I have a flip up LG phone from Verizon, and my friend has a smart phone using a service in Britain. I'm stateside. In the past, we've sent a couple of pictures just fine. But now it's not working. Any ideas? I'm not sure what service he has, and it's his sister's phone, so he doesn't know either. Could the pictures just be taking a while to get here? Do we need to free up memory on our phones? Thanks.