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lundi 21 septembre 2015

Verizon slow/failing MMS



XT1060 on Verizon; right now on one of the later CM nightlies but I know I tried several other ROMs in the past (probably all CM based) to no avail. MMS messages sometimes send/download immediately, most of the time they take at least 30 seconds to send and received ones fail download several times. This happens regardless of mobile data settings, WiFi, 3G, LTE, Hangouts, Messaging, etc. I've yet to correlate anything with the success or failure.

I've been digging through logs and the CM sources and the issue seems to stem from initiating the mobile data connection for MMS. At this point I'm deep in the telephony stack and well out of familiar territory. I'm hoping that someone can verify that they're seeing the same issues on Verizon with non-stock ROMs and also hoping that there's someone out there more familiar with the whole telephony stack that can perhaps guide my search in more productive direction. APN settings look correct and the logs confirm that once a data connection is made the right APN is used and messages get sent/received. I've found some "unrecognized command" type errors in RIL logs during the connection setup phase, but haven't sorted out what they are yet.



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