It affects them in that everytime an iPhone users text me a video I have to ask them to post it somewhere else so I can view it. The videos are so small and blurry I can never see what's happening in them. I[hone users are have unsent messages to android users without cell service which happens all the time and is confusing why some texts send and some don't and it's a function of the type of phone the receiving party has (?!)
You get a notification if your iPhone can't send the SMS, and a clear indication that it didn't send.
The lack of ability to leave a group text chat is the most annoying thing ever. Spammers send these group texts and there’s no way to leave.