Wow same issue with my 4month old lenovo k4 note running marsmallow 6.0. The same issues started a month ago and it's getting worst everyday. I have observed that the issue occurs when the phone temperature rises above 38 degrees Celsius which is another issue with almost all lenovo phones. Other members here have tried resetting, formatting and changing their firmware but the problem returns so corrupt files is not the culprit.
How come lenovo haven't solve this? People here have issues in their lenovo 4.2 JB and I have the latest phone and android OS but the same old issue exist.
Maybe lenovo is really full of crap, as I remember when I bought this phone I already seen defects on my lcd, its has hot pixels which is annoying when I use with vr glasses, so I have them replace with another brand new phone but still the new phone has another issue having hundreads of micro stock pixels and a red patch on my lcd which is visible on black background. Sadly my 7day replacement period has ended so I have to rely on their slow sercice center and buying a brand-new phone and immediately needing service feels like being cheated.
Now I know that Lenovo is a crappy chinese brand, it's no different from other chinese cheap phones.
To everyone who has fell victim of this crappy company pls. Warn your friends, family and evryone you know to stay away from this brand. Me I should have listened to my brother who before had lenovo a7000 and that thing heats up like hell.
:-\:'(
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