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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsUse <input type=”tel”> for a phone-number field in an HTML form. It treats the value as text rather than a number, so users can enter a country code, spaces, parentheses, hyphens, an extension, or telephone characters such as * and #.
The important limitation is that type=”tel” does not validate a phone-number format. That is deliberate: phone formats differ between countries. Add only the constraints your application can genuinely support, and validate the submitted value again on the server.
Basic HTML phone-number field
This is a complete, usable form:
<form action=”/submit-phone” method=”post”>
<label for=”phone”>Phone number</label>
<input id=”phone” name=”phone” type=”tel” autocomplete=”tel”>
<button type=”submit”>Submit</button>
</form>
Each attribute has a separate job:
| Attribute or element | Purpose |
|---|---|
| type=”tel” | Creates a telephone input and may prompt a mobile browser to show a telephone keypad. |
| id=”phone” | Connects the input to its label through for=”phone”. |
| name=”phone” | Names the value in submitted form data. Without name, the field is not included in the submission. |
| autocomplete=”tel” | Tells the browser that this is a complete telephone number, including a country code where applicable. |
| action=”/submit-phone” | Specifies the application endpoint. Replace it with your actual route. |
| method=”post” | Sends the form data in the HTTP request body rather than appending it to the URL. |
The label text and button text are supplied by you; browsers do not require the label to say “Phone number” or the button to say “Submit.”
Why use type=”tel” instead of type=”number”?
A telephone number is an identifier, not a quantity for arithmetic. A tel input stores text, which allows values such as:
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- +1 555 123 4567
- (555) 123-4567
- 020 7946 0958
- +44 20 7946 0958 ext. 123
- 555-123-4567
A number input is the wrong control because numeric controls are designed for quantities and can reject or mishandle formatting characters. They can also introduce number-specific behavior such as steppers. Use tel when the user is entering a telephone value, even if your backend later normalizes it to digits or international E.164 format.
Make the phone number required
Add required when the user must provide a value:
<label for=”phone”>Phone number</label>
<input id=”phone” name=”phone” type=”tel” required>
The browser’s constraint validation prevents normal submission when the field is empty. However, required only checks that a value exists. It does not determine whether the value is a real, reachable, or correctly formatted phone number.
Also note that required has no effect on a readonly input. A readonly value may still be submitted if the field has a name, but the browser does not require it to be non-empty.
Use pattern for a known local format
If a form serves one country or explicitly requires one display format, add a pattern:
<input id=”phone” name=”phone” type=”tel” required pattern=”[0-9]{3}-[0-9]{3}-[0-9]{4}” title=”Enter a phone number in the format 555-123-4567″>
This accepts 555-123-4567 and rejects values such as 5551234567, (555) 123-4567, or 555-123-45678. The pattern is matched against the complete value, not just a section of it.
HTML’s pattern value is a JavaScript regular-expression pattern without surrounding slash characters. Write [0-9]{3}-[0-9]{3}-[0-9]{4}, not /[0-9]{3}-[0-9]{3}-[0-9]{4}/.
Include a title that explains the required format. “Phone number” is not enough because it does not tell the user what the pattern accepts.
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Do not apply a US-style pattern as a universal phone validator. It will reject valid numbers from other countries and valid alternative formats from the same country. If your service is international, prefer a country selector plus appropriate application-level parsing and validation.
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Limit the text length
minlength and maxlength constrain the length of the entered string:
<input type=”tel” name=”phone” minlength=”7″ maxlength=”20″>
These values count UTF-16 code units, including spaces, parentheses, hyphens, and other characters. They do not count normalized digits and do not represent an international telephone-number standard.
A formatted value may reach maxlength=”20″ sooner than the same number with punctuation removed. Treat these attributes as basic input limits, not as proof that the value is a valid phone number. Your server must also enforce any maximum length because a direct HTTP request can bypass browser restrictions.
Improve mobile input with inputmode
type=”tel” may cause a mobile browser to display a telephone keypad, but the HTML specification does not require a particular keyboard design. You can also provide an input-mode hint:
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inputmode=”tel” requests a telephone-oriented keyboard, commonly including digits, * and #. It is only a keyboard hint; it does not validate the value.
inputmode=”numeric” requests a digits-oriented keyboard, but it does not enforce digits-only input and is not equivalent to type=”tel”. For a telephone field, use type=”tel” for the field semantics and add inputmode only when its keyboard hint suits your users.
