Why do I lose emails on my iPhone five?

Paul

Will the iphone five work if the sim card is not inside it? (sprint)? I have the iPhone 4s from sprint and the phone works as a phone even if the sim card is not actually placed inside the phone. I was wondering if this would also be the case if I got the iphone five from sprint. In other words, will the sprint iPhone 5 work without the sim card actually installed inside the phone like my 4s works?
Why will my iPhone five not produce any sounds? Volume button is turned on in settings and on the side of the phone. I do not hear the keyboard clicks or any Music nor can I hear any videos. Please assist!
Why is iMovie taking FOREVER to export a five minute video? Please, I really really really need an answer As soon as possible of how to fix this or how long it's going to take. I'm trying to export a five and a half minute long video to youtube from my iphone 5 and it's taking so long. How long do you expect it to take on a medium file size?
Where Can I Buy A Refurbished Unlocked Iphone Five or Samsung Galaxy S3? I'm with Koodo. The most I would pay for it is four hundred dollars, but I'm aiming for a lower price. Because this site is known for its ignorant visitors who think it's funny to write unnecessary and unhelpful things, I'll make the request for idiot-free responses please. Thanks in advance for anyone who can help. I would prefer to buy it somewhere in Eastern Canada.