My wife and I had Samsung galaxy II's for the last two years ( we are with tmobile) and never had issues texting pics to one another, even with our wi fi turned on. She got an LG g2 the end of November and from that point on, she would not always get my pic messages. Now I got a Nokia 925 (windows 8) and neither one of us seems to be able to receive or send picture messages to each other when our wi fi is on. Sometimes my phone gives me a message that mine can't be sent. This occurs even when we have a wi fi signal. I even have a hard time receiving simple text messages from her that have some sort of emoticon in them. Now if I send something to my brother while connected, he gets it every time and he has an iPhone 5c with Verizon. Now, if we both have our wi fi off, our pics and texts go through no problem. Girl at the tmobile store told us that's just the way some of the newer phones are. Is that just a load of [censored], or is that just something her and I will have to live with? Other than. This one nagging issue, we both love our phones, ijust hate worrying whether or not she got my text, it really screwed things up during Christmas shopping for the kids this year.