To check your CITYCALL I8550 number in the settings of your Android phone, follow these steps:
Open the Settings app on your CITYCALL I8550. This app is typically represented by a gear icon.
Scroll down and tap on the "About phone" or "About device" option.
Scroll down and tap on the "Status" or "Phone identity" option.
Your phone number should be displayed in the "My phone number" or "Phone number" fields.
If you are unable to find your phone number using these steps, you may want to try checking the SIM card itself. Some SIM cards have the phone number printed on them, so you may be able to find your phone number by removing the SIM card from your phone and looking at the card.
It's important to note that the specific steps you need to follow may vary depending on your phone's model and operating system. If you are having trouble finding your phone number, you may want to consult the user manual or online resources for more detailed instructions.