How do I back up my samsung S5 data. I have a Samsung S5 and without no reason the screen has stopped working, its totally black the lights are still active. I have taken it to the mobile retailer and they have tried to reset it by taking the battery out etc but with no joy its not fixed the problem. They have said it needs to go for repair. But I have photos on the phone that I would not want to loose. I was advised by the shop to download Kies onto my lap top and then I could back up my phone data. Having downloaded the software today and plugged in my phone I am still left with the problem of unlocking the phone with a totally black screen I cannot see the keyboard on the screen to type in my password. Therefore my question would be how can I unlock the phone with a totally black screen?. And is there a way to save my data and my photos?
You can definitely back your data up. Even if the screen is broken or black.

First, boot your S5 into recovery mode like this:


Switch your Samsung Galaxy S5 completely.
Boot into Galaxy S5 recovery mode by pressing and holding Volume Up, Home and Power keys at the same time.
Release all three buttons when Samsung Galaxy S5 screen flickers and the main screen of Recovery mode appears.


Your phone should now be in recovery mode. If your phones' screen doesn't show any signs of life during this process like some sort of flicker, repeat the process and check through adb with

     adb devices


until it shows your device id.

Once it shows your device id, enter the following in the command prompt

    adb shell
    echo "persist.service.adb.enable=1" &gt;&gt;/system/build.prop
    echo "persist.service.debuggable=1" &gt;&gt;/system/build.prop
    echo "persist.sys.usb.config=mass_storage,adb" &gt;&gt;/system/build.prop
    reboot


Once you've completed that, you can download a free software that when run on your pc allows you to control your android device. Including touch response and swipe for screen unlock or password entry. The software is available at the link provided. I've personally tested this with multiple android phones including s3, s4, and s5 and it does work. (kids can be dangerous around phones :/).

Hope all this helps

References

Boot S5 into Recovery

Control device with broken screen