All Oppo Network Unlock Code - Remove Network Lock On Oppo Phones [update-2019]

All Oppo Network Unlock Code - Remove Network Lock On Oppo Phones Using Master Code Free
oppo f1 network unlock
oppo network unlock

oppo unlock network 

All codes:
these are the codes

A33f *#3988691#
A37f *#3988691#

for f1s there are two codes, if one fails try another
Codes for F1S
F1s *3988700#
f1s *#3988691#
f1s..*#69188692#

Oppo A37.f1s ALL ....*#3988691#
Oppo F1 *#3982591#
Oppo F1+ *#3988012#
Oppo R5 *#3988341251#
Oppo FIND 5 *#392102191#
OPPO JOY *#302121691#
OPPO S7 *#39802121451#
OPPO NEW..A57 all *#3980612565046691#

Oppo A83 CPH1729 Network Unlock Done
(Without BOX/Without Flash/Without Any Software)
Just Dial *#39757#

now this is
master code *#3988691#