To record phone calls on a CITYCALL I8550, you can try the following methods:
Use a built-in call recording feature: Some phones have a built-in call recording feature that you can use to record phone calls. To use this feature, open the Phone app, start a call, and then tap the "Record" button on the screen. The call will be recorded and saved to your phone's memory.
Use a third-party call recording app: There are many call recording apps available on the Google Play Store that you can use to record phone calls on your CITYCALL I8550. Some popular options include Automatic Call Recorder, Call Recorder – ACR, and Call Recorder – Cube ACR.
Use a voice recorder app: If your CITYCALL I8550 doesn't have a built-in call recording feature or you don't want to use a third-party app, you can use a voice recorder app to manually record phone calls. To do this, start the voice recorder app and place the phone on speaker mode before starting the call. The audio from the call will be recorded and saved to your phone's memory.
Note: In some countries, it is illegal to record phone calls without the consent of the other party. It is your responsibility to ensure that you are complying with the laws in your jurisdiction.