*#06#
This works on every phone. Displays your IMEI 1 and IMEI 2 (dual SIM variant). Use this to check device authenticity or for network unlocking.
On some Sharp Aquos Sense 5G UPD units (especially carrier variants in Japan — Docomo, AU), entering *#*#2486#*#* may present a password prompt. That is the Engineer Mode lock. Common default passwords: how to use secret codes on sharp aquos sense 5g upd
If these fail, the carrier has locked engineering access. You cannot bypass this without root (not recommended).
*#*#0673#*#*
If you experience low call volume on the Aquos Sense 5G UPD, this code opens the audio gain menu. You can increase:
Recommended increase: +2dB only. Higher may distort. *#06# This works on every phone
No. You are simply accessing built-in menus. Sharp includes these for service centers.