[G Pad 10.1 General] hotbyz168:
I did that as well. It is indeed on hspa, confirmed in service mode and site id.

Double double tap screen on worked for me, I think.

FWIW, I copied my build.prop from skinny rom. Not sure it will be of any help for lte connectivity.

# begin build properties

# autogenerated by buildinfo.sh

ro.build.id=KOT49I.V41010d

ro.build.display.id=Skinny_ROM_LGV410_v1.0

ro.build.version.incremental=V41010d.1406542706

ro.build.version.sdk=19

ro.build.version.codename=REL

ro.build.version.release=4.4.2

ro.build.date=Mon Jul 28 19:20:08 KST 2014

ro.build.date.utc=1406542808

ro.build.type=user

ro.build.user=jenkins

ro.build.host=LGEACI2R12

ro.build.tags=release-keys

ro.product.model=LG-V410

ro.product.brand=lge

ro.product.name=e7lte_att_us

ro.product.device=e7lte

ro.product.board=MSM8226

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.manufacturer=LGE

ro.product.locale.language=en

ro.product.locale.region=US

ro.wifi.channels=

ro.board.platform=msm8226

# ro.build.product is obsolete; use ro.product.device

ro.build.product=e7lte

# Do not try to parse ro.build.description or .fingerprint

ro.build.description=e7lte_att_us-user 4.4.2 KOT49I.V41010d V41010d.1406542706 release-keys

ro.build.fingerprint=lge/e7lte_att_us/e7lte:4.4.2/KOT49I.V41010d/V41010d.1406542706:user/release-keys

ro.build.characteristics=tablet

# end build properties

#

# from device/lge/e7lte/system.prop

#

#

# system.prop for e7lte

#

# Use reference RIL for initial bringup

#rild.libpath=/system/lib/libreference-ril.so

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

rild.libargs=-d /dev/smd0

persist.rild.nitz_plmn=

persist.rild.nitz_long_ons_0=

persist.rild.nitz_long_ons_1=

persist.rild.nitz_long_ons_2=

persist.rild.nitz_long_ons_3=

persist.rild.nitz_short_ons_0=

persist.rild.nitz_short_ons_1=

persist.rild.nitz_short_ons_2=

persist.rild.nitz_short_ons_3=

ril.subscription.types=NV,RUIM

DEVICE_PROVISIONED=1

# Start in cdma mode

#

# system props for the cne module

#

persist.cne.feature=1

# Skip /sys/power/wait_for_fb_* nodes and

# force FB to be always on

debug.sf.fb_always_on=1

debug.sf.hw=1

debug.egl.hw=1

debug.composition.type=c2d

persist.hwc.mdpcomp.enable=true

debug.mdpcomp.logs=0

dalvik.vm.heapsize=36m

dev.pm.dyn_samplingrate=1

persist.demo.hdmirotationlock=false

ro.hdmi.enable=true

qcom.hw.aac.encoder=true

#system props for the MM modules

media.stagefright.enable-player=true

media.stagefright.enable-http=true

media.stagefright.enable-aac=true

media.stagefright.enable-qcp=true

media.stagefright.enable-fma2dp=true

media.stagefright.enable-scan=true

mmp.enable.3g2=true

media.aac_51_output_enabled=true

mm.enable.smoothstreaming=true

#9273 is decimal sum of supported codecs in AAL

#codecs:(PARSER_)AVI AC3 ASF AAC QCP DTS 3G2 MP2TS

mm.enable.qcom_parser=37491

# VIDC: debug_levels

# 1:ERROR 2:HIGH 4:LOW 0:NOlogs 7:AllLogs

vidc.debug.level=1

#

# system props for the data modules

#

ro.use_data_netmgrd=true

#2013-08-31 kwangbin.yim@lge.com LGP_DATA_TEMPORARY_PATCH_FOR_KK_APP_TEST[START]

#persist.data.netmgrd.qos.enable=true

persist.data.netmgrd.qos.enable=false

#2013-08-31 kwangbin.yim@lge.com LGP_DATA_TEMPORARY_PATCH_FOR_KK_APP_TEST[END]

