Phone engineering system
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Mobile phone engineering system
1. Samsung : *#0*#
2. Sony : *#*#7378423#*#*
3. HTC : *#*#3424#*#*
4. LG : 3845#*(with your phone model)#
5. Huawei : *#*#2846579#*#*
6. Lenovo : ####1111#
7. Xiaomi : *#*#6484#*#*
8. Meizu : *#*#36446633#*#*
9. Vivo : *#558#
10. Oppo : *#36446337#