My iPhone 4s isn't picking up Wi-Fi?

My iPhone got dropped a while back but it got fixed and now it isn't picking up Wi-Fi unless I'm less then 1 meter away from our Wi-Fi box? Is there anything I can do to fix this or will I have to reset my whole iPhone?

Can't download apps on iphone 4?

I gave the phone to my kid and there's about 5 gig of space available. Its 8gig btw.

but he tried to download a 1.3 gig game and it says not enough space available.

Where could be the glich?

How to enter cydia safe mode ios 7?

My iphone 4 is stuck in a bootloop. Its jailbroken with pangu, and its ios 7.1. I was intalling a cydia tweak, but then it said there wasn't any free space on the device. Then cydia had a button that said reeboot device. I clicked the button, and my iphone turned off. Then it showed the apple logo, but after a while, it turns off then on, and starts to reboot again. And its been doing this for an hour now. I tried cydia safe mode with the volume button, but it never entered safe mode. Is there any other way to enter safe mode? I really don't want to have to re-jailbreak my iphone.

What's a good iPhone passoword?

Hi, I need a really good password that know one will guess. I have a sister that always gets my password. I don't know how?! Someone help!