There are a few steps you can try to increase the touch sensitivity on your CITYCALL I8550:
Check for any software updates and install them. Sometimes, touch sensitivity issues can be fixed with a software update.
Make sure your phone's screen is clean and free of any dirt or debris. A dirty screen can interfere with the sensitivity of the touch screen.
Try calibrating the touch screen. On most phones, you can do this by going to the "Settings" menu and looking for a "Touch screen calibration" option.
If your phone has a case or screen protector, make sure it is not interfering with the touch screen. Remove the case or screen protector and see if the touch sensitivity improves.
Some phones have a "touch sensitivity" setting that you can adjust. You can usually find this in the "Settings" menu under "Display" or "Advanced settings."
If none of these steps improve the touch sensitivity on your CITYCALL I8550, it is possible that the issue may be hardware-related. In this case, you may need to bring your phone to a repair shop or contact the manufacturer for assistance.
