Mobile World Congress 2009, Barcelona, Spain June 05, 2017 Abhishek Upadhyay 1746 Views No Comments REVE Systems at Mobile World Congress 2009, Barcelona, Spain The Author Author Recent Posts Abhishek UpadhyayAbhishek is a graduate in Electronics and Instrumentation currently working with REVE Systems. A digital marketing professional, Abhishek also likes to write on several tech topics not limited to telecommunication. Latest posts by Abhishek Upadhyay (see all) 7 Benefits of Hosted VoIP Service for Startups - September 15, 2020 Which One You Should Choose White Label Messaging Apps or Custom Apps? - June 15, 2020 Why You Should Create Your Own WhatsApp like Messaging App - February 14, 2020