as my predecessor already noticed

HTC maple LED?!

ok i was wondering... why is there two LEDs on HTC maple and only one is being used
I noticed that too. There's got to be an app that allows you to customize how they blink. I used an old one for HTC phones but is not compatible.
I'm pretty sure the "light" on the right side of the phone is the sensor that automatically dims the backlight if you have the option turned on. I don't think it's an LED at all.
I think that there is only one LED diode exactly on the left side on the right side is a light sensor.
http://forum.xda-developers.com/showthread.php?t=680231
I didn't see anything about the second LED from that link. So does this mean the other LED will not blink?
It's not an LED.
jinbuster said:
ok i was wondering... why is there two LEDs on HTC maple and only one is being used
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The left side is a bi-colour LED with (maybe tri-colour) but so far I have only seen green and orange. Red maybe the third colour. Unlike the HTC Hermes 200 (Tytn) that had a second LED that was flashed blue when the bluetooth was active, the HTC Maple does not seem to have it. The right lens is actually a light sensor for the keyboard backlight *IF* you wish to use that feature which quite frankly SUCKS as I can't see anything most of the time because it doesn't switch on the backlight when you really need it.
I would prefer if it actually controls screen brightness. I wonder if there's a patch for that?
astrise said:
I would prefer if it actually controls screen brightness. I wonder if there's a patch for that?
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Doubtful as it only seems to be a on or off command and not a on at level command. I just wish that it would be adjustable for light level setting as it never comes on in low light conditions when it should unless you cover it with a finger.

Front LED Notification Customization

In the older HTC devices, the notification LED used to blink constantly indicating phone service service was on.
1. Is there a program that can do this for the EVO?
2. Does something like this require root?
I searched: http://forum.xda-developers.com/search.php?searchid=38508139
I don't believe there is.
Pretty sure all it lets you do LED wise is choose what applications that will cause your LED to go off.
Menu>> Settings>> Sound 7 display>> Notification flash
i saw an app in the market, wasnt specifically for evo, and had to be rooted, which i am not
search led i think, or flashlight
If you're referring to the same led flashlight program I saw, it's the flash LEDs on the back next to the camera so you can use them as a flashlight instead of the actual screen like in past "flashlight" programs. I don't think that's what the OP was looking for.
tmidle8575 said:
If you're referring to the same led flashlight program I saw, it's the flash LEDs on the back next to the camera so you can use them as a flashlight instead of the actual screen like in past "flashlight" programs. I don't think that's what the OP was looking for.
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You are right, that is not what I am looking for. I would like the notification LED on the front of the phone in the earpiece to blink green when the phone is idle and has a cell signal. I would like to know if this is possible to code into an application or even into the ROM. if it is not possible to code, then I can move on I guess.
Essentially, you want what the HTC Mogul did... constantly flashing for nothing other than to let you know it had signal. I found that quite annoying, but to each their own.

LED notification light not working

A day or 2 ago, my notification light has stopped working on my Samsung Galaxy s8
I tried restarting the phone and turning the LED indicator option in settings on and off. It doesn't seem to help or fix it.
I wonder if i should return the phone since its still in warranty and get a replacement because charging the phone works but LED doesn't show it's charging like that red dot on top of the phone.
Could somebody help please.
Thank you, Kenny
moomoopobo said:
A day or 2 ago, my notification light has stopped working on my Samsung Galaxy s8
I tried restarting the phone and turning the LED indicator option in settings on and off. It doesn't seem to help or fix it.
I wonder if i should return the phone since its still in warranty and get a replacement because charging the phone works but LED doesn't show it's charging like that red dot on top of the phone.
Could somebody help please.
Thank you, Kenny
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Hi there, easy to diagnose.
Go to the phone dialer and dial this: #*0*#
A debug menu will appear, click the LED button (middle right).
It should light up the LED, click the screen to cycle between colors.
If this works correctly, then the issue is software/misuse/app conflict/whatever.
If it does not work correctly, then your LED needs servicing/repair.
Skander1998 said:
Hi there, easy to diagnose.
Go to the phone dialer and dial this: #*0*#
A debug menu will appear, click the LED button (middle right).
It should light up the LED, click the screen to cycle between colors.
If this works correctly, then the issue is software/misuse/app conflict/whatever.
If it does not work correctly, then your LED needs servicing/repair.
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Hi thanks for the quick reply, i have just tried that it doesn't seem to work or light up for the LED indicator.
I think i might have to replace it tomorrow at the store.
Thank you
moomoopobo said:
Hi thanks for the quick reply, i have just tried that it doesn't seem to work or light up for the LED indicator.
I think i might have to replace it tomorrow at the store.
Thank you
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There is a long discussion on this subforum about the LED issue, did you use any LED control applications?
Seems like something is killing the LEDs.
Just for future reference.
Skander1998 said:
There is a long discussion on this subforum about the LED issue, did you use any LED control applications?
Seems like something is killing the LEDs.
Just for future reference.
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Hey ye i have had a look at the discussion in this sub forum and no i wasn't any sort of LED applications.
So i guess its my bad luck on getting a partial faulty device :/
Id assume its a hardware peoblem since they said reflashing the older firmware didn't work.
Thank you
(This was double posted from the main LED thread, don't know how to delete it, but it may help anyway)
To contribute to the discussion:
- there are some apps that only work in certain colors. For instance, Whatsapp is working with blue, but no other colors. I may have seen it blink once for another color, then never more.
- all apps using blue are working
- I have an app that is originally set to blink LIGHT blue and it is doing so.
- Telegram manages to blink pinkish
- charging is Red
- Fully charged is green (but again, green is not working on Whatsapp).
Looks like a software thing.

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