The tech­ni­cal test pro­ce­du­re for all devices is car­ri­ed out using the latest smart­pho­ne test soft­ware. The fol­lowing func­tions and com­pon­ents are che­cked in detail:

- WiFi
— GPS
— Head­pho­ne input
— Battery
— Came­ra flash
— Mobi­le network
— Speaker
— SIM card holder
— Pro­xi­mi­ty sensors

- Blue­tooth
- Char­ging socket
- But­tons
- Came­ra
- Fin­ger­print & Face ID
- Micro­pho­ne
- LCD & Touch­screen
- 3G/4G & LTE
-Fin­ger sensors