Iphone 5 Wi-Fi connect problem?

I've been hooked up to my combo of a Comcast cable modem arris and Linksys wireless router for the last 1.5 years with no problems. Then last Saturday, my wireless connection started slowing and not displaying webpages and sometimes disconnecting me from my home wireless network completely every 20-30 seconds. Sometimes it automatically re-establishes connection and sometimes not. It's now a week later and I can't figure out what's going on.

after some digging i reached on conclusion, recently i changed my comcast modem.again same problem no accessing to internet and then i restart my linksys router and all computers are able to access the internet but iphone unble to access the internet joined successfully but do not have internet access

any suggestions, please!

How much can i sell ps vita for?

If i sell it to gamestop how much will i get. Its in great condition, barely been used and comes with a 8 gb memory card. Also if i include/ don't include a charger how much will it be? And will the take it with it uncharged because i don't have a charger. I'm planning on buying an iphone with thr money

Should I upgrade to iOS 7.0.3?

I have the iPhone 5 and a couple of weeks ago I got an update for the iOS 7.0.3, was wondering if it's safe and if it is worth upgrading? I have been doing a lot of research and watched a lot of videos on You Tube, people say they love it and people say they hate it. I think it looks cool, some features are nice and a few I'm not too sure about. Is this version still buggy and wait to see if another version comes out? Or should I go ahead and upgrade?

Iphone 4 won't download new apps?

I have an iphone 4 with ios 7 and it keeps on saying "unable to connect to itunes store, try again" whenever I try downloading an app. I know this is not because of ios 7 because it wasn't working even when I did have ios 6. I know my password is right because it works on other things. I have tried changing my password too but that does nothing. A little help please on how to solve this problem?

My iphone 5 doesn't have ANY service no matter where I go

Today I was just downstairs in the living room then then I noticed that I had no service, I thought it was just a bad spot then moved to another room upstairs and it still wasn't working as well as my internet. Please help.

Added (1). It is not my service provider as my family members have the same provider and theirs is working fine.

Things I have tried:
Hard reset.
Turning off and back on.
turning the airplane mode on and off.

IPhone space being used up when I'm not doing anything?

So, I just checked my usage thing, 'cause my dad says that my phon is the one that's the problem, when everyone in my family has tons of games on their phones and thousands of pictures (literally) and I only have solitaire and like 180 pictures, I just deleted all my texts too, but it says that texts has used up 5 gigabytes?! And music has only used two! (I have at least 800 songs and iCloud won't let me get rid of these weird songs that keep piping up that I don't know) how do I get rid of whatever is making my texts (which I rarely use as well) use so much space and the random music in iCloud, thank you.

How to save one day free app on iPhone without Wi-Fi?

There's an app that is free for one day but I don't have access to Wi-Fi. It's too big to download it with cellular data. If I tried to download it, will it remain free for me? Or is there a way to "buy" it for free now and download later?

Which tablet is best for me? - 1

I'm a student in 10th grade, and am buying a tablet to help with typing notes in school. I have an iPhone 5, but wanted something to play games on, watch videos, bring on long- car drives, browse the web, and as I mentioned type notes. I'm thinking of buying the iPad Air, iPad Mini, Surface 2 or Samsung Galaxy Tab 10.