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Repair and device guides for the 2016 Samsung Galaxy J5 smartphone, model SM-J510FN.

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back button & apps button KEYS not working

Apps button & Back Button not working, tried that Firmware version (*#2663#) thing also, TSP FW update and Touch key FW update both, still not working. Please help its == Samsung J5 ==

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Just replaced lcd on a friend's note 5 and back/recent keys will light up but no action.. have tried (*#2663#) ,hard/soft reset with recovery reboot and deletion of partition cashe', With no avail. Is it possible the ribbon cable connection for the lcd isn't a complete one? Allowing the picture but not the soft key functionality?

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It should be noted that the light for the back button and recent apps button might also be turned off if your samsung is in Power Saving mode. Go to Settings>Power Saving>Restrict Performance and uncheck the box that turns these lights off. Once the box is unchecked, your phone will use a little more battery power in the Power Saving mode, but your Back button light and your Recent apps light will both illuminate.

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Hi!

This is what I've got for you.

Go to Settings > Accessibility > Dexterity and interaction > Assistant menu

From here, toggle the switch to "ON". This will create a hovering circle with a window with four panes inside it. If you interact with the hovering circle it will open a new window in which you have access to the back and recent apps buttons via an onscreen button.

Not sure what has disabled the hardware buttons, but this should give you access via onscreen software.

I know it's not a true fix, but a work around.

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16 Comments:

Omg it works!!! Thanks you so much

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It Worked. You Made My Day. Thanks.

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What do I do with the last windows

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Great ... good solution

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Thank you Alex!!! God bless you!I have trouble this for 4days

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If it is similar to the j3, the screen is above two sensors that look like small circuit boards. I replaced a screen a while back, and ran into the same issue. I took the screen back off and re installed it. I made sure to line the groves on the bottom of the screen with the small touch sensors. It fixed the problem for me. When installing a screen you should always test it first. You can plug the screen in, turn the phone on, and dial *#0*# this will bring up several test options. The touch test will allow you to test the digitiser, and the subject test will let you test all the buttons including the back and apps button

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Sub key test* not subject. Sorry for the typo

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Back button app. is the last solution, but is working.

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I have a j5 prime with the exact same issue, I found app in app store called easy home for samsung. It works perfectly, hope this helps

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Turning off "Power Saving" fixes the issue of backbutton not working. This is an annoying bug.

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Lionel Myers will be eternally grateful.
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