The only way to bypass iCloud on phones is to replace the CPU, NAND, EEPROM and Baseband. If someone has bought a phone to steal these chips, replace them with faulty ones and return the handset, you can be certain that there will be no serial number able to be read from the device. It is also minimal effort to remove the components that relate to the lightning port, which will mean no test will work. All of these are under soldered on RF shields, there is absolutely no way that an Apple store tech will spot these having been removed or replaced, hence why the fraud value is still so high.
All this tool does is stop those who don't know what they're doing from cheating Apple. Anyone that knows what they're doing, and why they do this, cannot be stopped.
All this tool does is stop those who don't know what they're doing from cheating Apple. Anyone that knows what they're doing, and why they do this, cannot be stopped.