How to improve signal strength in iPhone 4S?

I have my new iPhone 3G for a year till now. It is only recently that I found its signal strength to be getting weaker and weaker. How this issue can be fixed?

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For improving the signal strength in iPhone, users will have to;

• First turn on the iPhone if turned off
• Then take a look at its signal strength
• After that, navigate towards the ‘Settings’ option
• Then choose the tab denoted as ‘General’
• Select ‘Network’
• Then slide it towards the ‘Off’ position

Now check in the home screen, the signal strength will be improved

Hello friends,

they are few things to improve ur signal strength in iphone4

1.basically u have reset ur iphone4, then go to settings ,click general, then click reset and in that u wil get reset network settings and by clicking that it resets ur iphone4

2.then remove ur sim card and put it back again

3. then in summary click the reset button which wil reset ur iphone4

4. then just attach a dangling cable (USB) to computer

5. signal strength increases

6.they are few gadgets to increase signal strength

One of them is: wireless extenders zbost its a dual band cell phone signal booster....

Hello Friend,

The Signal Strength some times affected by the outer covers that you fixed because It may prevent the antenna from receiving the signals.
So Try the phone barely and
If the Problem continues there may be problem in Network IC
So It is better to go for a Service Centre.