为什么手机在欠费之后重新缴费，需要进行一次重新的开关机才能上网？

hycl5410

场景楼主说的很清楚了。我把规范抄一段给大家看看：
3GPP 24.008
4.7.4.2.2        Network initiated GPRS detach procedure completion by the MS
If the detach type IE indicates "re-attach not required", then, depending on the received cause code, the MS shall act as follows:
# 7                (GPRS services not allowed);
        The MS shall set the GPRS update status to GU3 ROAMING NOT ALLOWED (and shall store it according to subclause 4.1.3.2) and shall delete any P-TMSI, P-TMSI signature, RAI and GPRS ciphering key sequence number. The SIM/USIM shall be considered as invalid for GPRS services until switching off or the SIM/USIM is removed. The new state is GMM-DEREGISTERED.
        A GPRS MS operating in MS operation mode A or B in network operation mode I shall set the timer T3212 to its initial value and restart it, if it is not already running.
        A GPRS MS operating in MS operation mode A or B in network operation mode I, is still IMSI attached for CS services in the network.

个人理解，MS充值之后再点任何数据连接都不会有操作（ATTACH,PDP都不会）。因为GPRS已经彻底被它自己给disable了，直到重启或者重新插卡。

hycl5410

yonka 发表于 2012-6-11 03:40
“The SIM/USIM shall be considered as invalid for GPRS services until switching off or the SIM/USI ...

规范就是这么写的，手机厂商要不要遵从是厂商的事情。
这跟规范用 and, or, may, shall 还是must都无关。