How to track locations of an iPhone?

Lets say I had a phone number of someone and wanted to arrange a chance encounter, is there anyway a normal civilian non hacker can figure out where they are just based off their cellphone? Without their knowledge obviously, I know there are apps for it with if we both use it, but I'd rather they not know.

Background story:
we're playing a game called water gun ninja (you all put your names in a hat, draw a name and have to get them with a water gun and take their targets name and get then till there's one left standing, and I'm trying to find my target and catch them unaware like in a grocery store or something)

How to set up Microsoft Office Outlook on my iPhone?

I recently started a new job and the company uses Microsoft Office Outlook 2007. I have an iPhone 4S, and I wanted to have that email address setup on my phone. I have no idea how to do this and where to find certain information (Incoming and outgoing server name, user name, and other blanks). I basically need a beginners guide to do this.

Iphone 5, Samsung S 4, or HTC one?

I need help! I can't decided! I have a samsung behold that i adore but its starting to croak on me… I have an Ipad so i know apple and would like the familiarity of getting the 5 but sometimes the flash things bugs… My sis just got the S3 and i played with it for a bit and it seems so confusing, she loves it. Do i just need more time with it to get used to it? The HTC i haven't touched, never touched any HTC product…
Also tmobile or sprint… I have tmobile but it hurts me to fork over 600+ for a phone, hate that they don't do contracts anymore! My sis is with sprint and she never gets internet service in my house on her phone… I heard i can hook up my phone with my own Wi-Fi too, is this true? Will my 4+ year old router work for that?

My iphone 4 won't send or receive any type of message?

My iphone randomly stopped being able to send texts or imessages entirely. It can't receive them either. The message app is crashing alot. I've tried to delete all my messages to see if that would help and they all just reappeared. I've reset all settings. I've reset network settings. I've done a hard reset. I've done everything imaginable. For a little while yesterday it was working again. But it won't work anymore

How to fix an old water damaged iPhone 4?

My dad dropped his phone in the lake like a year ago, and since then it hasn't been able to work but last night i plugged it in to the computer and the apple logo just came on and then disappeared then came back.

Is there any way that I could fix it without paying any money or anything?

Will applecare plus send me a VZW iphone?

I have an AT&T iPhone 4S with apple care plus. The business I work at pays for the service. They are switching over to VZW. I'm needing to know how to get my iphone switched to them without having to pay for a brand new VZW phone. I know applecare can do this. They switched my Tellus iphone software over to AT&T software when I first started this job. I just can't figure out how or what they did to tell apple. And apple is saying my AT&T iphone will work on Verizon, just to pop the SIM card in. I have tried and it will not work. It says no service and doesn't activate. I'm willing to pay the $50 applecare fee.