First off here are the details on my phone and setup:
Verizon Samsung SCH-I535
Rooted with Towelroot
Stock 4.4.2
SE For Android set to Permissive
Knox disabled
I'm not a pro at rooting, and really it took me a long time to figure out how to do it for this phone. I've rooted my Droid 1, 2, 3 and Bionic in the past but only after they weren't my daily driver phones so low risk. The reason I rooted was to run the app ARUnchained to mirror my screen over HDMI and have control of my phone through my headunit in the car, a Pioneer AppRadio2 (SPH-DA100). The rooting went well and I can connect and run the app and have full control of my phone from my in dash headunit.
In order to connect to the headunit I need to mirror the screen onto the dash using HDMI. In order to get HDMI out of the GS3 I discovered that there is only 1 specific adapter that can be used, as Samsung didn't go with the standard MHL connection. This adapter is the EPL 3FHU, of which I ordered directly from Samsung because there are many imitations out there that look real but don't function as they should.
I got the MHL adapter and tested it on my 55" TV. I played a movie stored on my phone. Worked great.
Proceeded with the install into my car. I fire up the apps I need and get it running. The screen on my S3 remains steady, but the image in dash on the headunit flickers. Not the entire screen. Just the portion being updated by a data transfer. For example: Google Maps: The status bar/top of my screen remain steady. Whenever the up/down arrows illuminate under the 4G icon the image below the status bar flickers. The bottom of the screen which displays the current street also remains steady. I tried another app: Slacker Radio to stream music. Same deal. Entire screen below the status bar flickers in time with the transfer of data indicated by the 3G/4G connection. This is slightly annoying in the dash of my vehicle especially at night.
I pulled the MHL adapter out to try it again inside on my TV. This time I opened up Slacker there and the problem is duplicated. Tried to stream a YouTube video. Same. As the data is transferred the screen flickers. I tried a different power supply, different HDMI cables etc. All the same result. If I put the phone in airplane mode cutting off all data transfer the screen does not flicker, but that kind of defeats the purpose of having control of my mobile device for Navigation/streaming music in my car. I tried it again connected to my house WiFi and as the WiFi indicator flashes the screen flickers.
If my words aren't descriptive enough I can try to shoot a video and post it up if it helps.
I sent that MHL adapter back and exchanged it for another thinking that it may have been the problem, but the new one does the same thing.
I searched the Googles and saw one other question about the screen flicker over MHL/HDMI with the GS3, but they asked a few questions in one post and the thread got derailed and OP never got an answer on the flicker issue.
Any suggestions as to what I can try next? If it comes down to ditching my S3 for something else that I can easily root that won't have this issue, then I'll even consider doing that.
Thanks!
Verizon Samsung SCH-I535
Rooted with Towelroot
Stock 4.4.2
SE For Android set to Permissive
Knox disabled
I'm not a pro at rooting, and really it took me a long time to figure out how to do it for this phone. I've rooted my Droid 1, 2, 3 and Bionic in the past but only after they weren't my daily driver phones so low risk. The reason I rooted was to run the app ARUnchained to mirror my screen over HDMI and have control of my phone through my headunit in the car, a Pioneer AppRadio2 (SPH-DA100). The rooting went well and I can connect and run the app and have full control of my phone from my in dash headunit.
In order to connect to the headunit I need to mirror the screen onto the dash using HDMI. In order to get HDMI out of the GS3 I discovered that there is only 1 specific adapter that can be used, as Samsung didn't go with the standard MHL connection. This adapter is the EPL 3FHU, of which I ordered directly from Samsung because there are many imitations out there that look real but don't function as they should.
I got the MHL adapter and tested it on my 55" TV. I played a movie stored on my phone. Worked great.
Proceeded with the install into my car. I fire up the apps I need and get it running. The screen on my S3 remains steady, but the image in dash on the headunit flickers. Not the entire screen. Just the portion being updated by a data transfer. For example: Google Maps: The status bar/top of my screen remain steady. Whenever the up/down arrows illuminate under the 4G icon the image below the status bar flickers. The bottom of the screen which displays the current street also remains steady. I tried another app: Slacker Radio to stream music. Same deal. Entire screen below the status bar flickers in time with the transfer of data indicated by the 3G/4G connection. This is slightly annoying in the dash of my vehicle especially at night.
I pulled the MHL adapter out to try it again inside on my TV. This time I opened up Slacker there and the problem is duplicated. Tried to stream a YouTube video. Same. As the data is transferred the screen flickers. I tried a different power supply, different HDMI cables etc. All the same result. If I put the phone in airplane mode cutting off all data transfer the screen does not flicker, but that kind of defeats the purpose of having control of my mobile device for Navigation/streaming music in my car. I tried it again connected to my house WiFi and as the WiFi indicator flashes the screen flickers.
If my words aren't descriptive enough I can try to shoot a video and post it up if it helps.
I sent that MHL adapter back and exchanged it for another thinking that it may have been the problem, but the new one does the same thing.
I searched the Googles and saw one other question about the screen flicker over MHL/HDMI with the GS3, but they asked a few questions in one post and the thread got derailed and OP never got an answer on the flicker issue.
Any suggestions as to what I can try next? If it comes down to ditching my S3 for something else that I can easily root that won't have this issue, then I'll even consider doing that.
Thanks!