Application for Change Mobile Number in Bank

Published: 27 Jan 2026

Dear friends,
Greetings to all of you. Have you recently changed your mobile number and now want to link the new number to your bank account? Many people face this situation and feel confused about what to do next. If you are also worried, relax. This problem is common and easy to solve with the right guidance.

When the mobile number changes, the bank needs a written application to update records. Most people get stuck because they do not know how to write the application correctly. They fear making mistakes or using the wrong words. Because of this, they delay the process and feel stressed.

You do not need to worry anymore. Writing an application for changing a mobile number in a bank account is simple. You just need clear words and the correct format. In this guide, we will help you step by step so you can write it confidently.

Table of Content

Samples
Basic Format for Writing the Letter for Changing Phone Number in Bank
Some Tips for Writing the Best Letter for Changing the Phone Number
Hey My Champs

Samples

Hi friends, I’ve written some pre-made applications for you. You can copy these samples and replace the details with your own information.

This will save you time and help you write the application without any confusion.

Simple Application for Changing Mobile Number

The Bank Manager

[Bank name]

[Branch address]

Date: 00/00/00

Subject: Request for change of mobile number

Respected sir,

I am [Your Name], holding a bank account with account number [Account Number]. I request you to update my registered mobile number from [Old Number] to [New Number].

Due to [Reason], I am no longer using my old mobile number. Kindly update my contact details and activate all banking alerts on my new mobile number. I have attached copies of my passbook and identity proof for verification. I would appreciate your prompt support in processing my request.

Thank you for your attention.

Your Sincerely

Your name: [your name]

Contact No: [Mob-No]

Signature: [signature]

Also read: Application to the Bank Manager for Unblock Account

Application for Change of Mobile Number in PNB Bank

The Bank Manager

Panjab National Bank

Delhi

Date: 00/00/00

Subject: Request for change of mobile number

Respected sir

I am [Your Name], maintaining a bank account with account number[Account Number]. Due to [Reason], my old mobile number[Old Mobile Number] is no longer in use. I kindly request that you deactivate all SMS alerts and banking notifications linked to that number to ensure account safety.

Please update my new mobile number [New Mobile Number] in your records and enable all banking alerts on it. I have enclosed copies of my passbook and valid identity proof for verification. I would appreciate your timely assistance in completing this update.

Thank you

Your Sincerely

Your name: [your name]

Contact No: [Mob-No]

Signature: [signature]

Also read: Application for Opening a Bank Account

Application for Change of Mobile Number in SBI

The Bank Manager

State Bank of India

Agra

Date: 00/00/00

Subject: Request for change of mobile number

Respected sir,

I am [Your Name], holding a savings account with State Bank of India under account number [Account Number]. Due to[Reason], my previously registered mobile number [Old Mobile Number] is no longer active. To keep my account safe, I request that you disable all SMS and banking alerts connected to that number.

Please update my account records with my new mobile number [New Mobile Number] and enable all required alerts. I have enclosed a copy of my passbook and valid identity proof for verification. I would appreciate your quick assistance in resolving this request.

Thank you

Your Sincerely

Your name: [your name]

Contact No: [Mob-No]

Signature: [signature]

Also read: SBI Statement Application in Hindi & English – Samples & Format

Application for Change of Mobile Number in Yes Bank

The Bank Manager

Yes Bank

[Branch address]

Date: 00/00/00

Subject: Request for Change of Mobile Number

Respected sir,

I am[Your Name], maintaining an account with Yes Bank under account number [Account Number]. Due to[Reason], my previously registered mobile number [Old Mobile Number] is no longer in use. To ensure the safety of my account, I request that you stop all messages and banking alerts sent to that number.

Please update your records with my new mobile number [New Mobile Number] and enable all required banking alert services. I have enclosed copies of my bank passbook and valid identity proof for verification. I would appreciate your prompt assistance in completing this update.

Thank you

Your Sincerely

Your name: [your name]

Contact No: [Mob-No]

Signature: [signature]

Also read: Application to Close a Bank Account

Application for Change of Mobile Number in Bank of Baroda

The Bank Manager

Bank of Baroda

[Branch address]

Date: 00/00/00

Subject: Request for change of mobile number

Respected sir,

I am [Your Name], holding an account with Bank of Baroda under account number [Account Number]. Due to [Reason], my registered mobile number [Old Mobile Number] is no longer in use. To ensure the security of my account, I request that you stop all SMS alerts and notifications linked to that number.

Please update your records with my new mobile number [New Mobile Number] and activate all banking alert services. Copies of my passbook and valid identity proof are enclosed for verification. I would appreciate your prompt support in completing this update.

Thank you

Your Sincerely

Your name: [your name]

Contact No: [Mob-No]

Signature: [signature]

Application for Change of Mobile Number in Bank HDFC

The Bank Manager

HDFC

Rampur, Bihar

Date: 00/00/00

Subject: Request for change of mobile number

Respected sir,

I am [Your Name], holding an account with HDFC Bank under account number [Account Number]. Due to [Reason], my registered mobile number [Old Mobile Number] is no longer in use. To ensure the security of my account, I request that you stop all SMS alerts and notifications linked to that number.

