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!

Problem adding event to google calendar (from any app)

I have problem adding event to google calendar (from any calendar app, even its own app) form Le 1 Pro US(Rooted). Every time I try adding an event the phone keep sync it to google calendar multiple times and continue to do so every time it sync calendar(see the picture). It won't stop until I delete them all from the phone and google calendar. Not sure if this happened before it was rooted.
Anyone has this problem?
Any suggestion?
Should I try deleting and reinstall Calendar Storage and CalendarSyncAdpter?

Adding an unsupported language to a custom rom

My phone : Alcatel One Touch Pop C5
System version was 4.2.2 and now it's 5.0.2 (custom rom of course)
So my phone sucks .. Can't run lots of games .. Can't open messenger and whatsapp/Facebook lite at the same time ... Till i found a rom .. An awesome rom which can run lots of games without closing ...
The rom is perfect but it only has 1 problem .. It doesn't have support the Arabic language and i'm an Arabian!
Is there a way to add the Arabic Language (or font) to the system/rom ?
2 screenshots are attached : the first one is from 'About Device'
link : http://imgur.com/Um9p1Lm
the second one to show how Arabic appears .. its like this in every thing (messenger/Keyboard/...)
link : http://imgur.com/PvdSgXL

Adding an unsupported language to a custom rom

My phone : Alcatel One Touch Pop C5
System version was 4.2.2 and now it's 5.0.2 (custom rom of course)
So my phone sucks .. Can't run lots of games .. Can't open messenger and whatsapp/Facebook lite at the same time ... Till i found a rom .. An awesome rom which can run lots of games without closing ...
The rom is perfect but it only has 1 problem .. It doesn't have support the Arabic language and i'm an Arabian!
How can i add the Arabic Language to the system/rom ?
2 screenshots are attached : the first one is from 'About Device'
link : http://imgur.com/Um9p1Lm
the second one to show how Arabic appears .. its like this in every thing (messenger/Keyboard/...)
link : http://imgur.com/PvdSgXL

Adding support for encrypted /data partition into TWRP

Is it possible to make a build of TWRP with support for encrypted /data partitions in TWRP? Currently, if the phone is encrypted, and I want to flash a new nightly of CM 13, then I can't wipe the dalvik cache from TWRP.

Possibility Of Adding A 2nd Nexus 5 Speaker?

Just received my 32Gb Nexus 5 in the mail the other day and realized that the right speaker on the bottom doesn't work. I did some research (thinking it must be a broken speaker) and found that the Nexus 5 only has one speaker for audio on the left side.... Nice.

Back in April I had another nexus 5 (16Gb) that ended up issues with the power button so it bootloops at the google logo but all the other parts work so I have a spare speaker.

Would it be possible to use the speaker from the broken Nexus 5 that I disassembled and some how patch it into the other Nexus 5's speaker and have 2 working speakers?

Just thought it's an interesting idea/possibility.

Tell me what you guys think! :) Thanks.

need help adding support for external usb wifi adapters...OTG USB WIFI kernel module?

I'm searching for this all over xda and net and haven't been successful ,So i followed this guide ,because it seemed to be covering everything in question,and the next page also has a helpful step by step but for a different phone

http://forum.xda-developers.com/show....php?t=2338179

I marked the atheros based wifi card as * and ralink cards as *
And compiled the kernel with ubertc 4.9.4 .it compiled smoothly.i put it in the zip kernel dev provided.flashed it.
But when i tried to use it inside a chroot ubuntu 13.10 (complete linux installer) it doesnt list wifi adapter No matter which one i use . Flashing via fastboot doesn't seem to work either

Dmesg | grep -i usb show the atheros and ralink adapters but lsusb says

unable to initilize libusb -99

then i thought ill compile drivers as modules and manually insmod them still no luck

Then i thought ill compile it inside chroot ubuntu itself but it requests kernel headers for module compiling. apt-get install kernel-headers-generic doesnt work either

Note:
Insmod and modprobe doesnt work in either root terminal
Or chroot environment

It doesnt work with cm11 kernel either

I downloaded stock kernel from HTC dev for the 4.25.651.18 sources and compiled it,most mkbootimg tools does not recognize signed_boot.img I pull from firmware or official ruu to unpack ,mkboot from xialou does,but repacking it doesn't seem to work , modifying stock viperone m8 4.6.1 boot .img and repacking my own compiled zimage-dtb with it repacks successfully but doesn't boot beyond HTC logo and after that just a blank screen,with nothing else

What do i need to make this work.plz help ,im trying desperately for almost 1 month to make it work ,and i think ive looked for it in every nook and crany,

1 more thing i noticed that accessory charger (or something else) which is supposed to enable charging as well as usb host mode at the same time is not selected.is it because m8 is incapable of this feature?is it a hardware limitation?do I need a powered usb hub or a y org cable ? Do I need to modify something in wpa_supplicant ?



I admit im a noob in this matter but please guide me in this

wifi Cards i have

Atheros at9271 based tplink wn 722n
Ralink rt 5370 based tenda w311m

Htc one m8 sprint
Using multirom recovery

Adding Unsupported network bands via headphone jack

As the tittle says, is it possible to add an antenna in the headphone jack that will allow all bands to be supported. Just like you can attach an infrared sensor and nfc smart pay chip via headphone jack. This would be really helpful as many bands are not supported by overseas phones.