Why can't my iphone for virgin mobile iphone access the internet or transmit mms?

Well in my second month with vm my internet and mms suddenly stopped working so i called vm and they told me nothing was wrong so i switched my phone for a new one and it took them three days to activate it and now i'm still having the same problem i'm wondering if anyone else are having these issues and how to solve them

How to upgrade my ios 4.1 to ios 6?

II have, well my sister have a iphone 3gs that is jailbroken. She has ios 4.1 and she wants to update to ios 6.Is it possible for this to take taht action or not. Would it damage the phone or not. How can i do it? Do i need to download a software to do it? Thanks

Added (1). Duncan - Would it still work if my iphone 3gs is jailbroken already.

8gb iPhone says storage is almost used up?

I have an iPhone 4 that I have had for a few months, it's 8gb and has been giving me trouble
Every once in a while when I try to take a picture it will pop up with a warning that says "Not enough memory to take another photo." which doesn't make sense because I have only used 6.3 gb, but the warning goes away after I turn my phone off
But just now as I was trying to get on Instagram my phone had a warning pop up that said
that my phone is almost at full capacity, but shows that I still am only using 6.3gb
I'm not sure why it's coming up with these warnings,
but I think it's because of some of my apps, is there a way to clean these apps up?
Or is it a completely different reason?

Iphone 4 bottom mic not working

I dropped my iphone 4 and now when I make calls/receive calls, the person on the other line can't hear me at all. The only time someone can hear me is through face time. I really don't know how to fix it, someone help me!

Added (1). I've also tried using my apple headphones but it still doesn't work

IMessages waiting for activation?

Well my friend has an iPhone andher iMessages was working fine until, she turned them off. Now she can't turn them back on again it just says waiting for activation but it never activates.

IPhone 4 not switching on or charging

So I have an iPhone 4 and I'm pretty sure my phone died today, as I went to charge it later on, it would go to the apple sign as soon as I plugged it in to charge and then it went to my passcode lock screen and then went black. It did the repetitively until I plugged it out.

I plugged it in to my other computer with a different USB charger, and now it doesn't come to the apple sign at all, it just stays on the charging bar in the middle of the screen with a bit of red and will not charge or switch on at all.
I've tried holding the lock button and home button at the same time and still nothing.

This happened randomly, and I would really like some help if anyone can give me some advice!

Privacy settings on tumblr app?

I just updated my tumblr app, and I was trying to post a picture from my iPhones gallery when it says it like doesn't have access to it and that you can get it by going to the privacy setting but how do I get there exactly?

IPhone turned off and won't turn back on

I have an iPhone 4 and I was on Instagram and it just randomly shut off and now it won't turn back on. I tried to plug it in to the charger and nothing happened. I also tried plugging it in to my computer and nothing happened. Then, I tried holding the home and on buttons at the same time, and still nothing! Please help, I use this phone for everything from work to college and I need it!