Mobile Number Portability in India: Complete Step-by-Step Guide

Mobile Number Portability (MNP) is one of the most important consumer rights in Indian telecom. It allows you to switch your mobile carrier -- from Jio to Airtel, from Vi to BSNL, or any other combination -- while keeping the same phone number you have used for years. This means you are never locked into a carrier whose service has deteriorated or whose prices have risen beyond your comfort. Your number stays with you, regardless of which network you choose.

Since its nationwide launch in 2011, over 80 crore MNP requests have been processed in India. The process has been refined significantly over the years, and as of 2026, porting your number is faster and simpler than ever. TRAI (Telecom Regulatory Authority of India) mandates that porting must be completed within 3 working days for requests within the same Licensed Service Area (LSA), and within 5 working days for inter-circle porting. In this comprehensive guide, we walk you through every step of the MNP process, from checking eligibility to activating your new SIM.

What Is MNP and How Does It Work in India?

Mobile Number Portability lets you transfer your existing mobile number from one telecom operator (called the "donor operator") to another (the "recipient operator"). The system is managed by two independent MNP Service Providers (MNPSPs) appointed by TRAI: MNP Interconnection Telecom Solutions (MNPITS) handles Zone 1 (northern and western India), while Telekom Malaysia Solutions handles Zone 2 (southern and eastern India).

When you initiate a porting request, your current carrier generates a Unique Porting Code (UPC) via SMS. You then share this code with the new carrier, who submits the porting request to the relevant MNPSP. The MNPSP coordinates the number transfer between the donor and recipient operators, and within the prescribed timeline, your number is activated on the new network.

The entire process is governed by TRAI's Mobile Number Portability Regulations, which set strict timelines and rules. The donor operator cannot refuse a valid porting request, and both operators are required to minimise service disruption during the transition. In practice, most users experience only 30 minutes to 2 hours of downtime during the actual switchover, which typically happens during off-peak hours (usually between 10 PM and 6 AM).

One critical thing to understand is that MNP in India is circle-based. You can port your number to any operator within your current telecom circle without restrictions. However, if you have permanently moved to a different circle (say, from Mumbai to Bengaluru), you would need inter-circle porting, which takes slightly longer but follows the same basic process.

Eligibility Requirements and Pre-Porting Checklist

Before you initiate the porting process, you need to verify that you meet all eligibility criteria. Failing any of these will result in your porting request being rejected, and you will need to wait and try again.

90-day minimum tenure: You must have been with your current carrier for at least 90 days from the date of activation. If you ported to your current carrier recently, you must wait 90 days from the date that port was completed before porting again. This is the most common reason for porting rejections. For new connections activated after January 2025, TRAI has maintained this 90-day cooling period to prevent frivolous porting.

No pending contractual obligations: If you are on a postpaid plan with a device contract or a minimum commitment period, you may need to settle outstanding dues before porting. For prepaid users, any remaining balance or active plan validity will be forfeited when you port out, so time your porting accordingly. If your current Rs 999 annual plan has 8 months left, you might want to wait until it expires before porting.

Active mobile number: Your number must be active and not suspended or disconnected. If your prepaid number has expired due to non-recharge, you need to reactivate it first with a minimum recharge before you can port. Numbers that have been deactivated for more than 90 days are typically recycled by the carrier and cannot be recovered or ported.

Clear outstanding dues: For postpaid users, all pending bills must be paid before porting. Even a small outstanding amount of Rs 50 can lead to porting rejection. Download your latest bill from the carrier app and ensure the balance shows zero or credit.

No ongoing corporate or enterprise plan: If your number is part of a corporate or enterprise account, you may need authorisation from the account administrator before you can port. Some corporate plans have specific lock-in clauses that prevent individual number porting.

Valid ID proof: You will need the same identity documents that you would need for a new connection -- typically Aadhaar card, passport, or voter ID. The new carrier will complete KYC (Know Your Customer) verification as part of the porting process.

Before starting the port, we also recommend checking the plan options available on your target carrier so you can select your new plan immediately during the porting process.

Step-by-Step MNP Process: How to Port Your Number

Here is the complete process to port your mobile number in India, broken down into clear, actionable steps.

Step 1: Generate Your Unique Porting Code (UPC). Send an SMS from your current number with the text PORT followed by a space and your 10-digit mobile number to 1900. For example, if your number is 9876543210, send "PORT 9876543210" to 1900. You will receive the UPC via SMS within minutes. This code is valid for 4 days for intra-circle porting and 15 days for inter-circle porting. Note the expiry date carefully -- if the code expires, you will need to generate a new one.

