Can I receive mms on iphone 4S without having mobile data on all the time?

On every other smartphone I have owned I can disable data, so as not to use it all the time. When receiving a picture message, the phone detects this and enables data only to download the picture.

Can I do this with an i-phone, too? I don't want mobile data on all the time because I have a low data allowance.

Shooting a high quality video on iPhone 4s?

Is it possible to film high quality video on iPhone 4s? When I watch the video I filmed on iPhone, it seems pretty decent, but when I transfer that video on my laptop it becomes all grainy and awful. Is that an iPhone's problem or my laptop's? Any advice on how to transfer video from iphone to laptop so that it has good quality?

How to force a tab closed on Google Chrome for my iPhone? (4S running 8.1)?

A suspicious looking virus-warning popup leaves me with the only option of pressing OK which I fear may lead to more malware.

Is there a way to force the tab (or all tabs) closed when I can't get to the "X" to do it as you normally would?

Closing and reopening Chrome and turning off/on the iPhone did not help.

Is iPhone 6 able to use Chinese carrier?

I'm trying to buy an iPhone 6 online, and I wanted to buy an unlocked one(Which is able to use Chinese carrier)
but the problem is that it is a must to choose a carrier if you want to buy an iPhone 6. The one with T-Mobile is the full price and the others are not. Does the one with full price mean that I can use this in China or only T-Mobile?

Last question guys, will iPhone 6 have any discounts on black friday?

I'm receiving all of his text messages but he isn't getting mine?

I can receive all of his texts. When I respond, it says they are sent but he never gets them. I have an iphone 4, I forgot what kind his is. How can I fix this? It's only him that isn't receiving my messages. My texts work fine with everyone else. He didn't block me and I didn't block him. What's going on?

How to stop being jealous over stupid things?

My best friend just got iPhone 6.
I try to be happy for her but I can't. I feel so depressed and jealous. I feel like now all she's going to talk about is her new phone and show of. Any advice please?