Hi there am looking to replace my Samsung S7 due to too a 2 inch black out on bottom part of screen. Phone was flickering then went to that had to go back to my older phone.I tried to do factory reset on Samsung S7 and still same problem. So now looking to buy a used phone and am looking at the following phones a Samsung A70 about 4 months old , Huawei P20 pro or a Huawei P30 Lite which is basically new. Would like some feed back of which one should pick and why ?