Your telephone number on this device is the mobile line number assigned to your SIM or eSIM. On an iPhone, open Settings > Phone and check the My Number field; on an Android phone, the device’s own line number is not universally shown in settings, but you can find your Google Account phone number at Settings > Google > Manage your Google Account > Personal info > Phone.
What is my telephone number on this device?
Getting and understanding phone numbers starts with knowing that a single device can store more than one number. The number you want is usually the SIM line number that your carrier assigned to the device. On some phones, this appears in the system settings; on others, it may be hidden or unavailable. The steps below show the exact, verified paths for iPhone and Android, along with the important difference between a device line number and an account recovery number.
Find your number on an iPhone
To find the device’s mobile line number, open Settings and tap Phone. Look for My Number at the top of the screen. If the field shows a number, that is the line number your carrier assigned to the SIM or eSIM. Apple notes that this field appears only if the carrier supports it, so it may be blank even on a working phone.
Your iPhone also stores a separate phone number for your Apple Account. To see it, go to Settings > [your name] > Sign-In & Security. The numbers listed there are used for account sign‑in and account recovery; they are not necessarily the same as the device’s mobile line number.
For cellular-enabled smartwatches, the number is linked to your primary iPhone and can be found in the companion app’s settings, such as the Watch app under My Watch > Cellular.
Find your number on an Android phone
Android does not have a universal, documented path to show the SIM line number in system settings. Instead, you can find the phone number saved to your Google Account. The number shown there is a contact or recovery number for your account, not necessarily the device’s own line number. Google’s help pages describe this as the number on your Google Account, used for account management and security.
On a feature phone, navigate to Settings > Phone settings > Phone information or About phone to find the device’s line number.
What to do if the number doesn’t appear
If the My Number field on an iPhone is blank or you cannot find the SIM line number on an Android phone, try these fallback steps:
- Check the packaging that came with your SIM card or eSIM activation card. The number is often printed on the card or its holder.
- Call a friend or another phone. The number that appears on their caller ID is your device’s outgoing line number.
- Contact your mobile carrier directly. They can confirm the number assigned to your SIM or eSIM.
- For virtual phone numbers from apps or services, the number is displayed within the app’s settings or account information.
Frequently Asked Questions
Where is my number on iPhone?
Open Settings > Phone > My Number. This field shows the device’s mobile line number if the carrier supports it.
Where is my number on Android?
That is a contact number for your account, not necessarily the device’s SIM line number.
What if the number does not appear?
Apple states that My Number display depends on carrier support, so it may not be shown. On Android, there is no universal setting for the SIM line number; try the SIM packaging, caller ID, or contacting your carrier.
Is the Apple Account phone number the same as my device number?
Not necessarily. Apple’s support page treats the number under Sign-In & Security as a sign‑in and contact number, separate from the mobile line number.
Is the Google phone number the same as my device number?
Not necessarily. Google’s help pages describe it as the number on your Google Account under Personal info > Phone, used for account management rather than the SIM line.
Why is the My Number field blank on my iPhone?
The field is blank when the carrier does not provide the number to the phone software. The device can still make calls and send texts; the number is simply not stored in that setting.
Can I change my telephone number?
Contact your mobile service provider to assign a new number to your SIM.
Can I have multiple telephone numbers on one device?
Yes, dual SIM support allows for personal and work numbers or international travel.
Is there a way to check my telephone number without using my device?
Check your SIM packaging, your carrier’s online account or app, or contact customer support.
For the wider topic, see getting and understanding phone numbers.