#system props for time-services

persist.timed.enable=true

#

# system prop for opengles version

#

# 196608 is decimal for 0x30000 to report version 3

ro.opengles.version=196608

#

# System props for telephony

# System prop to turn on CdmaLTEPhone always

telephony.lteOnCdmaDevice=1

# simulate sdcard on /data/media

#

persist.fuse_sdcard=true

#

#snapdragon value add features

#

ro.qc.sdk.audio.ssr=false

# LGE_UPDATE_S Audio_BSP 2013-11-07 define it model by model

##fluencetype can be "fluence" or "fluencepro" or "none"

#ro.qc.sdk.audio.fluencetype=none

#persist.audio.fluence.voicecall=true

#persist.audio.fluence.voicerec=false

#persist.audio.fluence.speaker=true

# LGE_UPDATE_E

# Reduce Background apps limit

ro.sys.fw.bg_apps_limit=20

# LGE_CHANGE_S Display_BSP disable cabl, use cabc instead of cabl

# Enable/disable cabl

ro.qualcomm.cabl=0

# LGE_CHANGE_E

#property to enable user to access Google WFD settings

persist.debug.wfd.enable=1

##property to choose between virtual/external wfd display

persist.sys.wfd.virtual=0

tunnel.audio.encode = true

#use VERY_HIGH_QUALITY for audio resampler

af.resampler.quality=4

#Buffer size in kbytes for compress offload playback

audio.offload.buffer.size.kb=32

#Enable offload audio video playback by default

av.offload.enable=false

#enable dsp gapless mode by default

audio.offload.gapless.enabled=true

#// LGE_CHANGE_S, [Net_Patch_0300][CALL_FRW][COMMON], 2012-05-25, Airplane Mode Pop-Up display property value {

ro.airplane.phoneapp=1

#// LGE_CHANGE_E, [Net_Patch_0300][CALL_FRW][COMMON], 2012-05-25, Airplane Mode Pop-Up display property value }

