Hi ,
I am 3 year experience full stack web developer with expertise in different technologies viz php , mysql, nodejs , javscript jQuery angular , html css.
I can provide you socketio based nodejs chat server and its integration in Native android app using socketio libarary in java.
Chat server has text, images and emoticons sending capabities , you will be needing host for nodejs and mysql DB.
Let me know if we can discuss this further.
Regards,
Vishal Sharma