How To Enable Diag>>>
-> Samsung
##3424# Sprint
##3666333# Verizon,USC
*#0808# Others
-> Xiaomi/Redmi
##717717##
##13491##
or Xiaomi Enable Diag
-> Huawei
##2846579##
Project Menu>Background Settings>Menufacture
then open port via hcu or optuplus
-> Vivo
*#585#
*#588#
##558# Quality verification test > Diagnotsic Port
-> Motorola
Motorola>Enable Diag[Factory Enabled]
-> OnePlus
*#801#
-> LT Mobile
CDMA/LTE>Volte>LT Open Diag Menu
-> China Mobile
##717717##
-> OnePlus
*#8011#
*#801#
or
CDMA/LTE>Volte>Oneplus Open Diag Menu
Rndis,diag switch >on
-> Lenovo
##8899##
-> ZTE
1- *#7678#
or
Enable Hidden Menu:
*ZTE*OPENEM# (*983*673636#) Opened Quick Pop-Up.
Diag mode: *983*87274#
or
CDMA/LTE>Volte>ZTE Open Diag Menu
-> LG
LG> Open Diag Menu or Open Diag Menu Sprint
or
*#546368#*model#
or
##7262626##
-> OPPO
*#801# -> Enable Engineer Mode Toggle
-> Samsung
##3424# Sprint
##3666333# Verizon,USC
*#0808# Others
-> Xiaomi/Redmi
##717717##
##13491##
or Xiaomi Enable Diag
-> Huawei
##2846579##
Project Menu>Background Settings>Menufacture
then open port via hcu or optuplus
-> Vivo
*#585#
*#588#
##558# Quality verification test > Diagnotsic Port
-> Motorola
Motorola>Enable Diag[Factory Enabled]
-> OnePlus
*#801#
-> LT Mobile
CDMA/LTE>Volte>LT Open Diag Menu
-> China Mobile
##717717##
-> OnePlus
*#8011#
*#801#
or
CDMA/LTE>Volte>Oneplus Open Diag Menu
Rndis,diag switch >on
-> Lenovo
##8899##
-> ZTE
1- *#7678#
or
Enable Hidden Menu:
*ZTE*OPENEM# (*983*673636#) Opened Quick Pop-Up.
Diag mode: *983*87274#
or
CDMA/LTE>Volte>ZTE Open Diag Menu
-> LG
LG> Open Diag Menu or Open Diag Menu Sprint
or
*#546368#*model#
or
##7262626##
-> OPPO
*#801# -> Enable Engineer Mode Toggle