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  1. Thread Author  Thread Author    #1  

    Default TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    Having a weird issue with my screen.

    Occasionally, (about 5 times in the last 2 weeks) when I grab my phone, the screen does not come on. I can see the multifunction buttons light up, I can swipe the screen and hear the sound for the unlock, and if I tap on the screen it does not light up and screen stays black.

    If I hold power, it does not reboot. if I push home it does nothing, but I can hear that the phone is on, if a call comes through I can hear it ring, and can answer from my home button, but the screen stays black.

    I can do a battery pull and phone starts fine. It is as if the backlight is not coming on at all at times, or possibly like a proximity sensor is not allowing the phone to recognize that the screen should be off.

    Cannot tell if it is a hardware issue or software issue. I have not changed any software since I got it a few weeks back, some software has updated, but this is happening comepletely at random and always when the phone has been locked.

    Phone has never been dropped and is in a case and has no screen protector, there is not a mark on the phone at all.

    Should I arrange to swap the phone? should I contact my carrier?

    Anyone else have this issue?

    Thanks.
  2. #2  

    Default Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    I've heard about this, you can try a factory reset and they may or may not do the trick.
  3. Thread Author  Thread Author    #3  

    Default Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    yeah I called TMO, They had me wipe the cache partition from recovery mode, and asked me to do a backup and then do a factory reset from the recovery mode.

    I will try that and see what happens, if it is still doing it, they will swap the phone for me.
  4. #4  
    konvajw's Avatar

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    Default Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    Quote Originally Posted by AshManMB View Post
    Having a weird issue with my screen.

    Occasionally, (about 5 times in the last 2 weeks) when I grab my phone, the screen does not come on. I can see the multifunction buttons light up, I can swipe the screen and hear the sound for the unlock, and if I tap on the screen it does not light up and screen stays black.

    If I hold power, it does not reboot. if I push home it does nothing, but I can hear that the phone is on, if a call comes through I can hear it ring, and can answer from my home button, but the screen stays black.

    I can do a battery pull and phone starts fine. It is as if the backlight is not coming on at all at times, or possibly like a proximity sensor is not allowing the phone to recognize that the screen should be off.

    Cannot tell if it is a hardware issue or software issue. I have not changed any software since I got it a few weeks back, some software has updated, but this is happening comepletely at random and always when the phone has been locked.

    Phone has never been dropped and is in a case and has no screen protector, there is not a mark on the phone at all.

    Should I arrange to swap the phone? should I contact my carrier?

    Anyone else have this issue?

    Thanks.
    I was having a similar issue, but if I let the phone sit for 30 seconds while screen was black it would eventually come back on. Another thread had a tip about turning off the smart tv remote from the lock screen (which I also had setup) and this fixed the issue. Since I did that, so far so good for me also - but not sure if same exact problem for you or not since sounds like slightly different symptoms.

    Posted via Android Central App
  5. Thread Author  Thread Author    #5  

    Default Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    I don't use the smartv remote. ... it is happening still but have not done a reset yet

    Sent from my SM-G900T using Tapatalk
  6. Thread Author  Thread Author    #6  

    Default Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    So Fast forward a couple of weeks, and two s5's later, still having the same issue. The first replacement S5 they sent me, was unresponsive right out of the box, powered it up and could hit the lock button and phone would lock after about 10 - 15 seconds, hit the lock button or home button, and after 15 seconds would show the screen, then try swiping to unlock and it would take another 5 seconds to unlock. mind you this was also fresh from startup with no data or anything on it.

    Sent it back and they sent me a new one which arrived friday. everything seemed ok, installed everything from scratch and did not restore my data or anything, and set it up with only the bare basics so I could trial run the phone. Fast forward and the phone has been constantly freezing in the same manner as my original one, only seemingly more frequently. In the last 4 days it has frozen up at least once or twice per day requiring a battery pull to reboot. phone is responsive, and I can call it, etc, but the screen does not light up, its as if the backlight is not turning on.

    About to call TMO and send this one back and request a 3rd one to be sent out.

    I love the phone and if this seems to be a normal thing for it at this time, I have no idea what I will do.
  7. #7  
    1Coopgt's Avatar

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    Default Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    I had this happen on my Asus Tablet once . Pretty much freaked out . Your screen setting is to low . Think I had to do a FDR to get the screen back to normal . Then I made sure my screen was turned all the way up on brightness . Hasn't happen since . GL
  8. Thread Author  Thread Author    #8  

    Default Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    This seems to lock up shortly after a phone call has been received. spoke to tmo and they told me its not the phone, but software and it is impossible to have the same issue happening on multiple devices. They basically told me to call samsung.

    So if that is the case, then I will reach out to samsung to see what they say.
  9. #9  

    Question Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    I am on my second S5. I got a replacement after the front facing camera got a loose internal piece that shifted and blocked the lens. Since I received the replacement, I have issues waking up the phone from day 1. When I use the home button to waked the phone, about maybe 1 out of 20 times the screen back-light will not come on. The capacitive buttons light up and the screen seems unlocked because i can hear the unlock sound when i swipe and hear the tap sounds when i touch it. I have to re-lock the screen using the power button and then unlock again for the screen to light up. This never happened on my first one. Anyone heard of this? Should I call and get another replacement?
  10. #10  

    Default Re: TMO Galaxy s5 screen goes blank but phone working?!?!?!?!

    I often turn Auto brightness off and manually turn it very low, because Auto is unfortunately too bright in a totally dark room. Next day, with plenty of light, the screen was black. Had to blindly swipe down for Settings and blindly tap the location of the Auto brightness button from memory. Now I try to remember to manually turn the brightness above minimum and switch back to Auto before putting the phone away for the night.

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