my j7 2015 is stuck between ultrapowersaving mode and normal mode !! - Samsung Galaxy J7 Questions & Answers

hi, yesterday i turned ultra power saving made on then when i turned it off the phone is almost normal but got some of ultra power saving made features like the battery is better now, when i leave an application running in the background it shut off in minutes which never happened before like this, settings color is so classic here are pictures, i restarted phone, turned ultra power saving made on then off, nothing happened but this, idk if this is perfect or not , i like it but i hope i can leave this half mode sometimes, help!
i got pictures attached here.

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[Q] Can't see anything on display

WARNING: not a native english speaker.
when I try to start the phone the following occur:
the display light turns on, shortly after that the phone emits that startup vibration, the backlight remains on for aprox. 85 seconds then the phone aparently shuts down. that meant, the backlight of the display turns off.
problem history:
I was at work and as usual i was listenin to music via handsfree. while my phone was in poket it seemed that somehow my poket pressed the sleep button and turned the screen up. no prob here. i got the phone out of ma poket. reverted the volume @ maximum and then locked the phone and turned the screen off and putted back in pocket. after some time i wanted to change the song. got out the phone, turned on the screen but nothink apeared except a horizontal line in the middle of the screen. I tried to shut down/up the screen but nothink apeared. after a couple of tries the screen turn on but it was unusual what i saw on it. I saw a sketch of the energy rom home screen with diferent colors.
Meantime i was tryng to get the screen outta sleep the music still played in the phones.
I thaugt that a reset will do but it didn't. got out the battery and got home. reasembled it, powerd up the phone and voila! the phone started up normaly. got out the battery, introduced the sim card. powerer up the phone but bad luck. the happiness was short lived. the problem camed back. another thing i noticed is that when i powwer on the phone i let it on but it wont output that energy rom bootup sound.
Can someone elude me with whats the problem with my phone?
hope I was clear enough!
Have a great day/night!
UPDATE: LEFT IT OVERNIGHT WITHOUT THE BATTERY AND NOW ASSEMBLED BACK. IT'S WORKING BUT I THINK IF I GIVE A RESTART THE problem will come back.

[Q] power saving feature not working

Hi, I am new to galaxy s3 but the first day I got my phone I used to hover my finger on top of the speaker or camera and the display would turn off, I guess it is a power saving feature, I could put my phone face down and it the display would turn off instantly, I liked it a lot, but after a day, it does not do it any more, is there a setting I may have messed with?

[Q] will not turn on - flashing green light

Put my sim free s6 on charge last night (wireless) as i always do and when i woke up the green led was flashing quite fast.
I went to wake the phone up using home button and nothing, nothing from powerbutton either. Tried holding down powerbutton and have also tried charging manually but still nothing. What was strange also was that i did not get any charging sound when i inserted the cable to try an charge it.
I am pretty sure its charged though...just will not turn on.
Any ideas?
No completely stock phone, very few apps on it, just over a week old.
Updated to 5.1.1 via ota a couple of days ago.
Just done a bit of a search on the Internet and says to hold all the buttons down which I've done and has now restarted and seems fine.
Does not explain what's happened though
problem solved?
Well it's working fine now but does not explain why it just died for no reason and would not do anything without rebooting with that method.
Phone was 100% charged when started up also....very strange
Got same thing happen to my S6 after updating it to 5.1.1 . Phone have random freeze problem , left it on desk then someone called and a didnt get it up so notification light blinked i wanted to check who was calling but after pressing power to wake it up it wasnt working same with home button. So i had to keep pressed Vol- and power to reset phone . I wonder is it a 5.1.1 bug ?
Hi my phone is a Samsung Galaxy s6 and I've had it about a month the it just stopped working it had no life although when I go to charge it it starts charging but if i try to turn it on it just flashes a green light on the bottom of the phone what is this please
You don't need to hold all buttons down. Hold VOLUME DOWN+POWER for a few seconds and it will do a forced reboot.
I have the same problem with my s6 edge. Tried everything, and nothing is working. Any other suggestions on how to turn on my phone?
Hi! Did you get any responses? I'm having the same problem and don't know what to do
Thanks, this helped me out. 3 buttons at the same time. I did it long, maybe needlessly.
i had my Note 8 phone working absolutely fine sitting at my desk. I picked it up and saw ~50% batt. Got into a subway after 10 minutes and tried to check the time - the phone was completely dead. Tried everything under the sun - read 2 posts before this one and then found out the solution was to hold all the 3 buttons (important to note - the down volume + bixbee + start buttons) all at the same time for almost a minute to get it started.
All this time a green led light was flashing on top right of the phone.
nakvee said:
i had my Note 8 phone working absolutely fine sitting at my desk. I picked it up and saw ~50% batt. Got into a subway after 10 minutes and tried to check the time - the phone was completely dead. Tried everything under the sun - read 2 posts before this one and then found out the solution was to hold all the 3 buttons (important to note - the down volume + bixbee + start buttons) all at the same time for almost a minute to get it started.
All this time a green led light was flashing on top right of the phone.
Click to expand...
Click to collapse
Same here with my note 9
Green light on and cannot open the device. Please help

