Juat curious if anyone else still has this issue. When I use Hangouts or Messenger on T-Mobile I always get double messages. Like the same message will come a few times. When I use Textra this doesn't happen. Also when I use Wi-Fi calling set to Prefer Wi-Fi I often don't get messages until minutes or hours later, and people on the receiving end will get my messages delayed or only parts of my messages. Is there a known fix for this? Would switching SIM cards possibly fix the issue? Any help is greatly appreciated. Thanks.