Question: Success in the flagship pricing tier will be critical in 2018 for Samsung Unless Samsung changes its portfolio strategy IHS Markit forecasts Samsungs smartphone shipments will decline by 26 percent in 2018 compared with overall market growth of 39 percent
Please fix the punctuation.
Fixed: [Success in the flagship pricing tier will be critical in 2018 for Samsung. Unless Samsung changes its portfolio strategy, IHS Markit forecasts Samsung's smartphone shipments will decline by 2.6 percent in 2018 compared with overall market growth of 3.9 percent.]

Question: I saw that you are a teacher at a high school name and reputation
Please fix the punctuation.
Fixed: [( I saw that you are a teacher at a high school name and reputation)]

Question: If a message is repeated in all news outlets elctronic and paper in all movies and books in textbooks for universities and basic schools as well as mouthed by teachers and public persons at all levels it will sink into the consciousness of the people who hear and see the message
Please fix the punctuation.
Fixed: [If a message is repeated in all news outlets, elctronic and paper, in all movies and books, in textbooks for universities and basic schools, as well as mouthed by teachers and public persons at all levels, it will sink into the consciousness of the people who hear and see the message.]

Question: So should you again have no idea which could give your your girlfriend and you want something which not everyone has my absolute tip
Please fix the punctuation.
Fixed:
[So should you again have no idea, which could give your your girlfriend and you want something, which not everyone has my absolute tip:]