Step 2: Visit the new carrier's store or website. Take your UPC code and a valid ID proof (Aadhaar preferred) to any authorised retail outlet of the carrier you want to switch to. You can also initiate the process online through carrier apps -- Jio allows porting requests via the MyJio app, and Airtel offers it through the Airtel Thanks app. For online porting, you will complete video KYC or Aadhaar eKYC.

Step 3: Fill out the Customer Acquisition Form (CAF). At the store, you will fill out a porting form that includes your personal details, the UPC code, and your plan selection. Choose your new plan at this stage. For the best value, consider an 84-day validity plan that gives you three months of service at an optimal daily cost. The store executive will also take a photocopy of your ID and a passport-size photograph.

Step 4: Receive your new SIM card. The new carrier will issue you a SIM card (or eSIM if you prefer and the carrier supports it). Do not insert this SIM immediately -- it will not work until the porting is complete. Keep your old SIM active in your phone until you receive confirmation.

Step 5: Wait for the porting to complete. The new carrier submits your porting request to the MNPSP. TRAI mandates completion within 3 working days for same-circle porting and 5 working days for inter-circle porting. In practice, most ports complete within 24-48 hours. You will receive an SMS on your old number confirming the scheduled porting date and time.

Step 6: Activate your new SIM. On the scheduled porting date, your old SIM will stop working (usually during the night or early morning). Insert your new SIM card and restart your phone. The new network should appear within 30 minutes to 2 hours. If you do not see the network after 2 hours, restart your phone again and ensure APN settings are correct. For Jio, the APN is "jionet"; for Airtel, it is "airtelgprs.com"; for Vi, it is "portalnmms"; and for BSNL, it is "bsnlnet".

Carrier-Specific Porting Offers and Welcome Benefits

Carriers actively compete for porting customers and often offer special deals to entice switchers. Here is what each major carrier currently offers to MNP customers as of April 2026.

Porting to Jio: Jio has historically been aggressive with porting offers. Currently, Jio offers a welcome cashback of Rs 50 on your first recharge after porting, applicable on recharges of Rs 299 and above. Jio also provides free 5G unlimited data on all plans in circles where Jio True 5G is available, which covers over 95% of India's urban areas. For postpaid porting, Jio offers the first month free on any Jio postpaid plan, with plans starting at Rs 399/month including 75GB data and Netflix Mobile subscription. Porting to Jio is straightforward through the MyJio app -- you can complete the entire process digitally with Aadhaar eKYC and receive an eSIM instantly if your phone supports it.

Porting to Airtel: Airtel positions itself as the premium carrier and focuses on value-added benefits rather than cashbacks. Porting customers get priority activation (most ports complete within 24 hours), a free Airtel Thanks Gold membership for 3 months (worth Rs 499, includes Amazon Prime Lite and Disney+ Hotstar Mobile), and exclusive access to Airtel's Xstream Play content library. Airtel's prepaid porting recharges start at Rs 299 for 28 days with 2.5GB/day data and unlimited calls. For postpaid porting, Airtel offers a waiver of the security deposit (normally Rs 500) and the first bill's rental credit on plans of Rs 499 and above.

Porting to Vi: Vi offers competitive porting deals, especially for users in their strong circles like Mumbai, Delhi, and Gujarat. Vi's current MNP offer includes double data on the first recharge after porting -- so a Rs 299 plan with 1.5GB/day becomes 3GB/day for the first 28 days. Vi also offers a free weekend data rollover feature for porting customers, where unused daily data from Saturday carries over to Sunday. Vi's Hero Unlimited postpaid plans for porting customers start at Rs 399 with 50GB data and include Netflix Mobile, Amazon Prime Lite, and Disney+ Hotstar Mobile subscriptions.

Porting to BSNL: BSNL's porting offers are straightforward and focused on price. BSNL does not typically offer cashbacks or OTT bundles, but their base plans are significantly cheaper than private carriers. BSNL's Rs 247 plan offers 50 days validity with 1.5GB/day data, and the Rs 997 annual plan provides 365 days validity with 2GB/day data -- both substantially cheaper than equivalent plans from Jio, Airtel, or Vi. For users in areas where BSNL has strong 4G coverage, porting to BSNL can save Rs 2,000-4,000 per year on mobile bills. Check BSNL plan details for the latest offerings.

Common MNP Rejection Reasons and How to Avoid Them

According to TRAI data, approximately 8-10% of porting requests in India are rejected. Understanding the common reasons helps you avoid delays and failed attempts.

UPC code expired: The UPC is valid for only 4 days for same-circle porting. Many users generate the code but delay visiting the new carrier's store. Always generate the UPC code on the same day you plan to submit the porting request. If you generated the code on a Monday, ensure you submit the porting form by Thursday at the latest.

