Why my Iphone3g looses its Tmobile signal?

Hi, I recently purchased a used Iphone 3g, but my Tmobile signal drops easily. I live in an area where there are not problems with signals. Phone calls drops easily when using my Iphone 3g, and when I'm driving, I get a no signal icon. The phone configuration is right. Can someone give a clue of what could the problem be, and advise.

Problems Syncing iPhone (Says it needs more space when it doesn't)?

I've just sorted out moving all my music over onto my new laptop and I'm trying to sync my iPhone to it for the first time but iTunes is telling me that it can't sync because it needs more space.

The bar at the bottom of iTunes when I'm selecting music and apps etc to put on my phone says there's 2.33gb of space on there but when I press sync an error message comes up saying it needs an additional 5.43gb of space to move all the selected items over. I've tried deselecting some items but all that happens is that iTunes tells me slightly less space is needed.

Any help would be much appreciated, I can't find this problem online anywhere and I can't think of any reason why it would be happening.

Would texting during a movie get me kicked out?

I'm going to see This Is Us with my friends today, &obviously I'm going to bring my phone. Would it be okay to still use it occasionally during the movie if my iPhone's brightness is turned All the way down and my phone is completely silenced?

If you're wondering why I would want to use my phone in the theater in the first place, I have pretty bad anxiety, and sometimes my phone helps distract me from that and if I wanted to just text my mom really quick and check in every once in a while that would make me feel less anxious.

Also, do you think if I turned the brightness level All the way down on my iPhone 4, people owuld still notice that I'm on it? I don't want to be rude to the other people watching and I want to make sure that this wouldn't distract them.

How to get rid of the ads that pop up everywhere?

I was doing my summer Spanish homework, listening to a song on this page: http://zachary-jones.com/zambombazo/cancion-teacher-teacher-campamento-de-verano/. Suddenly, an annoying Ask.com ad pops up on the bottom right corner, with something like: "Are you searching for ---? Click here!" It's long, rectangular, white with blue letters. Has anyone else seen ads like this? But look at this: the website clearly reads: "Our ad-free website is entirely supported by readers like you. If you have enjoyed any of our free activities this year, such as our numerous music activities, please support our site by purchasing our special-edition Summer Spanish 2013 eBook for $4.95. We greatly appreciate your support!"
So these ads are definitely not part of the websites I visit. I also get pop-ups with red "x" buttons, but Ad-block blocks the main body, which is usually casino games. Also, taller and narrower Ask ads pop-up on the right, along with white rectangles with black text.
On http://www.nestoralvaro.com/blog/2011/11/18/removing-ads-iframes/, I got a bookmark that gets rid of I-Frame ads, but sometimes other I-Frame elements on the page are also obscured. For example, on the Zachary-Jones page, the bookmark also removed the audio I was listening to.
I use Google Chrome, have Windows 8, and our Wi-fi is provided by Verizon. When I use hot-spot from an iPhone, I have no problem with these ads.

Added (1). Sometimes, when I click on a link, it redirects me to a page that says: "This link has expired, redirecting… " and there's an orange rectangle in the middle of the screen. When that happens, it usually leads me to a random website, but I usually click the back button, try the link again, and find that it works! What's up with that?

Added (2). (I already have Ad-block, which doesn't block these ads.)

Added (3). I couldn't find anything suspicious in my programs, which doesn't mean there isn't anything, but I'm suspicious about my Wi-fi provider because when I use iPhone hotspot, I don't have this problem. Has anyone ever heard of piggy-backing ads on Wi-fi? Or maybe it's a virus?

Why can't my computer find my router?

Basically my computer can't find my router and my router is a Westell - Model 7500. I can connect to my Wi-Fi on my iPhone but not my computer. Anybody know how to fix this?

How long does it take for iPhone to get service?

I have just got a new contract for the iPhone 5 via uswitch online. It's a website many of my friends and family have used for cheaper tariffs. My provider is with Vodafone, I have set up my phone a couple hours ago and it's still saying no service. I have received an email from the website in the morning stating that my delivery would be on its way and the sim may not yet be activated, that they are working on it and can take up to 24 hours. I'm just seeing if this can take this long?

I was going to contact Vodafone myself but the email also says please do not contact the network as they are aware. I've never thought a phone could take so long:/

Is my Christmas list too pricey?

I know it's really early but my parents buy early

a new bed comforter $60
body pillow $11
4 iPhone cases $15
2 black pillows $16
desk $88
desk chair $44

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