About this course

Typically Mobile phone will have display (LCD, touch screen), keypad, microphone, speaker, SIM card, battery, USB port, antenna, memory unit(RAM,ROM), camera, CODEC, RF part, DAC/ADC, baseband part (L1/Layer1/physical layer) running on DSP, Application/protocol layers running on CPU, ON/OFF switch and Bluetooth/GPS features. For Mobile Phone which works on GSM network baseband part (Layer 1) and protocol stack running on CPU differs, which will be based on GSM standard. For CDMA Mobile phone the same Layer 1 and protocol stack will be based on CDMA standard and so on for LTE, HSPA standard based mobile phones. Mobile phone provides connectivity with laptop/other devices using WLAN, Bluetooth and GPS. All these features are based on specific standard specifications designed. GSM Mobile phone is in use earlier days for only voice applications. Now-a-days it has become more popular for SMS/MMS and internet applications due to GPRS feature. After the introduction of smartphone many applications such as facebook,Orkut,Twitter, various games comes built-in with the phone. Now mobile phone has slowly taken the place of laptop for many of the applications.

• Key pad Problem
• Receiver section Problem
• Transmitter section Problem
• Charging circuit Problem
• Power/Supply section Problem
• System IC & CPU Section Problem
• Voice Transmission / Receiving Problem
• Ringer volume / tone Problem
• Dead set Problem
• Network Reception Defective
• Volume Switch Fault
• Flap Defect
• Battery Defect (Low Battery, Charging, Back•Up)
• Diann Problem
• Body Fitting Problem
• Wi/Fi SIM Card Defect
• Faulty Display
• Water Logging Problem
• GSM / CDMA/ 3G/ Touch Screen Mobile Phone Repairing
• Fault finding with the help of CRO