建设体育用品网站分析网站访问统计js代码
1、问题描述
00101测试卡无法注册LTE网络,modemlog中发现终端未发起Attach请求,对比正常注册非正常注册的版本,发现正常的多出了ims apn。可以通过AT+CGDCONT?来查询modem APN参数。

2、问题分析
目前Modem是一套,没有相关修改。因此需要排查上层APN 下发区别。
正常日志
06-24 15:40:45.537675  1493  1543 D RmcDcReqHandler: [0][isSupportSelfSetInitialAttach] : cardType = 2
 06-24 15:40:45.537697  1493  1543 D RmcDcReqHandler: [0][isSupportSelfSetInitialAttach] : [0] of apn, supportedTypesBitmask = 512
 06-24 15:40:45.537717  1493  1543 I RmcDcReqHandler: [0][handleIfVendorSelfIaNeeded] : Send EIAAPN, iaMode = 0
 06-24 15:40:45.537735  1493  1543 I RmcDcReqHandler: [0][handleIfVendorSelfIaNeeded] : send EIAAPN, apn = 
 06-24 15:40:45.537762  1493  1520 D RfxRilAdapter: responseToRilj, request id = 128
 06-24 15:40:45.537787  1493  1543 I AT      : [0] AT> AT+EIAAPN=*** (RIL_CMD_READER_4, tid:512323509488)
异常日志,没有下发AT+EIAAPN
06-21 12:45:32.543734  1433  1475 D RmcDcReqHandler: [0][isSupportSelfSetInitialAttach] : cardType = 2
 06-21 12:45:32.543760  1433  1475 D RmcDcReqHandler: [0][isSupportSelfSetInitialAttach] : [0] of apn, supportedTypesBitmask = 64
 06-21 12:45:32.543782  1433  1475 D RmcDcReqHandler: [0][isSupportSelfSetInitialAttach] : [1] of apn, supportedTypesBitmask = 2048
 06-21 12:45:32.543800  1433  1475 D RmcDcReqHandler: [0][isSupportSelfSetInitialAttach] : [2] of apn, supportedTypesBitmask = 512
 06-21 12:45:32.543844  1433  1455 D RfxRilAdapter: responseToRilj, request id = 128
 06-21 12:45:32.544129  2285  2556 D RILJ    : [0146]< SET_DATA_PROFILE  [PHONE0]

排查MTK RILD代码,当APN仅仅只有IMS 和 EMEREGENCY APN时,允许设置IA APN,否则不允许设置IA APN

异常Log中上层APN中,存在如下类型,多出XCAP APN,导致问题。

3、解决方式
方法1、删除XCAP APN
方法2、增加default 或IA APN
