In this class we are going to see a special case where an Acer phone without having the ID connected, the device does not turn on. The same thing happens in some Huawei. It is a very good case and must be taken into account.
You have to be very careful with these devices, because we can waste a lot of time with the diagnosis. For this reason we can have the battery connected and then with the help of some cables inject voltage into the V_Batt.
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We are also going to see a good tool to measure voltages and data on SIM cards. This tool is essential for these breakdowns, because we can easily measure all signals even without disassembling the mobile.
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6 сен 2024