Thank you

Your Sincerely

Your name: [your name]

Contact No: [Mob-No]

Signature: [signature]

Change the mobile number in the bank account

The Bank Manager

[Bank name]

[Branch address]

Date: 00/00/00

Subject: Request for Update Mobile number

Respected sir,

I am[Your Name], holding an account with [Bank Name] under account number[Account Number]. Due to [Reason], my registered mobile number[Old Mobile Number] is no longer active. For the safety of my account, I request that you discontinue all SMS alerts and notifications linked to this number.

Please update your records with my new mobile number [New Mobile Number] and enable all banking alert services on it. Copies of my passbook and valid identity proof are attached for verification. I would appreciate your prompt support in completing this update.

Thank you

Your Sincerely

Your name: [your name]

Contact No: [Mob-No]

Signature: [signature]

Application for Update mobile number in the Bank

The Bank Manager

[Bank name]

[Branch address]

Date: 00/00/00

Subject: Request for Update Mobile number

Respected sir,

I hope you are doing well. I am [Your Name], an account holder with [Bank Name], holding account number [Account Number]. I want to change my old phone number due to [mention your reason].

For the security of my account, I kindly request you to deactivate all SMS alerts and banking notifications linked to my old mobile number [Old Mobile Number].

Please update my account with my new mobile number [New Mobile Number] and activate all related alert services. Copies of my passbook and valid identity proof are enclosed for verification.

Thank you for your prompt support and cooperation.

Your Sincerely

Your name: [your name]

Contact No: [Mob-No]

Signature: [signature]

Basic Format for Writing the Letter for Changing Phone Number in Bank

The format for writing a letter to replace your old phone number with a new one is really simple.

You just need to include the bank details, a clear subject line, a polite greeting, and the main request to change your phone number, along with your personal details.

So,o guys, let’s come and see the exact format with a ready-to-use sample letter.

Recipient Details: It’s the starter part where we add the full recipient details like the bank name, branch name, and address. This helps the bank staff know exactly which branch will handle your request. Adding correct details here makes the letter look professional and helps avoid delays. Here’s an example of recipient details:s; To, The Branch Manager, ABC Bank, City.
A Clear Subject Line: It works like a title for your application. A good subject line helps the bank staff understand your request quickly. It also makes your letter look professional and organized. Always keep it short and to the point. Example: Subject: Request to Change Registered Mobile Number.
A Polite Salutation: A salutation is the greeting to your recipient. So always use respectful words here, like “Respected Sir/Madam” or “Dear Branch Manager.” This makes your letter look polite and professional. It also creates a good impression and shows respect.
Body of Your Application: The body isae very important part of your application. Here, you will need to include only a few points, such as your old phone number, new phone number, the reason for the change, and a polite request to process your request. Make sure you write your account number and full name clearly. Keep the sentences short and simple so the bank staff can understand your request quickly. The example of the body includes “I am [Your Name], holding account number [Account Number]. My current registered mobile number [Old Number] is no longer in use. I request you to update my new mobile number [New Number] in your records. The reason for this change is [Reason]. Please process my request and enable SMS alerts and OTPs on the new number. Thank you.”
Closing: The closing of your application should include a polite thank you and your personal information. Always end with a respectful line like “Thank you” or “Yours faithfully.” Then add your full name, account number, and the date. This makes your letter complete and official. Example:

Thank you for your support.

Yours faithfully,

[Your Name]

Account No: [Account Number]

Date: [DD/MM/YYYY]

Some Tips for Writing the Best Letter for Changing the Phone Number

Writing a letter to change your phone number records is a simple task. But my champs, if you make mistakes, they definitely cause issues in the shape of delays or rejections.

So follow some of these tips and avoid common mistakes to make your letter perfect and get your number updated quickly.

Keep It Short and Clear: Your application must be short, to the point, and clear. Avoid adding extra details or long stories. A short and simple letter helps the bank staff understand your request quickly and process it faster.
Mention All Details Correctly: Always write your details correctly to avoid any delay. 📝 Include your full name, account number, old phone number, and new phone number. If any detail is wrong, the bank may not be able to update your record. Double-check everything before submitting the letter.
Mention the Reason (If Needed): Also mention why you want to change your phone number. Keep the reason short and simple. You can write reasons like your old number is inactive, you lost your phone, or the number is now with another family member. This helps the bank understand your request better and approve it faster.
Use Formal Words: Always use formal words — no casual language is acceptable. Avoid slang, emojis, or short forms like “u” or “pls.” Use polite and proper words like “request,” “kindly,” and “respectfully.” This makes your letter look professional and helps the bank take your request seriously.
Avoid Grammar Mistakes: Always double-check your application for grammar mistakes. Do not use short forms like “u,” “pls,” or “thx.” Also, make sure every sentence is meaningful and complete. A clean and correct letter looks professional and helps the bank process your request quickly.

Hey My Champs

So in this article, we’ve covered everything about writing an application to change your mobile number in the bank. We discussed the correct format, shared useful tips, and also provided sample letters that you can use right away.

You now know how to write the letter step-by-step, what details to include, and how to make your request look professional. Following these tips will help you avoid mistakes and get your mobile number updated quickly.

If you still feel unsure, don’t worry. Just use the sample templates and fill in your details. And if you need any other type of help related to the topic, feel free to ask in the comment section.