Adding android functions

I have a Sprint HTC One M9. Mobile data and Wi-Fi hot spot functions are enabled on this phone. I want to add these functions to this phone. I have been looking almost everywhere now, but cannot find info about this. Is this possible, or do I have to install a full custom ROM Android?
Thanks in advance!

Some OTG functions work, others don't?

I've got a D800 LG G2, and I'm having issues with some USB OTG features.
I have a generic USB OTG cable (just USB, no Y connector for power), and up until a month or so ago, it was working perfectly fine.
I was able to use USB flash drives, USB keyboard/mice, my wireless USB headset, my USB mic (Blue Snowball), and my USB wireless Xbox 360 controller receiver.
However, about a month ago, I tried to use a few USB devices, and it was not working properly.
This is what works now:
USB Audio (headset, and microphone) However, my headset's built-in buttons and volume wheel, which previously worked (for pause, and volume), now only act as "select", activating whichever option/app/icon is selected on the screen (almost like a keyboard would)
USB Flash drives somewhat work. I can see the files, but only with ES File Explorer, but it treats it as read-only. I have tried multiple drives.
USB Keyboard/mouse work as normal
My 360 controller does not work at all, but the receiver powers up and the controller appears to sync to it.

OTG Troubleshooter, from the Play Store, shows "USB Host Support" and "Hub USB Device Detected in Android" checked, but shows "No USB Device Detected in Linux"
This does not change regardless of what device I plug in.

Information about my device:
LG G2 D800
Stock Android 5.0.2 (Rooted), ver. D80030f
Kernel Version: Dorimanx 3.4.112 V11.1-LG-D800-PWR-Core+
Dorimanx Profile is set to Performance, CPU max speed set to 2572MHz
Nothing is overheating

I have not tried a whole lot to fix this; I couldn't find much information, and I'm not sure where to start with troubleshooting OTG.

Video functions problems

Hello.

I have really silly problem with my Nexus 5X. After some times video related functions will stop to work (like video recording, video playing, youtube...) until I reboot the phone.
I tried to fully raflash stock ROM and then again install custom ROM. Tested with PureNexus and Chroma. But I didn't see anyone with the same problem.

After the reflash it worked for longest time - 3 days. Then it unfortunately again stopped to work when I was watching on youtube videos. Now it again work for about 1 day.
When it happen I took the logs. I don't know if it's related error but I found this in the log:

Code:

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[13442.750584] type=1400 audit(1467234102.598:321): avc: denied { write } for pid=23139 comm="app_process" name="system@<email omitted>" dev="dm-0" ino=32712 scontext=u:r:shell:s0 tcontext=u:object_r:dalvikcache_data_file:s0 tclass=file permissive=0
[13442.796198] type=1400 audit(1467234102.645:322): avc: denied { write } for pid=23139 comm="main" name="arm64" dev="dm-0" ino=32707 scontext=u:r:shell:s0 tcontext=u:object_r:dalvikcache_data_file:s0 tclass=dir permissive=0
[13442.850242] type=1400 audit(1467234102.698:323): avc: denied { dac_override } for pid=23151 comm="main" capability=1 scontext=u:r:shell:s0 tcontext=u:r:shell:s0 tclass=capability permissive=0
[13442.852497] type=1400 audit(1467234102.698:324): avc: denied { dac_override } for pid=23151 comm="main" capability=1 scontext=u:r:shell:s0 tcontext=u:r:shell:s0 tclass=capability permissive=0
[13442.852805] type=1400 audit(1467234102.698:325): avc: denied { dac_override } for pid=23151 comm="main" capability=1 scontext=u:r:shell:s0 tcontext=u:r:shell:s0 tclass=capability permissive=0

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Logs are in attachment. The problem should be near the end of the logs...

Thanks for any help.

Attached Files

2016-06-29_23.01.zip - [Click for QR Code] (290.7 KB)