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Institutional Heritage

Mobile
Repairing Department

Engineering Excellence Since 1920

Mobile Repairing

Right from the alarm clock in the morning to online transactions, from calls to cameras, mobiles are always in our hands. When a mobile is not working, it feels as if life is stuck.

Demand in the technical service sector
Growth due to smartphones and digital living
Job opportunities and self-business
Daily earning opportunities
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AC Technician at work

Our Recruiting Partners

  • Daikin
  • Hitachi
  • Blue Star
  • Samsung
  • Godrej
  • Whirlpool
  • Whirlpool
  • Whirlpool
Deep Dive

Master the Art of
Mobile Repairing

Some dreams start with a broken screen. Some dreams start with a phone that stops charging suddenly. Many young people watch the repair shops and ask, “How do they do it? After school, many students feel lost. They want to earn. They want respect. They want a skill that pays money without waiting for years. Mobile repairing often becomes the turning point.

At GTTI,the Mobile Repairing Course helps students turn curiosity into confidence. This course is meant for students who are interested in acquiring practical skills, not just certificates. If you are interested in knowing mobile phones inside out and earning money with your own hands, this course is meant for you. The requirement for trained mobile phone technicians is increasing every day. Houses, offices, markets, and villages all require mobile phone repair. At GTTI, students learn in a step-by-step process, from basic to advanced smartphone repairing.

From smartphone hardware to advanced mobile servicing—learn to diagnose, repair, troubleshoot, and maintain real mobile devices with intensive hands-on training from basic to advanced levels.

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Take the first step towards your professional HVAC career today.

Course Curriculum

In the mobile repairing course, you don’t just observe the repairing process. You do the repairing yourself. You test the components. You identify the problems. You solve them. The course includes mobile hardware, basic electronics, smartphone technology, software concepts, and problem-solving skills. The aim is straightforward. When a customer brings you a faulty smartphone, you shouldn’t be scared. You should be confident. The course is designed to prepare students for the workplace, repair shops, or even their own mobile repair business.

What Skills will you gain from Mobile Phone Repairing courses?

Learning mobile repairing is not just learning a skill. It is learning independence. It is learning to open a phone without fear. It is understanding how components connect and why they fail. It is learning patience, focus, and responsibility. Troubleshooting improves your thinking. Dealing with customers teaches you respect and trust. With time, your hands become skilled, and your confidence increases. Learning mobile repairing through a mobile technician course provides you with an opportunity to earn honestly through your own efforts.

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GTTI Eligibility

Open for Admissions 2024-25

Enrollment Criteria

Who is Eligible to Enrol?

This course is suitable for students who have passed Class VIII, IX, or X, depending on the programme level. GTTI welcomes learners who want practical work instead of long academic routes. If you are searching for a mobile repairing course in Kolkata or a mobile repairing training centre near you, this course is designed to help beginners grow step by step. You do not need prior technical knowledge. You only need interest and dedication.

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Why Choose GTTI for Mobile Repairing Excellence?

Join an institution that prioritizes practical skill-building and career success above all else.

Hands-on Mastery

Learn by fixing actual mobile phones, not just through video tutorials.

Expert Mentorship

Experienced professionals in mobile repairing will guide you.

Verified Reputation

Graduate from an institution with over 100 years of trust in technical vocational training.

Professional Certification

Our Specialized Programs

  • AC Engineering

    Mobile & Telephone Repairing Technician

    Course Outline Module I :

    Basic Electronics-OHMS law, types of resistors, AC, Diode, Transistor, JFET and MOSFET, Oscillator, Amplifier, Digital Electronics and Microprocessor, Use of solder rework -station, Use of Multi-meter, ESD in Mobile repairing, Telephone EPBT, Overview of cordless phone, Telephone circuit, PCB tracing fault detection and many more.

    Course Outline Module II : :

    Computer software overview, Smart Phone GSM mobile network, CDMA Mobile phone, GPRS, GPS, WAP, Blue tooth, Compressing video file, Broad Band, base Band, Dual Band etc, Camera Mobile phone, sections of mobile handsets, Advance technology 3G, Advance OS like Android, Windows phone, Wi-Fi connectivity, Multimedia Phones, Troubleshooting etc.

    Duration: 12 months

    Eligibility: Passed Class X Board Exam

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  • AC Technician

    Mobile & Telephone Repairing Mechanic

    Course Outline

    Basic Electronics-OHMS law, simple calculation - V, I & R, types of resistors, AC, Diode, Transistor, Oscillator, Amplifier, Digital Electronics and Microprocessor, Multi-meter, Mobile Phone, GSM-mobile Network, CDMA Mobile Phone, GPRS, GPS, WAP, Bluetooth, INFRARED, SMS, MMS, MMM, Bandwidth Broadband, Base Band, Dual Band, Camera Mobile Phone, etc, including sections of mobile handsets, modulations, multiple division techniques, types of battery, speaker, buzzer, microphone, Smart phones, Windows phone, Wi-Fi connectivity, Multimedia Phones, Troubleshooting etc.

    Duration: 06 months

    Eligibility: Class IX

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  • AC Technician

    Smartphone Repairing Technician(Jr)

    Course Outline

    Basic Electronics and electrical Engineering, Use of solder rework –station, Use of Multi-meter, SMD tester, battery booster etc., ESD in Mobile Repairing, IC Balls making & Jumper setting, Card -Level- Assembling / De-assembling of various Handset and replacement of components, changing of LCD, Touch screen, PDA along with usage of LCD PDA Separator. Chip level trouble shooting on DCT-4, WD 2, BB5 (Nokia) with MS Lumia series, Chip level trouble shooting on Android (China Brand) Mobile software with UFST.

    Duration: 06 months

    Eligibility: Class VIII

    Enrol Now Brochure
  • AC Technician

    Smartphone Repairing Technician(Sr)

    Course Outline

    Microprocessor and microcontroller, Smart tweezers, Digital Multi-meter, ultrasonic cleaner, function generator, CRO, Concepts of FDMA, TDMA, WCDMA, Various CPUs, TAB with technical features of various TABs, Assembling/De-assembling of various TAB, Torch screen. PDA, Latest Android handset by using LCD-PDA separator Device. Chip level trouble shooting on latest Lumia handsets, TABs, Installation and downloading of up graded flash file through Internet application UFST, Volcano etc, various secret codes for Nokia, Samsung, LG, Sony & Motorola handsets, loader installation for Samsung (ODIN), Nokia (PHONIX) and flashing process with those loaders.

    Duration: 06 months

    Eligibility: Class VIII

    Enrol Now Brochure

Student Success Stories

Hear from our alumni who transformed their technical curiosity into thriving careers in the Automobile Engineering industry.

Frequently Asked Questions

It is a technical course that teaches how to install, maintain, service, and repair air-conditioning and refrigeration systems.
Yes, certain diploma and vocational certifications in AC & Refrigeration are designed for students who have completed Class IX or X, focusing on hands-on skill development.
Absolutely. This course provides you with the technical expertise and certification needed to start your own AC repair and maintenance service center.
Yes, GTTI emphasizes hands-on learning. You will spend over 70% of your course time in our advanced labs working on real HVAC equipment.
Yes, our main campus is in Kolkata, and we have several training centers across the region providing this specialized training.
GTTI has a dedicated placement cell. Our AC & Refrigeration graduates are highly sought after by companies like Samsung, Godrej, Daikin, and Blue Star.
You will learn about window ACs, split ACs, inverter ACs, frost-free refrigerators, water coolers, and central air conditioning systems.
Yes, the course starts from basic thermodynamics and electrical concepts, making it ideal for anyone starting their technical career.
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