How to keep apps (that aren't in your iTunes) After updating software on iPhone?

My friend has recently given me his old iPhone 3GS with about 70+ apps all ready on it, all of them awesome. However, I can't download new apps (such as whatsapp, which is essential) and can't get imessage due to the outdated software. I have tried using imtoo iphone back up but whenever I try to put an app on my iPhone that's been ripped from it it says there's a problem with authorisation, presumably because I need authorisation from my friends account (which he's now lost the password to:/). At the moment it seems like my only option is to jailbreak it, unless I can find some software to change the authorisation on these apps. Any suggestions?

Restored iPhone, only some photo stream photos came back?

I restored my iPhone back to factory settings because it was crashing a lot and being weird and the good people at apple told me to do that. Well they did it right in the store for me, and he told me all my photos in my photo stream would come back to phone from iCloud after I signed into my phone with my apple ID, just like my contacts and stuff. Well only 119 of 523 photos that were in my photo stream came back. Any idea why that is? Any way I can still access those photos somehow? They were uploaded to my photo stream before I reset my phone, shouldn't they still be in iCloud somewhere?

Not a huge deal, but I'm annoyed that I was told they would be there and I got a fifth of them back. I don't understand why some would come back and not others. They were all in my photo stream.

Added (1). I just checked that website and there no photos at all. And I know I have some photo streamed right now. I must have just trusted iCloud a little too much. You were very helpful though with that website!

How to change the ringtone one Viber?

I just got the Viber App on my iPhone. And when people ring me. It's a stupid ringtone that is really annoying. Is there any way that I can change it. I've been on settings. And looked on the Viber and iPhone websites to see if I can change it. But I can't seem to find any. So does anyone know how to change the ringtone on Viber?

Getting iphone replaced bad sleep/power button?

I got my iphone 5 around 2 months ago. The sleep/power button doesn't work most of the time, and now I have to press it nearly 10 times for a response. If I took it in to the store, would I get it fixed, or would it be a simple replace? Also (this will sound stupid) would I be able to keep my old iphone, or would they take it away (what do they need with a bad iphone they can't use or sell)?

Weather symbols for the iPhone?

For Dublin Ireland there's a picture of snow flakes (I presume) at the top and rain coming down after? What does it mean?

ITunes won't sync my iPhone?

I have an iPhone 4S, and it is currently updated to the latest software version IOS 6.0.1 and my iTunes is also up to date.

The problem is that every time I try to sync my phone, iTunes just freezes, specifically when it's on Step 3 or Step 4, and I have to unplug my phone for iTunes to unfreeze, but the sync never goes through.

This happened three times so far. After the first time, I forgot what I did to fix it. After the second time, what I did that fixed it was un-clicking "Sync music" under my iPhone's tabs. Then the third time it happened- it started freezing. Right after I added new music to iTunes. I tried un-clicking "sync music" again but it didn't work, and it still freezes on step 3 and 4.

I don't know why it randomly stops working because it works perfectly fine when I sync my iPod.

Other things I tried:
-Closing and opening ITunes
-Restarting my laptop
-Using a command prompt (don't remember what it was but it didn't work)
-Clicking/Unclicking "sync music"
-Unplugging the USB from my laptop
-Updating iTunes
-Updating my phone

None of these methods work for all three times this problem has occurred. And I think it's a problem with either my phone, or iTunes, nothing with my computer.

Can anyone help me? Tell me why iTunes randomly freezes every time I try to sync my phone- works one minute then stops working the other; why iTunes can't sync my phone but can sync my iPod perfectly fine, without freezing at all.

It's really frustrating and I'd like to sync music to my phone without a problem. Any help is appreciated

How to get the do not disturb button on my iphone 4s?

I have an iphone 4s. I didn't download ios 6 because i don't have enough room on my phone. And it is too much of a hassle. I have seen it before in my settings. How can i get the "do not disturb" button back without downloading anything or apps?

Why is my iPhone not getting activated?

I updated the iOS on my iPhone 3GS from 4.1 to 6.1 or something like that. Now when the phone started i reached start-up up to the Wi-Fi network selection screen. After that it a screen appeared telling me to wait while the iPhone is being activated.iTunes is also not showing anything. Then suddenly the iTunes screen says it can't be updated, please try again later. I have tried several times but it's not working.

Itunes Save songs and photos and stuff?

Ok, I've got an Iphone 3gs and lately I format my PC now I can't sync my music to Itunes because I have to delete everything, How can I save them in my computer again?