Fix Unfortunately, system UI has stopped Samsung (lollipop marshmallow). This error is show when you operate you mobile. first we try wipe data and second we try flash firmware.

1 – Fix Issue by recovery mode

First process is that you need to wipe data your device.

In this condition, you have to clean your device. You can fix this error by using recovery mode because a system file has crypt by the viruses or user data.

• You need to go recovery mode by pressing volume up, home button, Power Key for 10-second.
• then select wipe data option in your recovery mode.

2 – Unfortunately system you I have stopped by flashing

Second process is that you need to Flash your device.

• Install Samsung USB Driver into you PC.
• Download Odin and extract it into desktop.
• Download and extract firmware file into desktop.
• Open Odin
• Put you samsung device into Download mode.
• Turn you device off and press volume down key, home key, and power key while insert data cable into your mobile.
• Select firmware files into Odin and start flash.
• this will make your android device like new.

Unfortunately, system UI has stopped Samsung (lollipop marshmallow)

Unfortunately and if you are of the operating system.in what android is affected malware. Moreover, it is issue generated by the memory scarcity when android system didn’t find memory to transfer data OS into hardware this error occurred

There are two conditions by which you can pick unfortunately you I had is Dr can be fixed by the following tutorial