90-day tenure not met: As mentioned earlier, you must have been on your current network for at least 90 days. If you recently got a new connection or ported to your current carrier, count 90 days from the activation date before attempting to port again. The system automatically checks this and will reject premature requests.

Outstanding dues on postpaid: Even a pending amount of Rs 10 will cause rejection. Before initiating the port, log into your carrier's app and check for any unbilled amounts, late fees, or pending adjustments. Pay everything and wait 24-48 hours for the system to update before generating your UPC.

Incorrect UPC format: When submitting the porting form, ensure the UPC is entered exactly as received in the SMS. The code is case-sensitive and includes a mix of letters and numbers. Common mistakes include confusing the letter O with zero, or the letter I with the number 1. Double-check every character.

SIM not in applicant's name: The porting request must be made by the person whose name is on the current SIM registration. If someone else registered the SIM on your behalf (common in India where family members often buy SIMs for each other), you may face issues. The ID proof you provide to the new carrier must match the name registered with the donor operator.

Corporate number restrictions: Numbers belonging to corporate or enterprise accounts often have porting restrictions imposed by the account administrator. If your work number is under a corporate plan, speak to your IT department before attempting to port.

Technical issues during porting window: Occasionally, the porting process fails due to technical glitches in the MNPSP system or between operators. If your old SIM stops working but the new SIM does not activate within 4 hours, call the new carrier's customer service immediately. They can escalate the technical issue and typically resolve it within 24 hours. Keep a backup communication method (a friend's phone or landline) ready during the porting window.

What to Check Before and After Porting

Porting is more than just switching SIM cards. There are several things you should verify before and after the process to ensure a smooth transition.

Before porting -- Back up your contacts and SMS: While porting does not delete data from your phone, any contacts or messages stored on the SIM card (not common with modern smartphones, but possible on older devices) will be inaccessible after the switch. Back up everything to your Google account, iCloud, or a local backup.

Before porting -- Update linked services: Your mobile number is likely linked to dozens of services -- bank accounts, UPI apps (Google Pay, PhonePe, Paytm), email accounts, social media, and more. While your number remains the same after porting, some services use carrier-based verification (like flash calls or silent verification) that may temporarily fail during the transition. Ensure you have alternative login methods (email, backup codes) for critical services like banking apps and UPI.

Before porting -- Check network coverage: Use the new carrier's coverage map or ask friends in your area about signal quality. Porting to a carrier with poor coverage in your locality defeats the purpose. Jio has the widest 5G coverage across India, followed by Airtel. Vi's coverage is strong in western and southern circles but weaker in the northeast. BSNL's 4G coverage has improved significantly but still lags behind private operators in urban areas. Visit our carrier comparison page for detailed coverage information.

Before porting -- Compare plans thoroughly: Do not port based on a single promotional offer. Compare the regular plan prices you will be paying month after month. An Rs 50 cashback is meaningless if the carrier's base plans are Rs 30-50 more expensive than your current one. Use our plan comparison tool to evaluate options across all carriers before making your decision.

After porting -- Verify all services work: Once your new SIM is active, systematically test: outgoing and incoming calls, SMS sending and receiving, mobile data, VoLTE/VoWiFi calling, and 4G/5G connectivity. Open your banking apps to ensure OTP delivery works. Test UPI transactions with a small amount. If any service is not working, contact the new carrier's support before assuming there is a larger issue.

After porting -- Reactivate services: Some services like Truecaller, WhatsApp, or Telegram may prompt you to re-verify your number after detecting the carrier change. This is normal and simply requires confirming the OTP sent to your (same) number on the new network.

After porting -- Check data speed and quality: Run a speed test using Ookla Speedtest or the TRAI MySpeed app during different times of the day. Compare the results with what was promised. If speeds are consistently below expectations, contact the carrier. For 5G users, verify that your phone is connecting to 5G bands in your area -- look for the 5G indicator in your status bar.

After porting -- Update your carrier information: Some apps and services display your carrier name. WhatsApp and Truecaller, for instance, may show your old carrier for a few days. This updates automatically and is purely cosmetic.

Mobile Number Portability is a powerful tool that keeps Indian telecom competitive. The carriers know that unhappy customers can leave at any time, which motivates them to maintain quality and keep prices reasonable. If your current carrier is not meeting your expectations on coverage, data speeds, pricing, or customer service, do not hesitate to use MNP. The process is free, straightforward, and designed to protect your interests as a consumer. With this guide, you have everything you need to make a smooth switch to whichever carrier best serves your needs.