How to search information on my iPhone?

When new, my iPhone 4 had a "Search" function enabling me to search my entire phone for say a name. Every instance of that name in the phone would be found, whether it be in Messages, Contacts, emails, etc. In effect, the phone had an indexing function and a search function to access the indexing. Subsequent software updates got rid of this. I now have an iPhone 5C. How do I search on that?

Is it worth me upgrading the iPhone 4S to a 5S?

I would like to know everything that the 5S has to offer compared to the 4S and if it is worth me upgrading?

I currently have a black 4S 16GB which I purchased in 2011 and I'm keen on the white & silver 5S.

Apps aren't installing or updating on my iPhone?

It just says 'waiting' then will pop up with 'Facebook/Instagram or whatever, can't download at this time' and gives me the option of 'done' or 'try again'.
I haven't had this problem in the past.
I don't have Wi-Fi- only 3G
I have signal.

Anything i can do?

Ios 7 won't install on iphone4?

I have a iphone 4 and the update has been on my phone for two months
Now and I've deleted almost all my pictures and checked all my apps and still says something about more memory. And i have no music downloaded. Any advice?

Iphone/ipod game center

I have a game on my ipod that i play all the time but my ipod is starting to not work right. The game is in game center so i would like to transfer my game from my ipod 4 to my iphone 4 through game center so i don't lose anything. I can't seem to figure it out tho. What do i need to do?

How to make a new Apple ID, While getting a new number?

I'm changing my phone number and I have a Iphone 4S. (Verizon)
I want to change my number and i want to Factory reset my phone so i can start all over with a new number and nothing on the phone and nothing linked to my Apple ID

-How to make a new apple ID?
-How to save the Pictures and Videos from my phone to my Flashdrive?
-How to put them back on my device once i have the new Apple ID and Phone number?