My iPhone 4 won't connect to Wi-Fi unless I'm standing next to a router?

I just bought an iPhone 4 (ios 6) from a guy and when I got it, everything works perfectly fine except for the Wi-Fi. My iphone won't connect to Wi-Fi unless I'm standing next to my wireless router (located in the living room) and when I walk to my room, I lose signal and then the internet won't work anymore. I have an ipod touch too, and the Wi-Fi works just fine (its 4 bars when i go to my room ) my laptops work fine too. It's just my iphone that doesn't work. How can I fix it? I can't get the iphone replaced because I don't have a warranty and I didn't buy it from the Apple store.

Iphone 5? Convince me to buy it

Well i want a Iphone 5. Not sure which color to choose… And want to know some good reasons to buy it to convince my dad to get it for me? Very good reasons that will make you get this phone than any other phone in the market today!

Halo 4 Smartglass won't work?

Just wondering how to make smartglass work for Halo 4. I have the smartglass app on my iPhone 4S but every time I go into Halo 4 it says no smartglass features available for this title. Is there any smartglass features for halo 4? If so how does it work?

My iphone keeps sending imessages as a texts?

My iphone keeps sending imessages as a texts even thought I unchecked the box in settings saying "if imessage fails, send as a text"… What should I do? When I start typing it shows blue bubble but while trying to send the message it turns green and sends it as a text and this is getting quite expensive from Slovakia to Canada. Any ideas?

How hard would it be to install a new radio in my car?

I have a 2001 corolla that has a pioneer radio with a cd player (So I'm thinking it is not the original tape deck one) but want to replace it with a different pioneer radio in the truck I use to drive because it is newer and actually has a AUX port and USB so I can use my iphone and charge it.

They appear to be the same exact size so I decided to take off the face plate and the one in my car uses a plug in that is on the left and the one in the truck (the one I want) uses a plug in that is in the middle. So therefore I can't just switch them.

What I'm wondering is, if I unscrew them and take out the wires and switch them out would it be that easy? Since their both aftermarket stereos and both made by pioneer I'm hoping it is just a simple match up the cables. At the same time I don't know.

I don't want to take it to someone to have it done. There's only one place I know of that does this but when I had the radio installed in the truck it ended up costing me $300 and the radio was only $100. Charged me for some small cable $70 (later found it on amazon for $10) and like $70 for him to install it. On top of that it took him 2 1/2 hours because he kept stopping and going to other peoples cars and installing radios and talked to this 16 year old kid about speakers for an hour and the kid didn't even end up buying anything. So his place is the only place who does it that I or anyone I know knows of. So I would lke to do it my self.

Can anyone tell me if it is just as simple as taking the radio out and putting in the other and matching up the cables? Or is mutch more complicated? Thanks

Also, the model in the car if it helps is a DEH-14
The Truck is DEH-3200UB

Can i downgrade my iphone 4s?

Hey so i'm wondering if there's any way to jailbreak my iphone 4s at this point. I have the latest version of the software which is ios 6.0.1 and if i could jailbreak it does it have to be downgraded if so how could i downgrade it

Is fedex estimated delivery time accurate?

I ordered an iPhone online and I used standard overnight shipping. The estimated delivery said December 24, at 3pm. Whenever I bought a phone it came earlier in time. Usaully when I got my phone it came around 10:00. Also, is the phone going to come earlier?