Samsung M21 hang on logo|charging logo| dead issue Solution

Android smartphone repairing training Institute
Advance level training
Course details
1. Tools knowledge smd, iron , multimeter
2. Theory of cpu
3. Boot sequence
4. Ic's Reballing
5. Fault finding
6. Shorting half shorting
7. Pasted ic's White , Black removing cleaning Reballing
8. Lcd, light,audio, charging, network section study
9. Emmc , Emcp knowledge how to judge emmc,emcp fault
10. Programming using jtag
11. Special classes about double decker cpu
Practical training with live handset
After course completed
We provide our full support
Duration 10 days
Contact details
Phone no-7373663999,7373662999