QCN file in samsung devices.
What is QCN file and its function in android device?
QCN means qualcomm calibration network file.Basically QCN file built in in all Samsung Galaxy mobile phone and latest android mobile phone. QCN is the main and sensitive file of network, hidden in the deepest core of mobile phone internal memory file system (in efs folder, where all information of imei and baseband are saved).
What is this QCN?Which phones support QCN file for writing/reading?
All qualcomm based phones supported QCN file especially all SAMSUNG Galaxy and latest ANDRIOD mobile phone devices which are available in market.
When this file need?
If phone EFS erased, wiped – phone calibration erased – and phone not see network/not see 3g/2g/LTE network we need write QCN file for repair these problems
QCN file same for all phones of same models?
No, exist a lot of hardware revision of pcb and lot of different firmware for same phone. Better to have collection of few QCN for same phone model, few times tested and after using same QCN 1st phone can work good and second phone can not work property. So conclusion is this one qcn file are not for the all mobile phones.
Can QCN fix the UNKNOWN BASEBAND phone?
No, but if you write QCN from wrong model, you can got UNKNOWN BASEBAND! Because you can write QCN only if phone modem work. If you see UNKNOWN baseband in your phone so its means modem not do work properly.
Where i can get QCN File?
You can download QCN file from internet but the best and professional way is to copy or read a qcn file from fresh mobile phone active and not from branded mobile phones.
What will QCN file effect imei of mobile phone ?
No, if you using Z3X products for write QCN, this will not touch your NV and imei of your mobile phone.
If we see CERTI(FAIL) problem we can be fixed by writing QCN?
No – CERT (signature for imei) not have any relation to MODEM CALIBRATION.
How to read and write qcn file using Z3X box?
(Q)ualcomm (C)alibration (N)etwork file
*.QCN – original qualcomm format file, compatible with QPST (qualcomm original program).
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