How to delete multiple contacts at once on the iPhone?

My mom got an iPhone and she set herself up on the iCloud account. Then all of her 600+ contacts ended up on my phone, even when i erased the iCloud account, i couldn't delete hers while retaining mine. It is a huge pain to go through and manually delete every single one… Any suggestions?

What happens if i reset my iphone 3gs?

I have an iphone 3gs, and i want to take restrictions off bc my mom was playing with it and put a bunch of things in restrictions, with a passcode that no one knows. I'm thinking of resetting it, but i don't want to lose everything and find out it didn't even take restrictions off. So a) will it take restrictions off? And b) will i lose everything?

How much information should be included on an email signature?

I have a boss who includes his name, title, company logo, phone numbers, and slogans. Not to mention a quick listing of all the things our company sells. I on the other hand prefer to keep it simple. Just my name, company name, and phone number because most of my customers are "on the go" and don't need to download tons of stuff on an iPhone while in the car.

But what do YOU think is the way to go? Include everything so that there's no excuse for not responding? Or keeping it simple?

Would 750mb Internet Be enough?

I'm going to buy a iphone 4s and i'm wondering if my plan is ok

£29 - 750mb - Unlimited Texts - 500 mins

could someone tell me if thats ok

or even better explain to me if my internet would be good enough for some medium uses

Maybe siri every now and then, youtube video from time to time, facebook, internet?

please would soemone help

Adding music to iPhone 4 using linux: Ubuntu?

I have some songs that I have and I wanted to add them to my iphone 4. They are normal mp3 files. I know I could run a virtual machine but I was just looking for something a little less complicated.