Samsung a40 turned off and won't turn on again

Hello,

My Samsung a40 turned off by itself after being charged to 80%, I plugged it out when it was charged to that level.

It then turned off by itself. I tried twice to turn in on. It stayed on for maybe two minutes.

Then it went completely black again. I tried pressing the power button and volume down for 40 seconds, then the power button with volume up and I have tried pressing both the volume up and down together to no avail.

I have had it charging again for ten minutes and it will not restart.

Would anyone have any suggestions or has the same thing happen and how was it fixed?

Thanks

https://www.boards.ie/discussion/2058208844/samsung-a40-turned-off-and-wont-turn-on-again

The charging symbol came on whilst the device was still charging and it charged to 90% and then the screen went black again. I tried turning it on again and no luck. I also tried the various combination with the power button and volume button and no luck

Dempo1

I believe you hold on/off button simultaneously with volume down button for a few seconds, I'm a little concerned you may have a battery issue given your device is saying 80% charge and it only stayed on for 2 minutes before completing shuting down 😒

I would disconnect charger while trying to restart. If this doesn't work it may need repair (is your phone in warranty 2 years from new normally)

https://www.boards.ie/discussion/comment/117892042#Comment_117892042

Thank you. Still no luck at all after disconnecting from the charger and trying the volume down and on/off botton at the same time. Unfortunately, I bought it in a second hand shop fonez in February as I was really stuck for a phone with gomo and it seemed at the time the easiest option then getting a phone unlocked

Dempo1

https://www.boards.ie/discussion/comment/117892082#Comment_117892082

Fonez, I believe have a good reputation, a battery replacement (if that's what it is) is not expensive, I'm on go mo myself 😏 sorry I can't offer any other option , hope you can get sorted ASAP

reboot

Need to be careful pressing more than one button at the same time,I've done that by mistake and the phone,not Samsung went back to factory reset. I eventually got the screen back,but in Mandarin Menu!