iOS 10.1.1 issue

Hey everyone!

I'm not sure if this is an issue for others but I've been experiencing issues with my iPhone 6s Plus since updating to 10.1.1 specifically in iMessage. The only real problem is sometimes I won't get messages, like for instance I can get phone calls from people, but messages won't send or receive until randomly the phone decides it's going to recieve 20 messages all at once. My friend who has a 5s on 10.1.1 is also having issues with messages too. Not sure if maybe apple has been having server trouble recently or if it is the update? Not sure. It never did it before the update... anyways, if anyone has experienced anything similar, or knows of a fix let me know! I might just end up doing a restore anyways here soon so if anything that might fix it. Not sure. Thanks in advance!