I have put my iphone simcard into a nokia lumia 520, now I have no contacts etc. How can I retreive them?

Question

Hi. I have been having problems with my iphone 4s ios 6.?? heating up alot, draining the battery fast. It goes down to about 20% before half the day is over. I still have 4GB left (from a 64GB iphone) and don't have anything functioning, (other than check my emails occasionally and txt). It is also having problems deleting emails. I push edit, then touch the dot next to the emails so I can select which ones to delete, but then the dots all disappear and the editing function goes away. It just goes back to inbox. So I have got a Nokia Lumia phone to try out until I can try and fix those problems. But I have put the sim in it, and now I have no contacts, notes or photos or anything. I backed up my iphone to my itunes on my laptop last night, because I was told to try and do and backup and restore on my iphone 4s, that maybe that would solve the problem. I can't see how it would stop it heating up. So I backed it up, but didn't restore it as I didn't want to wipe everything off my iphone, and it said I had to update to ios 7 in order to restore it. I have read alot of bad stuff about putting ios 7 on iphone 4s, so I don't want to update it. Is there a way I can go to the backup somewhere on my laptop to find all that information? As I had contacts and notes stored on my iphone that I didn't have written down anywhere else, which I need. Now I don't have them. Any help would be appreciated. Thanks.

Answer 1

what I meant about "dont have anything functioning", I didnt mean the phone isn't working. I meant that I have the phone on standby all day. Just use it to check my emails, & fb messenger, thats about it, yet it still drains the battery. I do sync/backup everything to my itunes, most recently was last night. Can I not retreive it somehow so it can be put on the nokia phone? Or so I can at least see the contacts, notes, photos etc on my laptop (wherever the backup data is)? Then just copy it onto the nokia phone? I have also noticed that even going into my facebook messages, it doesnt have the photos that were sent and received whilst I was using my iphone. I thought at least fb would keep them.
From what I mostly read about updating it, alot of the apps dont properly function with the ios 7, as it is made for the iphone 5. People have written that it slows their phones down alot, and the phones can take minutes to dial a call. I prefer not to take that risk and stuff my phone up. At least at the moment its just overheating, the battery is dying fast, and its not deleting emails sometimes. Hope this is of some help.