What is QCN is a file that contains a copy of the file system (EFS) and contains all the network data
Including serial numbers, IMEI numbers, MEID, ESN can be used to fix network problems on smartphones. The format of the values in this file is decimal, but writing them on the phone is in HEX format. This is an open source qcn file form. You can view through this sample on how
Network data storage
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| Qualcomm QCN Source Code |
-<NvSource>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_ESN_I" subscriptionid="0" id="0">2153456415</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_ESN_CHKSUM_I" subscriptionid="0" id="1">4294967295</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_SCM_I" subscriptionid="0" id="4">42</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_SLOT_CYCLE_INDEX_I" subscriptionid="0" id="5">2</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MOB_CAI_REV_I" subscriptionid="0" id="6">6</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MOB_FIRM_REV_I" subscriptionid="0" id="7">1386</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MOB_MODEL_I" subscriptionid="0" id="8">189</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_CONFIG_CHKSUM_I" subscriptionid="0" id="9">65535</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_PREF_MODE_I" subscriptionid="0" id="10">0,36</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_PREF_MODE_I" subscriptionid="0" id="10">0,36</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_PREF_MODE_I" subscriptionid="0" id="10">0,36</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_PCDMACH_I" subscriptionid="0" id="20">0,283,384</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_PCDMACH_I" subscriptionid="0" id="20">0,283,384</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_PCDMACH_I" subscriptionid="0" id="20">0,283,384</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_SCDMACH_I" subscriptionid="0" id="21">0,691,777</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_SCDMACH_I" subscriptionid="0" id="21">0,691,777</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_SCDMACH_I" subscriptionid="0" id="21">0,691,777</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_NAM_CHKSUM_I" subscriptionid="0" id="24">0,65535</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_NAM_CHKSUM_I" subscriptionid="0" id="24">0,65535</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_NAM_CHKSUM_I" subscriptionid="0" id="24">0,65535</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_A_KEY_I" subscriptionid="0" id="25">0,3373742229,2365610950</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_A_KEY_I" subscriptionid="0" id="25">0,3373742229,2365610950</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_A_KEY_I" subscriptionid="0" id="25">0,3373742229,2365610950</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_SSD_A_I" subscriptionid="0" id="27">0,1021214411,927850500</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_SSD_A_I" subscriptionid="0" id="27">0,1021214411,927850500</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_SSD_A_I" subscriptionid="0" id="27">0,1021214411,927850500</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_SSD_B_I" subscriptionid="0" id="29">0,2818514687,2315356947</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_SSD_B_I" subscriptionid="0" id="29">0,2818514687,2315356947</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_SSD_B_I" subscriptionid="0" id="29">0,2818514687,2315356947</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_COUNT_I" subscriptionid="0" id="31">0,0</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_COUNT_I" subscriptionid="0" id="31">0,0</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_COUNT_I" subscriptionid="0" id="31">0,0</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MIN1_I" subscriptionid="0" id="32">0,3082457,3082457</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_MIN1_I" subscriptionid="0" id="32">0,3082457,3082457</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_MIN1_I" subscriptionid="0" id="32">0,3082457,3082457</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MIN2_I" subscriptionid="0" id="33">0,298,298</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_MIN2_I" subscriptionid="0" id="33">0,298,298</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_MIN2_I" subscriptionid="0" id="33">0,298,298</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MOB_TERM_HOME_I" subscriptionid="0" id="34">0,1,1</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_MOB_TERM_HOME_I" subscriptionid="0" id="34">0,1,1</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_MOB_TERM_HOME_I" subscriptionid="0" id="34">0,1,1</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MOB_TERM_FOR_SID_I" subscriptionid="0" id="35">0,1,1</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_MOB_TERM_FOR_SID_I" subscriptionid="0" id="35">0,1,1</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_MOB_TERM_FOR_SID_I" subscriptionid="0" id="35">0,1,1</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MOB_TERM_FOR_NID_I" subscriptionid="0" id="36">0,1,1</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_MOB_TERM_FOR_NID_I" subscriptionid="0" id="36">0,1,1</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_MOB_TERM_FOR_NID_I" subscriptionid="0" id="36">0,1,1</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_ACCOLC_I" subscriptionid="0" id="37">0,8,8</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_ACCOLC_I" subscriptionid="0" id="37">0,8,8</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_ACCOLC_I" subscriptionid="0" id="37">0,8,8</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_MIN_CHKSUM_I" subscriptionid="0" id="39">0,65535,65535</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_MIN_CHKSUM_I" subscriptionid="0" id="39">0,65535,65535</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_MIN_CHKSUM_I" subscriptionid="0" id="39">0,65535,65535</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_CURR_NAM_I" subscriptionid="0" id="40">0</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_AUTO_NAM_I" subscriptionid="0" id="42">0</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_NAME_NAM_I" subscriptionid="0" id="43">0,83,112,114,105,110,116,0,0,0,0,0,0</NvItem>
<NvItem index="1" encoding="dec" mapping="direct" name="NV_NAME_NAM_I" subscriptionid="0" id="43">0,83,112,114,105,110,116,0,0,0,0,0,0</NvItem>
<NvItem index="2" encoding="dec" mapping="direct" name="NV_NAME_NAM_I" subscriptionid="0" id="43">0,83,112,114,105,110,116,0,0,0,0,0,0</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_ZONE_LIST_I" subscriptionid="0" id="48">120,22439,124,65535,3</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_SID_NID_LIST_I" subscriptionid="0" id="49">22439,124,65535,3</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_DIST_REG_I" subscriptionid="0" id="50">589316,7088156,0</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_BANNER_I" subscriptionid="0" id="71">83,87,95,68,69,70,65,85,76,84,0,0</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_LOCK_CODE_I" subscriptionid="0" id="82">48,56,48,48</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_SEC_CODE_I" subscriptionid="0" id="85">48,48,48,48,48,48</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_FACTORY_INFO_I" subscriptionid="0" id="114">66,83,48,54,83,49,52,49,50,49,50,48,48,48,52,57,53,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0</NvItem>
<NvItem index="0" encoding="dec" mapping="direct" name="NV_CDMA_ERR_SLP_VS_HDET_I" subscriptionid="0" id="140">3,3,3,0,0,0,0,0</NvItem>
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