Losing Wi-Fi connection on Iphone 4?

Today I received my new IPhone 4.It works great but for some reason it loses Wi-Fi. I go to the settings and hook up to the wi-fi. For a few minutes it works nice but after about 10 minutes it will disconnect from the wi-fi and go back to 3G. My main question is can I fix it so it stays connected to the Wi-Fi and is being on the 3G network costing us money? I really don't care but if it's costing money to use the 3G internet then I will be concerned, plus it's preety annoying to have to keep telling my phone I want to use the home wi-fi. Any suggestions?

ITunes doubled and tripled my songs and I can't delete them?

I was trying to delete some of my songs on my itunes account to clear out space on my phone, so I unchecked a bunch on my iTunes library on my computer. When I plugged my iPhone into the computer, it doubled and tripled almost all of the songs on my phone, but not actually in my iTunes library. With the new iTunes update it brings you to a whole different list of options for music on your iPhone and its really hard to figure out. I can delete songs in my library, but not in the music on my phone. But like I said, the music in my library is still fine. I really don't know what to do and now there's no space on my phone.

My iphone 5 is draining to fast?

I just got the iPhone 5 last month and I noticed its not lasting me a whole day. I was texting and on twitter Facebook and it died in 4 hours! It also looses battery when its on sleep mode for example at night I won't charge if its 50% or higher, so yesterday i left at 57% and i woke with 50%, i went to sleep 10 pm and woke up at 6 am, oh n the Bluetooth and data was off. Any tips?

Best glue for decoden cases?

So I'm making iPhone cases, and I'm using little resin pieces and some small patches. I glue the pieces to the plain iphone case. I don't want to use the "whipped cream" kind of glue because that's just too much for me, not the style I want. I used hot glue for the first case I made and they stayed on pretty well but after a while the pieces started moving around and eventually fell off. I want a glue that'll hold up extremely well because I will be selling these.
What other type of glue is good for this kind of craft? I'm not going to use Krazy Glue because it really doesn't work.

Can you jailbreak iPhone 5 6.0.1?

My iPhone 5 is on the IOS 6.0.1 and I wanted to know if there's a jailbreak for it? I would more like a untethered jailbreak but if you can only get a tethered one that is fine.