Formal Complaint Letter to Dealer for Defective Mobile Phone (Solved)
Are you preparing for your Class 10 or Class 12 English Board Exams? Consumer complaint letters regarding defective electronic goods are extremely popular in the Writing Skills section. Today, we are covering the 11th highly expected topic from our Top 20 list: a Formal letter to a dealer complaining about a defective mobile phone you purchased recently and requesting an immediate replacement. Below is a cleanly formatted and fully solved example to help you secure a perfect score!
Exam Tip 💡: When writing a complaint letter for a defective product, you must include the Date of Purchase, Invoice/Bill Number, and the Warranty Period in the very first paragraph. Without these details, a business letter is incomplete, and you will lose marks in the "Content" section. Always end by clearly stating whether you want a repair, a refund, or a replacement!
Question: Complaint Letter Regarding a Defective Mobile Phone
You are Rohit/Roshni, residing at 15, Cross Cut Road, Coimbatore. You recently purchased a smartphone from Reliance Digital, Gandhipuram, Coimbatore. Within a week, the phone started developing technical faults. Write a letter to the Store Manager complaining about the defect and requesting an immediate replacement.
Sample Solution:
15, Cross Cut Road,
Coimbatore - 641012.
Date: November 6, 2026
To,
The Store Manager,
Reliance Digital,
Gandhipuram,
Coimbatore - 641012.
Subject: Complaint regarding a defective mobile phone and request for replacement.
Respected Sir/Madam,
I am writing to bring to your attention a severe functional issue with a smartphone that I purchased from your Gandhipuram showroom on October 28, 2026. The device is a Samsung Galaxy A54 (128GB, Black). My cash memo/invoice number is RD/CBE/4598, and the phone comes with a standard one-year manufacturer's warranty.
For the first few days, the phone worked perfectly well. However, over the past three days, it has developed serious technical glitches. The display screen flickers continuously and goes completely blank during phone calls. Furthermore, the battery drains abnormally fast within two hours of a full charge, and the device overheats dangerously while charging. Since I am a student attending online classes, this defective handset is causing a severe disruption to my studies.
Since the product has developed these major hardware defects within just ten days of purchase, well within the warranty period, I kindly request you to replace this defective handset with a brand new one immediately. I am not looking for a repair, as the motherboard seems to be inherently faulty.
I have enclosed a photocopy of the purchase bill and the valid warranty card for your reference. I look forward to a swift and positive response.
Thanking you.
Yours faithfully,
Rohit
(Contact: 98765XXXXX)
Enclosures:
1. Photocopy of Cash Memo/Invoice
2. Photocopy of the Warranty Card
Examiner's Marking Scheme Breakdown (Total 8 Marks):
- Format (Sender & Receiver Address, Date, Subject, Salutation, Subscription, Enclosures): 1.5 Marks
- Content (Detailing product specs, purchase date/bill no., explaining the defects, demanding replacement): 2 Marks
- Expression (Grammatical accuracy, firm yet polite business tone, standard business vocabulary): 1.5 Marks