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Use autocomplete correctly
For one complete phone number, use:
<input type=”tel” name=”phone” autocomplete=”tel”>
Other useful tokens include:
| Token | Use |
|---|---|
| tel | A complete telephone number, including country code where applicable. |
| tel-national | A telephone number without the country code. |
| tel-local | A local telephone number. |
| tel-local-prefix | The local number’s prefix. |
| tel-local-suffix | The local number’s suffix. |
| tel-extension | A telephone extension. |
For a billing or shipping contact field, a contextual value such as autocomplete=”billing tel” or autocomplete=”shipping tel” is appropriate. Autofill remains a browser and user-agent decision; the attribute does not guarantee that a value will be offered.
Accessible labels, hints, and placeholders
Keep a visible label and use a placeholder only as an example:
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<label for=”phone”>Phone number</label>
<input id=”phone” name=”phone” type=”tel” placeholder=”+1 555 123 4567″ aria-describedby=”phone-help”>
<small id=”phone-help”>Include the country code.</small>
A placeholder disappears when the user starts typing, so it is not a replacement for a label. The hint is better placed in visible text associated with the field using aria-describedby. Do not put line breaks in a placeholder.
If you use pattern, make the accepted format clear in the visible instructions and in the pattern’s title. For an international field, say whether users should include a country code and which formats you accept.
Submit and validate the value on the server
Client-side validation improves the form experience but is not a security boundary. Users can remove attributes, disable validation, modify the page, submit scripted requests, or call your endpoint directly. The server should:
- Confirm that the expected form field, such as phone, is present.
- Apply a sensible maximum length before processing or storing it.
- Normalize whitespace and formatting according to your application’s rules.
- Parse the number with an international phone-number library if country-aware validation is needed.
- Store the canonical value separately from the display value when you need consistent searching or messaging.
- Perform a verification step, such as an SMS or voice code, when ownership matters.
HTML validation cannot prove that a number is assigned, reachable, owned by the person submitting the form, or valid in the selected country.
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| Symptom | Likely cause | Fix |
|---|---|---|
| The field appears on screen but is missing from the request. | The input has no name, or it is disabled. | Add name=”phone” and remove disabled when the value should be submitted. |
| A number containing digits is rejected. | The pattern requires punctuation or a particular layout. | Change the pattern, change the instructions, or remove the pattern for a flexible field. |
| Letters are accepted. | type=”tel” intentionally does not define a syntax. | Add suitable validation, preferably with country context, and repeat it on the server. |
| The value is cut off or fails length validation. | maxlength counts the complete text, including formatting characters. | Increase the limit or normalize according to a documented format. |
| Autofill does not appear. | autocomplete is a hint, not a guarantee; browser conditions and saved user data vary. | Use the correct token and keep the field’s label, name, and form structure clear. |
| The browser does not show the expected keypad. | Keyboard appearance is controlled by the user agent and platform. | Use type=”tel”, optionally add inputmode=”tel”, and do not depend on one keyboard layout. |
A practical international example
For a broadly international contact form, avoid forcing one punctuation pattern. Give the user a clear country-code instruction and impose only a generous application-appropriate length limit:
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<form action=”/contacts” method=”post”>
<label for=”phone”>Phone number</label>
<input id=”phone” name=”phone” type=”tel” inputmode=”tel” autocomplete=”tel” placeholder=”+44 20 7946 0958″ aria-describedby=”phone-help” required maxlength=”32″>
<small id=”phone-help”>Include the country code, for example +44 20 7946 0958.</small>
<button type=”submit”>Save phone number</button>
</form>
This markup improves labeling, mobile entry, and autofill without pretending that HTML alone can determine whether every international number is valid.
FAQ
What is the correct HTML input type for a phone number?
Use <input type=”tel”>. It treats the value as text and is designed for telephone numbers, including formatted and international values.
Does type=”tel” validate a phone number?
No. It does not impose a syntax because telephone formats vary. Use pattern only for a format you intentionally support, and perform stronger validation on the server.
Should I use type=”number” for phone numbers?
No. Phone numbers are identifiers, not quantities. type=”number” is unsuitable for values containing a plus sign, spaces, parentheses, hyphens, extensions, or other telephone characters.
What does inputmode=”tel” do?
It hints that the browser should offer a telephone keypad. It does not validate the value and does not replace type=”tel”.
Why is my phone number missing from submitted form data?
Check that the input has a name attribute and is not disabled. An input without name is not included in the form data set.
Can HTML confirm that a phone number is real?
No. HTML can apply client-side constraints, but it cannot prove that a number is assigned, reachable, or owned by the user. Use server-side parsing and, when necessary, SMS or voice verification.
The Bottom Line
Start with type=”tel” name=”phone” autocomplete=”tel”, connect it to a visible label, and add required only when the field is mandatory. Use pattern for a deliberately narrow format—not as a universal international validator. Treat inputmode, maxlength, and browser validation as input guidance, then validate and normalize the submitted value on the server.
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