Google cloud messaging Limit
问题 I know that exists similar questions on site, but I confused because http and xmpp have difference limit: this page say differences between http and xmpp . first limit is [ xmpp & http ]: up to 4KB of data second limit is: http : You can send out a message to 1000 users at a time. (ref) xmpp : For each sender ID, GCM allows 1000 connections in parallel. (ref) You can send out a message to 1000 users at a time. so if you have more users you'll have to send the message multiple times from your