Data on phone not working?

I've just bought a new iPhone and I'm having some trouble getting my data to work. It's been working fine up until now but for some reason it's just stopped. I've taken my SIM card out and put it back in. I've reset my network settings and I've turned my phone on and off about a thousand times and it still won't work.

I'm with Vodaphone and even when it says I have full bars of 4G it just won't work.

Does anyone know how I can get my data to work again?

Anyone who has ever broken their phone SOS?

I broke an iphone a week ago today and I just got a new one. I have the same SIM card and everything, but my last backup was on the 12th (way before I broke it).
How do I get that week's worth of messages?
I've had my phone on for probably 4-5 hours and haven't gotten any yet, and I'm worried because I know there was some lengthy info BS from my boss.

I've tried to reset, have someone send me a text, etc.
I've broken a phone before and I don't remember not ever receiving my texts.

Stupid decision but here I'm?

So I was on this site seeking arrangement,
Basically a site for sugar babies etc. Well a man willingly sent me his account info and told me to pay my credit card. Didn't seem weird since that's what the site is for. Well the next day he told me that I have to go buy $1000 worth of iTunes cards or he's reporting fraud on his account. Since he willingly gave me the info and I have proof of such can he even do anything?