All my contacts deleted can i get them back?

I recently updated my iphone 3gs with the latest software and it deleted some of my contacts added numbers i don't know or ever seen before and mix some names and numbers up. I had some very important numbers and i need help of how i can get them back fast and why it has done this? I didn't update my cotacts to icloud so how can i get them back Please Help ME

IPhone problem with updating?

My last 4s broke 4 days ago and my new one came in the mail today, every time I keep trying to update it, it won't got all the way through and cancel. It was just about to finish at 2 minutes after waiting almost 3 hours, and it canceled. What can I do to update it quicker? Also, how do I get the count of contacts when like you go to contacts and at the very bottom there's a count? It bugs me without it there. How do you get it on?

IPhone 3GS Battery Problems?

In april this year my IPhone 3GS has been randomly turning off when i do multiple thing and when I try and turn it on, it won't really turn on without it being plugged into the charger. I forgot to mention about 1wk before this started happening, i dropped my IPhone and it only has a little crack on the top left corner.
This problem has been really annoying me so I went into Apple at Carindale and told them about my situation. They said that I would need to backup and update the phone to see if that would work.

So this morning I did the update with no problems and it started working normally. 2 hours after using the phone after the update my phone was still on 100% battery life. I thought that was a little bit weird because i was using facebook, instagram and games and I thought the battery percentage would be down to about 70%.So I turned off the IPhone and see what would happen when I try and turn it on. Half way when I was turning it on, it decides to turn off. I plug it into the charger and It decides to turn on. Then I discovered something. When I turned it off, it was 100% but when I turned it back on it was down to 82% means it's not showing on my IPhone the right percentage, its just showing the percentage when it as lastly changed and it would stay at that percentage. I went online to see if anyone had the same problem and I found someone saying to reset your settings in the ph, so I did that and it has kinda been ok so far, but just had one turn off.

Just before I started typing thi question, I turn it off and back on and see what happens, I had no problems and now the battery percentage is starting to down but really slowly. But i'm not too sure if it will be like this for long.

What do I do? Is there anything else I could do? I was thinking of taking it into apple once again or maybe get a new IPhone 3GS battery.

How much will an iphone 4 cost if my contract is up?

My 2 year plan is up(verizon) in a few months and i'm elligable for an upgrade. I want an iphone 4 cuz i heard the price has gone way down since the 5 came out. Some one told me that if you have an upgrade, its free.i've also heard that its 100 dollars… Anyone know!

IPhone 4 sometimes randomly dies?

It doesn't do this often (thankfully), but sometimes my iPhone randomly dies or loses a lot of battery for no reason. It will go from 70% to 40%, or sometimes 30% to 0%, when I'm not doing anything on it. I always turn off my apps after I use them, so nothing's on, and I rarely use Wi-Fi. Should I get my phone checked out?