I am having old Samsung Mobile phone which is not in use since long time. I am not using it frequently because of its Memory Limitation having only 768 MB usable and it can’t hold much App. Load also.
One day while organizing my tool drawer I have removed everything out and got this mobile in my hand.
Mobile Phone Dead Problem and Solution – How to Repair a Dead Mobile Cell Phone
- Remove the battery and see if it gets charged or not. Check voltage using a Multimeter. Voltage must be 3.7-4.2 Volt DC. Use a Battery Booster to Boost the Power of the Battery and Charge it again.
- Check Battery Point and Battery Connector. Clean Battery Point and Battery Connector to remove any carbon deposits.
- Resold or change the Battery Connector.
- Insert charger and se if the “Battery Charging” appears or not. If there is icon of “Battery Charging” but the mobile phone does not gets switched ON then check ON / OFF Switch. Voltage of ON / OFF Switch must be 2.5 to 3.5 Volt (DC). Clean or change the ON / OFF Switch. Check track of ON / OFF Switch and Jumper if required.
- If the charging icon is not there then check voltage of ON / OFF Switch. If the voltage is between 2.5 to 3.7 Volts DC, then RELOAD Software in the Phone (Software Flashing).
- If the phone won’t get switched ON even after reloading software then Heat the C.P.U, Power IC and Flash IC.
- If there is no voltage on the ON / OFF Switch then check track of the ON / OFF Switch. Jumper if required.
- If the problem is not solved then heat, Reball or change the Power IC and CPU to fix the problem.
- Keep the Multimeter on Buzzer Mode and Check + and – of the Battery Connector. If there is Buzzer Sound then the Phone is short. If there is short at the Battery Connector then clean the PCB with thinner. Apply Flux and Heat the PCB.
- If this does not fix the Mobile Phone Dead problem then remove the PFO and check for short. If there is short then replace the PFO.
- Remove the charging connector and check for shorting. If there is short then change the connector.
- Remove the charging IC and check for shorting. Change if required.
- Remove the Bluetooth IC and check for shorting. Replace if required.
- Remove the Power IC and check for shorting. Replace with a new one if required.
- Remove the CPU and check for shorting. Replace if required.
- Remove all the Big Electrolytic Capacitors and check one by one. Replace capacitors if required.
- Some mobile phone gets dead if the RTC (Real Time Clock) is faulty. This happens mostly in China Mobile Phones. Change the RTC to fix the problem.
- If the mobile phone gets hang after reloading software then change the RTC.
- If the phone is still dead then check by replacing the 26 MHz Crystal Oscillator.
Dim Your Screen & Adjust Screen Timeout
Do you really need your screen set at maximum brightness? Probably not. Do you need your screen to stay active for up to one minute after use? Definitely not. Therefore, adjust your settings to save some of your battery’s juice.
You can set your phone to auto (for dimming), but it may not be entirely effective. Instead, set it to a very low setting and adjust it as needed. For your screen’s timeout, set it to the lowest amount possible (usually about 15 seconds). Unless you know you’ll be using your phone consistently for a long period, you don’t need your screen to be ‘on’ when not in use.
However, there is a way to revive a dead Android phone!
There are some rather simple troubleshooting ideas that you can take to identify the problem and try to fix it.
Before you take your phone to your carrier, try figuring out the problem yourself, by doing the following steps:
2: Using Android Data Extraction software
3: Recover Data via SD Card Reader
4: Recover Data via Google Account