Network section
1st check..no service & emergency
2. Basband+ imei
3. Radio off - on
4 ..apt output
5..wtr ...1.8/1.2
6 . 3g/ 4g pa ....vph pwr 3.7 / ldo - 1.8 / apt 3.7+
7. Rf ic ...3.7/ 1.8
Next check cpu side data line
Antana wire
Sub pcb 1.8
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