[Edited] Removed Phone Number
Hi Anand,
I would say you have an answer with you. You want to render content from AEM in other applications. In your case, it is mobile application then one thing is sure that you can't serve whole page from AEM and you have to serve content fragments from AEM.
If you are going to use AEM 6.2 then nothing much to implement there is OOTB functionality for Content fragments. However, other than AEM 6.2, you need to implement components & templates in a way, you could get partial content.
FYI
AEM does provide based on REST principal where you can direct get node content. For instance
http://localhost:4502/content/geometrixx-outdoors/en/home/_jcr_content/bodyPar/text.html
Above url would give your content authored in text node.
I hope this would help you. Let me know if you need more details.
Regards,
Jitendra