To add to your comment. What they need to know is you obtain jobs based on your skill not because of a category. Saying you're a mobile developer does not help much to sell to clients. You can say that you can create React Native Apps, ios native app or/and Android Native ones. Be as specific as possible about your skills and how they help your client instead of slapping a general label on your profile (like web developer, full-stack developer).
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To add to your comment. What they need to know is you obtain jobs based on your skill not because of a category. Saying you're a mobile developer does not help much to sell to clients. You can say that you can create React Native Apps, ios native app or/and Android Native ones. Be as specific as possible about your skills and how they help your client instead of slapping a general label on your profile (like web developer, full-stack developer).