У вашего броузера проблема в совместимости с HTML5
Error: Unfortunately, System UI has stopped
How to fix unfortunately system UI has stopped in android.
1…phone off
2…volume up + power on button
3…boot menu open then click “ wipe data/factory reset”
3…delete all user data
4…click on reboot system now..
5…phone working..
for some time your phone working good but if have problem fully resolved go to service center.
ASHISH GOGIA