I'm using someone's Wi-Fi, can they search my history?

I'm using my iPhone and old phone to connect to my homes secured Wi-Fi. I always clear search history on my phone.

But can my family use their laptop and find out what I've been searching online from my phone connected to my family's Wi-Fi? Even though I clear search history on my phone?

How to get an early upgrade with Sprint?

I'm sometimes too cheap, I decided when I switched to Sprint to get the free phone, iPhone 4 16 gb. It's been over a year and I haven't had any serious problems. But my phone is so slow. It hasn't always been slow, but it seems to slow down more and more everyday.

Does anyone know if there's any way to get an early upgrade with Sprint without it costing an arm and a leg? I'm not eligible for an upgrade for another 9 months, and I don't know if I can handle that phone for 9 more months. I also know that I can add a line to my plan, I don't want to do that either.

Having microphone issues when using my iPhone 5s

I just got my iPhone 5s pretty recently. I would say mid November, 2013.It was working fine until about 3 weeks ago. When I was trying to make a vine I noticed that the sound was muffled like a bunch of static and you could hardly hear my voice in the background. After about a week of that it went away for a week or so but now it is back. I've figured out that the microphone is only having troubles while I'm recording on the FRONT facing camera. This seems very bizarre to me. I would like to know if there's anything that I can do personally before I take it to the store. We don't have an apple store closer than 2 hours away and the people at the Verizon store by my house are never helpful. Any answer helps since I'm not very tech savvy.

Do I need to change the Iphone 4 batttery?

I took my Iphone 4 to a shop to fix the lcd yesterday, no i just (very foolishly() dropped it about a distance of less than a foot and now I can't turn my phone on. If i connect it to power the apple logo shows but it goes no further than that, and as soon as i disconnect it it very abruptly turns off. Is it possible that the battery has become disconnected and if so how do i reconnect replace it?

IPhone battery draining quickly?

I have an iPhone 5 and the battery seems to be draining quickly. I left it at home this morning with 100% charge and when I came home 6 hours later it had gone down to 65% and there was no apps running in the background, my phone has only been doing this for the past few days do any help will be appreciated.

Added (1). The sad individual: I've had the phone for about 8 months now

Why can't I play youtube videos on iPhone 4s?

Youtube in safari and on the app no videos will load. It always say "can't load" in safari and playback error in the app. I can do anything else, I'm asking this from the iphone that it won't work on. So internet isn't the problem.

Why do songs get deleted from my iphone when i sync it to my itunes library?

Everytime i sync my iphone (5) to my itunes library, all the songs i had just recently bought on my iphone get deleted and if i try to re-purchase it on itunes it just says "purchased." Somtimes i will even try to re-purchase it from my laptop and even though the purchased song it in my library, it doesn't transfer to my iphone.

How much does it cost to unlock an iphone 4?

Recently was given an iPhone 4 (not 4s) and it won't accept my 3 mobile micro-sim how much would it cost to get it working on my 3 contract?

Added (1). To the guy who said "search the internet" that's what i did… And i landed here >.>