Product can be tested by technician even without packing it in the mobile phone. Just join connectors and see if all is well, then proceed with complete installation. Once installed, LCD cannot be taken out without damage it, which voids warranty. If you once remove the screen guard from the product please do not paste it again, it will be noticeable.
All our products are tested therefore no claims shall be entertained if you or your technician damages the product during repairing not covered warranty policy