"WARNING...Custom OS can cause problems"

"WARNING...Custom OS can cause problems" Hi I have Samsung Galaxy s4 and it has this problem with OS and shows this when i turn on "WARNING...Custom OS can cause problems" but i accidentally pressed the volume down button and now it's not turning on. Can you please tell me what to do?
Asked by: Guest \| Views: 154

Total answers/comments: 3

Comments display order:

bert [Entry]

"Maryam,

Now your phone on download mode. just remove and reinsert the battery.

Press power button and phone will be boot as usual."

bert [Entry]

Try pressing the volume up button + Home + power button

bert [Entry]

"How to solve this problem

To on my phone samsung mega i need to connect to power bank and than press button power+volume down+home.

After press 3 button message appear Warning !!A custom OS…

I select Volume down to restart phone .

After restart my window pop up.

My battery appear 100%

I cant boot my phone without support power bank /power supply and when press power button nothing happen .

Any solution"