TracFone Developers

Device Development => Samsung Galaxy Grand Prime => Topic started by: coppyhop on January 07, 2018, 01:21:35 pm

Title: How to Get Cellular Working on non-stock based ROMs
Post by: coppyhop on January 07, 2018, 01:21:35 pm
Hello everyone! I'm starting this thread to post any info I have about getting Cellular Service and data in the galaxy grand prime (SM-S920L). As of right now the only working solution I have is to use a Lineage OS build prior to July 2017. Specifically, This https://download.msm8916.com/LineageOS/gprimeltetfnvzw/20170608/ build is what I used and I can confirm it has working cellular and data. The Reason this occurs in the newer versions is that the current maintainer replaced the Modem/Radio firmware with a different one that seems to be incompatible with the device's cellular. Maybe once I get the time I can see if I can get a Build of 14.1 with the old driver working.
Title: Re: How to Get Cellular Working on non-stock based ROMs
Post by: Haruo on January 07, 2018, 05:42:45 pm
Yeah, same here. I've never done it before, but I thought about forking the creator's tree from the commit before his radio changes and then incorporating any future updates (security patches, etc.) I'm making the assumption that we are both using the same ROM (by kentone and vince2678), of course.

The build I'm using right now is 20170828, right before Vince removed the prebuilt RIL (https://github.com/Galaxy-MSM8916/android_device_samsung_gprimeltetfnvzw/commits/lineage-15.0?before=dfd3be39f5ff063456495fe207050dc4e385bc1a+35). Everything works, but on the subsequent builds, I couldn't get it to work. The only thing is that my carrier is reported as Verizon Wireless. Doesn't bother me, though.

Seeing that you confirmed working modem/radio, I assume you got root?

EDIT:  I thought something seemed different... I read that you have the Straight Talk edition. I have the TracFone edition.
Title: Re: How to Get Cellular Working on non-stock based ROMs
Post by: coppyhop on January 07, 2018, 07:39:05 pm
I have the Tracfone version, sorry if I have said otherwise elsewhere. Yes I did get root, it was an issue with the Re-Activation lock.
Title: Re: How to Get Cellular Working on non-stock based ROMs
Post by: coppyhop on January 08, 2018, 08:38:02 pm
Alright guys, in the next couple days I should have a thread on rooting and installing a custom rom with working cellular.
Title: Re: How to Get Cellular Working on non-stock based ROMs
Post by: coppyhop on January 08, 2018, 10:41:40 pm
I have forked the Git project and reverted the commit for removing the prebuilt RIL. https://github.com/Coppyhop/android_device_samsung_gprimeltetfnvzw as of right now it only supports Lineage 14.1 but I'll get the other branches as well. Try compiling lineage using this new fork and tell me how it works.
Title: Re: How to Get Cellular Working on non-stock based ROMs
Post by: coppyhop on January 08, 2018, 10:48:10 pm
I personally won't be able to compile until this weekend, and that's only a maybe. I have to overwrite my Antergos partition with Ubuntu for full build compatability.