Why won't my iphone 4 connect to the Wi-Fi?

I recently broke my iPhone 4 screen and replaced it myself. When i replaced it, i'm pretty sure i put everything back together right, but my iphone hasn't been able to connect with my home Wi-Fi since. The Wi-Fi works perfectly fine, the rest of my family can connect to it with no problem, its just my phone. I've tried everything… But my phone still won't connect to the home Wi-Fi. I turned on the Wi-Fi but no networks are showing up and i did turn on ask to join networks. Can anybody please tell me what's wrong with my phone? Did i put my phone back together wrong? I also lost my sim card but i don't think that has to do with the Wi-Fi not connecting.

Downgrade iOS 7 or jailbreak on iphone 4s?

Downgrade iOS 7 or jailbreak on iphone 4s?

just wondering if there's something that allows you to downgrade yet,
or jailbreak iOS 7 on iphone 4s, the more information the better.

What would be a good Christmas gift that I could put on my list?

Hi i'm a 17 year old boy still in high school, and I usually do the traditional thing, I don't believe in santa claus but I still write Christmas lists, not for santa but for my parents lol. But anyway, every year it gets hard for me on what I want. See me as I get older i'm starting to have the urge tht I don't want anything for Christmas, but its a weak feeling, however I still want something for Christmas, at least 6 gifts under the tree. And ill tell you alittle bit about me so you could recommend a kid my age on what would be awesome. Ok well I grew out of video games when I was 15, I'm not into ipods or ipad, or iphones, cuz it don't interest me. But I love remote control stuff, and its mostly airplanes, and eh maybe alittle bit of cars. I love old stuff, like for instance I enjoy the 1950s retro transistor radios, and the old fashion telephones, but the thing is, I have these appliances in my room and household. But see heres a type of gift I want, I want something that I can use everyday, or have fun with, like for instance something tht I can interact with. It can be anything, as long as its something I can interact with, hell I might get a laptop cuz I need one, and a couple remote control things. But it would also help if you could recommend other suggestions, if so, I will vote for best answer and ill vote for all of you tht commented.

Can i call with an iphone with no sim? And is it legal?

@@@@@@@@@Please READ @@@@@@@@@
I have an iphone 4 in white and when i bought it, it had no place for me to insert the sim ( there were no holes gaps or slots) the box says iphone4s however its a normal iphone 4.
i got it from usa.

Will an unlocked Verizon iPhone work with AT&T?

I'm getting an unlocked iPhone from another carrier and plugging in my AT&T sim card to avoid having to pay for a data plan. All I need is Wi-Fi. If I get an unlocked verizon iPhone, will it work with att? I have heard mixed answers. Some say it is CMDA format and att only works with GSM phones. But, i heard all iPhones are gsm capable regardless of verizon carrier?

How to fix my iPhone 4s Front camera?

I recently got my screen replaced because it cracked, i don't know if that is it but… And what it does is when I open my camera app up, it automatically goes to the back camera and if I try to switch it, it just freezes… Also on snapchat/instagram there's no camera flip button, please help!