S8+ with Message+ Not recieving texts from iPhone users

[Android Central Question]

I have a S8+ on Verizon and I use Message+ for texting. My family all uses iPhones and sometimes I don't get their messages and they don't get mine. It's frustrating because sometimes it interferes with picking up kids, or knowing when someone is out or unavailable. They also sometimes come in hours or days later.

Thus far I've rebooted, deleted group messages, deleted messages heavy with images. I'm running Data Saver (because Chrome is a POS that likes to hemorrhage data) but I've gone into the settings and excluded Message+. I'm on WiFi whenever possible. I'm the odd man out, so if it's something where iMessage doesn't like MMS between carriers, I can't really ask everyone else to make a change. Just seeing if there's something else I can do to increase the delivery success rate.

Thanks.

 

[djrakowski]

Have you ever used an iPhone on this line? If so, you'll want to go here and de-register from iMessage.

 

[xadrian]

This is my question, didn't log in first. No, I've never had an iPhone. I saw that answer about Apple "not letting go" of numbers, but n/a here.