How to resolve the issue of poor quality incoming or outgoing calls on Samsung Galaxy S II?
Your Samsung Galaxy S II will automatically detects the strongest radio signal, and can select it to maintain normal service.
Basically, the incoming or outgoing call quality is depending on radio signal level measured by the Samsung Galaxy S II.
If you are experiencing poor quality incoming or outgoing calls, please refer to the following information, to resolve this issue.
1. From the main (‘home’ or ‘idle’) screen display of your Samsung Galaxy S II:
The name of the service provider you are currently connected with should be displayed on the Samsung Galaxy S II main screen, and this should match with the name of your Network Provider (unless you are roaming).
2. The Samsung Galaxy S II can receive incoming calls, and make outgoing calls with any number of antenna bars. However to obtain a better quality incoming or outgoing call, more than 1 to 2 antenna bars showing are recommended.
3. Please ensure that the handset’s network mode is set to Automatic, as outlined below:
a) Select main Menu.
b) Select Settings.
c) Select Network settings.
d) Select Network.
e) Select Automatic.
4. If you are still encountering the same issues, then power off and on the Samsung Galaxy S II.
5. If the above steps does not eradicate the problems, then the issue may be hardware-related.
To check this, place Samsung Galaxy S II in loudspeaker mode, or attach a headset whilst making a call.