Why can I only connect to Wi-Fi when I'm in one specific room?

I have the iPhone 4 iOS 7.0.4. I've bought it used through somebody. But ever since I bought it I was only able to connect to Wi-Fi in one room in my house which is the room my Wi-Fi is set up in. If I go into any other room it will slowly get weaker signal and disconnect itself from the Wi-Fi. But everyone one else in my house is able to connect to the same Wi-Fi all throughout the house. I've tried resetting it but it didn't do anything.

Wi-Fi signal will be weakened especially when you pass thourgh wall or door. If setting your phone couldn't work, maybe you can try to search how to extend Wi-Fi range. I found one blog like that, mywifirouter.me/blog/how-to-extend-Wi-Fi-… Hope it will help

  • Why is my iphone 4s sending texts to everyone except one person in specific? I have an iPhone 4S, I've been texting a few people today but there's this one person in specific that my phone doesn't let my message go through to them? It just randomly happened in the middle of one of our conversations when I tried to reply but all it says is "message send failure." I didn't want to, but I deleted our whole message history and still nothing.
  • Why does only one speaker work when I connect my iphone to my Hi Fi system? I brought a brand new Hi Fi system today, tested in the shop with my iPhone connected and it worked fine, both speakers working. I tried it when I got home and now only one speaker works when my iPhone is connected using the audio in cable. Both speakers work fine when a CD is playing, why is this happening?
  • One laptop can connect to our home Wi-Fi network but no other devices can connect? We recently set up a wireless internet connection in our house. One laptop can connect to it (the one I'm currently on) but no other devices can connect to it. It says our "Network Security Key" is mismatched. I have tried typing in all the different codes on both the router and modem on both our second laptop and an iPhone 5. How can I fix this?
  • No wi-fi in one room of my house? So, I recently got my sister's old iPhone 4s, since she upgraded to the 5s. The wi-fi usually works fine, but it never works in my bedroom. My laptop, my sister's laptop, the iPad, iPod, and all the other iPhones have wi-fi in this room, but it's just my iPhone that doesn't get wi-fi. Does anyone know how I can get wi-fi in here? Everyone else gets wi-fi in this bedroom, just not me.