د پیرودونکي د برانډ ادراک او وفادارۍ ترمنځ اړیکې مطالعه - د HK آیفون او سمارټ فون کاروونکو د پیرود چلند مطالعه
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the voice quality of the phone needs to improve, and it is the most important thing.
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screen should be bigger
price needs to be lower
should be the highest level
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