Gear S3 button power on/off problem

Sorry for my bad english. I use google translate.
Hello good day.
I tell you my odyssey.
A month or so ago, scrubbing dishes, my watch got very wet by the bottom of the bottom button. I go into a continuous reboot with an on-screen message that says REBOOTING ... It's as if it got caught. I dried it the best I could and it didn't give problems again. I did all this as quickly as possible so that no sequels were left.
After this mishap for a while if the clock runs out of battery at all and I put it to charge, when it reaches 100% and I remove it from the charging base, when trying to turn it on there is no way. It does not turn on. The only way to turn it on is to put it back on the charging base and press the power button.
Yesterday I put it to charge because it went off completely and when I was carrying a 4% load I turned it on again leaving it on the base. At the time I return and the clock off and the charging light of the base flashing in red ...
I already changed the motherboard and the battery in its day. It is no longer under warranty.
Any idea where to throw? Thank you.
P.S. It has given me to turn off the clock with the 92% battery. Now it doesn't turn on. That is to say that the power button leaving it pressed to exit the shutdown menu if it works but once the same button is turned off to turn it on it will not ...
My problem in a video. In spanish. Sorry.
Currently experiencing the exact same issue with my Gear S3 Frontier. If i keep the top button pressed in, it boots normally and stays there, but if i let go, it acts like its being constantly pressed, and thus, restarts the watch in a loop. Have you ever found a solution to this?
VL4DST3R said:
Currently experiencing the exact same issue with my Gear S3 Frontier. If i keep the top button pressed in, it boots normally and stays there, but if i let go, it acts like its being constantly pressed, and thus, restarts the watch in a loop. Have you ever found a solution to this?
Click to expand...
Click to collapse
Sounds like you might need to buy and install a new power button connector? They can be ordered online and are quite inexpensive, IIRC. Edit: Yup, still available: https://rounded.com/samsung-gear-s3...ic-sm-r770-volume-flex-cable-gh59-14696a.html

Solid white led + Black screen

Galaxy S6 SG-G920T
The battery was dying quickly, when charging it overheated the phone. She always used the phone until the battery hits 0% and it turned off. This time when she put it to charge the phone heated and it didn’t appear to be charging and the phone didn’t turned on.
She went to a phone repair center they changed the battery but the phone didn't turn on.
When I got the phone force reboot, combination didn't work until I pressed Vol Down + Home + Power for 10 seconds (I think I entered download mode) the phone led turned solid white with black screen but the phone didn't do anything I did number combinations for forced reboot and didn't work until the battery runes out and it turned off. Try to turn on the phone and it doesn’t.
Any ideas what is happening?

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