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I have problems with my Samsung Galaxy S4 display… recently at low brightness somd vertical and horizontal lines appear at the screen these can be better seen on white background. Also on high brightness it displays some weird and strange colors like it has too much contrast and something like light red overlay is seen… also the lines show up. What do I need to do, what it can be? Sometimes the display starts blinking and becames more brighter and while typing on keyboard I noticed a lag and sometimes it displays wrong keys.
Hi It’s definitely a screen issue , it will be resolved if you replace it
