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Phone is flickering with colored lines and screen is also jumping
Hi @Dondonn,
I'm sorry to hear this. 
Would you be able to provide a screenshot of this it would be very helpful to determine if this is related to your devices hardware or software.
I would also recommend that you try to disable developer settings in your device if you have them enabled. To do so, go to: Settings > Developer options > Off. If you can't find developer options under settings they are already disabled.
Let me know how it goes.