Do you honestly need a screen protector for your iPhone?

I just took mine off, because it kept getting air bubbles in it, but do you think ill get scratches on it? For not having my screen protector on? I mean does it really help to have a thin screen protector on your phone? Someone please answer.

Why can't my iPhone 4 can't find Wi-Fi?

Okay, so my brother had an old iPhone 4 that was broken (screen cracked, home & lock button don't work, etc). He got it fixed for $140 and gave it to me and now its working brand new. However there's one problem. My iPhone can't find any wi-fi unless it is close to the router. For example, the router to my house is in my room, I can only use my internet's wi-fi on my phone in that area, I can't use it in my living or in my sister's room or in the kitchen. It's the same everywhere else. I have to be near the router to access wi-fi otherwise my phone goes to 3G internet. I don't ALWAYS want to use 3G because it wastes my data plan. Please someone help me. There has to be a reason for this. It will mean a lot.

Thank you.

P.S It's an iPhone 4, White, 16GB with iOS 6.1.3

RIM BlackBerry Bold 9900 Or Apple iPhone 4S?

Its time for an upgrade again and I need to make a choice between the two phone.
I recently got to jailbreak an oldish iPhone I received from my father and its great! But I'm a bit worried. My current phone is the BlackBerry 9300 and I have BIS(BlackBerry Internet Service) on it which means uncapped internet. And after two year I have come to adore my uncapped because if I want to find out something or just need some songs or videos my uncapped never let me down.
The iPhone I would be getting an amount of data, so then i won't be able to go online all the time.
So I'm waffled about which one I should take…
I love both phones.
The BlackBerry Bold 9900 I wanted for a long time now but since I recently started working on my iPhone I loved every second of it.

IPhone5 broken lock button, warranty expired?

My iphone5 lock button doesn't work. I purchased my iphone 5 on march 2012 so it is passed the 1 year warranty.

How much will it cost to get it fixed at my local apple store?
How long does it take?

JailBreak For iPhone4s 6.1.3?

I just got a new iPhone from a friend of mine, and it already had the update 6.1.3.
Is there a site where I can jailbreak it with this update?
and if not, when will one come out?

What do I do when my ios 7 expires?

I'm not a registered developer and I don't have a udid but I got the ios 7 free through a tutorial on youtube.yesterday, my phone shut off and then when I turned it back on, it tells me to 'slide to unlock' then brings me straight to a page that says activation error - this device is not registered as part of the iPhone developer program. If you are a member, please register at http://developer.apple.com/...om/iphone/. When I go to the website, it says they are rebuilding because an intruder has gotten into the system and they can't promise that personal information has not been accessed. The ios 7 update is still in effect on my phone because I the screen still looks that way. I think that it just expired. Is it possible this "intruder" has my information? And will I have to wait for that website to reopen before I can use my phone again? If I reupdate to the latest released version for my iphone (which would be 6.4.1 I think) then will all my stuff- contacts, messages, etc. Be gone? I know its still on there because I heard my phone do my new email ring twice since this happened. So I know its still there now, I just can't get to it. Please if anyone could answer at least one of these questions, that would be a huge help.

When should I sell my iphone 5s I'm getting?

I'm going to get the iphone 5s As soon as possible when it's released (have contract that needs to be renewed) and then sell it for profit.

When should I sell it on ebay to make the most money?