[AT&T, Rogers HTC One X, Telstra One XL] K1llBot:
Every CM/AOKP rom i've ever ran is missing what i believe is appropriate for each provider in build.prop. Since everyone might not have the same service provider. Helpful things specific to those providers get ignored,due to overwhelming work loads,and multiply providers. Dev's can't do everything,so we should be helping out when we can.(my opinion only) Here i have added RIL,Radio,WIFI,HDMI and Bt stack lines for att. Most should notice improvements in download/upload speeds from market or web,Signal normality return and correct icon display,when you know what radio should be on. I have always seen improvements when radio's are set correctly. Feel free to correct me on this,but history shows marked improvements. Below are all the extra's I use listed as they should be added. I use these on both VRB and Avatar with much success. And yes I have working Xloud/Bravia and Clear Phase/Audio on CM10.1. Only tested on 4.2 android.

Correct AT&T apn type.

(default,admin,fota,mms,supl,hipri)

Lines are here

# RIL properties

ro.ril.oem.ecclist=911

ro.ril.enable.a52=0

ro.ril.enable.a53=1

ro.ril.enable.dtm=0

ro.ril.gprsclass=10

ro.ril.hsdpa.category=14

ro.ril.hsupa.category=6

ro.ril.hsxpa=4

ro.ril.fast.dormancy.rule=2

ro.ril.att.feature=1

ro.ril.radio.svn=11

ro.ril.disable.fd.plmn.prefix=23402,23410,23411,23420,27202

ro.ril.enable.sdr=0

ro.ril.enable.gea3=1

ro.ril.enable.ucsq=2

ro.ril.set.mtusize=1410

ro.ril.enable.r8fd=0

ro.ril.disable.cpc=1

ro.ril.multirab.throttling=1

ro.ril.ciq=0

ro.ril.def.agps.mode=1

ro.ril.enable.pre_r8fd=1

ro.ril.fd.pre_r8_tout.scr_off=3

ro.ril.fd.pre_r8_tout.scr_on=0

ro.ril.fd.r8_tout.scr_off=0

ro.ril.fd.r8_tout.scr_on=0

ro.ril.ltefgi=1577974912

mobiledata.interfaces=rmnet0,rmnet1

ro.telephony.default_network=9

DEVICE_PROVISIONED=1

telephony.lteOnGsmDevice=1

rild.libpath=/system/lib/libril-qc-qmi-1.so

rild.libargs=-d /dev/smd0

ro.vendor.extension_library=/system/lib/libqc-opt.so

ro.ril.fast.dormancy.rule=2

# Display/HDMI

ro.hdmi.enable=true

# system prop for opengles version

#

# 131072 is decimal for 0x20000 to report version 2

ro.opengles.version=131072

#

# system prop for Bluetooth Dialup Networking

#

ro.qualcomm.bluetooth.dun=false

# system prop for Bluetooth FTP profile

ro.qualcomm.bluetooth.ftp=true

#

# system property for Bluetooth Handsfree Profile Wide Band Speech

#

ro.qualcomm.bluetooth.hfp.wbs=false

#

#system prop for Bluetooth hci transport

ro.qualcomm.bt.hci_transport=smd

#

# system prop for requesting Master role in incoming Bluetooth connection.

#

ro.bluetooth.request.master=true

#

# system prop for Bluetooth Auto connect for remote initated connections

#

ro.bluetooth.remote.autoconnect=true

# system property for Bluetooth discoverability time out in seconds

# 0: Always discoverable

#debug.bt.discoverable_time=0

# system property for Bluetooth Hardware information

ro.product.bluetooth=4.0

# - display / surfaceflinger -

ro.sf.lcd_density=320

debug.sf.hw=1

debug.egl.hw=1

debug.composition.type=dyn

debug.enabletr=true

ro.hwui.renderer.disable_opaque=true

debug.mdpcomp.maxlayer=3

debug.mdpcomp.limit=1884160

#debug.qctwa.preservebuf=1

# Camera H/W information

ro.product.main_camera = 8M

ro.product.front_camera = 1.3M

# wifi

wifi.softap.interface=wlan0

wifi.softapconcurrent.interface=softap.0

ro.product.wifi = 802.11 a/b/g/n

init.svc.wpa_supplicant=

init.svc.dhcpcd_wlan0=

dhcp.wlan0.autoip=

dhcp.wlan0.dns1=

dhcp.wlan0.dns2=

dhcp.wlan0.dns3=

dhcp.wlan0.dns4=

dhcp.wlan0.gateway=

dhcp.wlan0.ipaddress=

dhcp.wlan0.leasetime=

dhcp.wlan0.mask=

dhcp.wlan0.ooxx=

dhcp.wlan0.pid=

dhcp.wlan0.reason=

dhcp.wlan0.result=

dhcp.wlan0.server=

net.wlan0.dns1=

net.wlan0.dns2=

wifi.wpa_supp_ready=

wlan.driver.status=

# For internal fat file system

ro.phone_fat = 1

Xloud/Bravia lines and yes I have them working on both CM and AOKP.

# XLoud+Clear

ro.semc.sound_effects_enabled=true

ro.semc.xloud.supported=true

persist.service.xloud.enable=1

ro.semc.clearaudio.supported=true

persist.service.clearaudio.enable=1

ro.somc.clearphase.supported=true

persist.service.clearphase.enable=1

# Bravia Engine

ro.service.swiqi.supported=true

persist.service.swiqi.enable=1