What is the validity of the MTNL 421 plan?

The MTNL 421 plan is valid for 84 days from the date of recharge. After 84 days, outgoing services stop until the user does the next recharge on the same number using any active MTNL prepaid plan.

How much data does the MTNL 421 plan offer?

The MTNL 421 plan provides 4GB/day. The daily quota resets every 24 hours, so unused data does not carry over to the next day, and speed reduces after the daily limit is exhausted for that day.

How do I recharge with the MTNL 421 plan?

Open the MTNL Selfcare app or your preferred UPI app, enter your MTNL mobile number, choose the Rs 421 pack from the plan list, complete payment, and benefits activate within a few minutes on the same number.

Can I check my MTNL 421 plan balance?

Yes. Users can check remaining data and validity through the MTNL Selfcare app or by dialing the operator's standard balance check USSD code. The app shows a detailed breakdown of data, calls, SMS, and validity in one screen.

Is the MTNL 421 plan available in all telecom circles?

Mostly. The MTNL 421 plan is available across most circles, but validity or data can differ slightly by region. Check the circle list on the MTNL hub before recharging.

Does the MTNL 421 plan include any OTT or subscription benefits?

No. The MTNL 421 plan is a standard data and voice pack and does not bundle any OTT or app subscription in the same recharge.

MTNL Rs 421 Plan Details: Validity, Data and Benefits

Name: MTNL Rs 421 Recharge Plan
Brand: MTNL
Price: 421 INR
Availability: InStock

Published: 16 August 2021|Updated: 18 June 2026

The Short Answer

The MTNL Rs 421 prepaid plan gives 4gb/day, standard rates, 100 /day and 84 days validity for one single recharge. It suits unlimited users who want a clear plan with no extra add-on packs needed.

MTNL Rs 421 Plan At a Glance

Recharge price

₹421

Prepaid Unlimited

Validity	84 days
Data	4GB/day
Calls	Standard rates
SMS	100 /day
5G Benefits	4G only — operator has not commercially launched 5G yet
Extras	Unlimited Free Local and STD from Home & MTNL Delhi Network,4 GB per day,100 SMS/day (Local + National) from Home & MTNL Delhi Network. *All other special numbers (e.g. 139) will be charged as per tariff.
Daily cost	₹5.01
Talktime	₹0.69

Full Benefit Description

Unlimited Free Local and STD from Home & MTNL Delhi Network,4 GB per day,100 SMS/day (Local + National) from Home & MTNL Delhi Network. *All other special numbers (e.g. 139) will be charged as per tariff.

What You Get With the MTNL Rs 421 Plan

The MTNL Rs 421 plan delivers 4gb/day, standard rates, 100 /day, and 84 days of validity in a single recharge.

The plan is structured as a daily data pack. Daily mode resets the data quota every 24 hours, so unused data does not carry to the next day, and speed reduces after the daily cap. It is listed as a unlimited recharge inside the MTNL prepaid lineup.

How to Recharge With the MTNL Rs 421 Plan

1
Open the MTNL Selfcare app
Install or open the MTNL Selfcare app on your phone and sign in with your MTNL mobile number.
2
Enter your mobile number
Tap on Recharge and enter the 10-digit MTNL mobile number you want to recharge.
3
Pick the Rs 421 pack
Scroll the plan list and select the Rs 421 plan with 4GB/day and 84 days validity.
4
Pay using UPI, card or netbanking
Complete payment using UPI, debit card, credit card, or netbanking. A confirmation SMS arrives within a few minutes.
5
Verify activation
Open the app again to verify validity, data balance and benefits for the new Rs 421 plan are active on your number.

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FAQs About the MTNL Rs 421 Plan

Plan details are independently verified. Read our disclaimer for editorial policy and accuracy notes.