# system prop for NFC DT

ro.nfc.port=I2C

# system props for telephony framework

# LGE_CHANGE_S, [SMS_Patch_0001][TEL-FRW-MSG@lge.com][EU,OPEN,NA,AS], 2013-01-22, encode/decode base [

persist.gsm.sms.forcegsm7=1

# LGE_CHANGE_E, [SMS_Patch_0001][TEL-FRW-MSG@lge.com][EU,OPEN,NA,AS], 2013-01-22, encode/decode Base ]

# system props for LockScree

keyguard.no_require_sim=true

# system props for LockScreen

# Define Front key LED feature

lge.hw.frontkeyled=false

# Define props for VVM

ro.horizontalVVM=true

# LGE CHANGE_S, [AUDIO][tomm.lee@lge.com][KR], 2014-01-28, for voip call [

use.voice.path.for.pcm.voip=true

# LGE CHANGE_E, [AUDIO][tomm.lee@lge.com][KR], 2014-01-28, for voip call ]

#

# ADDITIONAL_BUILD_PROPERTIES

#

log.tag.GpsLocationProvider=DEBUG

log.tag.LocationManagerService=DEBUG

log.tag.NlpProxy=DEBUG

log.tag.LocSvc_java=DEBUG

ro.build.target_operator=ATT

ro.build.target_country=US

ro.lge.swversion=V41010d

ro.lge.swversion_short=V10d

ro.lge.swversion_rev=0

ro.lge.factoryversion=LGV410AT-00-V10d-ATT-US-JUL-28-2014+0

ro.lge.capp_smartcard_ac_gp=false

ro.lge.capp_smartcard_ac_gto=false

ro.lge.capp_smartcard_lgril=false

ro.lge.capp_smartcard_uicc=false

ro.lge.capp_smartcard_smartmx=false

ro.lge.spccheck=true

ro.lge.lcd_default_brightness=168

persist.sys.emmc_size=0

ro.qc.sdk.audio.fluencetype=fluence

persist.audio.fluence.voicecall=true

persist.audio.fluence.voicerec=false

persist.audio.fluence.speaker=false

ime_vibration_pattern=0:25

ime_handwriting_apply=false

bluetooth.chip.vendor=qcom

bluetooth.pan=true

persist.service.bt.support.sap=true

service.bt.support.busytone=true

bluetooth.hfpclient.ecnr=1

lge.normalizer.param=Version2.0/true/12.5/true/10000/0.8/2300/0.47

ro.config.vc_call_vol_steps=6

ro.config.vc_call_vol_default=4

ro.lge.bt_gain_control_factor=0.85

ro.config.ringtone=01_ATT_Firefly.ogg

ro.config.notification_sound=Crystal.ogg

ro.config.alarm_alert=Lifes_Good_Alarm.ogg

ro.config.timer_alert=Timer.ogg

ro.com.google.gmsversion=4.4_r3

ro.setupwizard.mode=DISABLED

ro.livewallpaper.map=DISABLED

ro.com.google.apphider=off

ro.com.google.clientidbase=android-om-lge

ro.com.google.clientidbase.ms=android-att-us

ro.com.google.clientidbase.am=android-att-us

ro.com.google.clientidbase.gmm=android-om-lge

ro.com.google.clientidbase.yt=android-om-lge

ime_theme=true

persist.service.ecc.hiddenmenu=

ro.opengles.version=131072

ro.sf.lcd_density=213

wlan.chip.vendor=qcom

wlan.chip.version=wcn

wifi.lge.patch=true

dhcp.dlna.using=false

wifi.lge.sleeppolicy=0

wifi.lge.offdelay=false

wlan.lge.concurrency=MCC

wlan.lge.supportsimaka=YES

wifi.lge.hanglessid=false

wifi.lge.ftm_test=1

persist.service.cap_keeponoff=on

persist.service.cap_dependmode=on

persist.service.cap_fakestatus=off

ro.sdcrypto.syscall=378

drm.service.enabled=true

ro.lge.audio_soundexception=true

ro.lge.audio_soundprofile=true

ro.afwdata.LGfeatureset=ATTBASE

persist.lg.data.block_ssdp=0

persist.service.privacy.enable=false

net.tethering.noprovisioning=true

persist.lg.data.fd=-1

persist.qcril.disable_retry=true

persist.service.crash.enable=0

audio.offload.disable=0

ro.qualcomm.sensors.qmd=false

ro.qc.sdk.sensors.gestures=true

ro.qualcomm.sensors.pedometer=false

ro.qc.sensors.step_detector=true

ro.qc.sensors.step_counter=true

ro.qualcomm.sensors.pam=true

ro.qualcomm.sensors.scrn_ortn=true

ro.qualcomm.sensors.smd=true

ro.qualcomm.sensors.game_rv=false

ro.qualcomm.sensors.georv=true

ro.qc.sensors.max_grav_no_gyro=50

ro.qc.sensors.max_geomag_rotvec=50

debug.qualcomm.sns.hal=d

debug.qualcomm.sns.daemon=w

debug.qualcomm.sns.libsensor1=w

persist.sys.ssr.restart_level=3

persist.sys.strictmode.disable=true

persist.sys.logkit.ctrlcode=0

ro.lge.irrc.type=sw

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

persist.radio.apm_sim_not_pwdn=1

ro.carrier=unknown

dalvik.vm.heaptargetutilization=0.25

dalvik.vm.heapstartsize=8m

dalvik.vm.heapgrowthlimit=96m

dalvik.vm.heapsize=256m

dalvik.vm.heapminfree=2m

dalvik.vm.heapmaxfree=8m

lge.signed_image=true

ro.lge.lcd_auto_brightness_mode=false

ro.lge.capp_ZDi_O=true

lge.zdi.actionsend=false

lge.zdi.onactivityresult=true

lge.zdi.dragdropintent=false

ro.lge.capp_almond=true

ro.lge.qslide.max_window=2

ro.lge.capp_splitwindow=true

persist.splitwindow.support_all=false

ro.lge.capp_wfd=true

persist.sys.country=US

persist.sys.language=en

ro.telephony.default_network=12

persist.gsm.sms.disablelog=64

telephony.sms.send=false

telephony.sms.receive=true

telephony.lteOnCdmaDevice=0

persist.radio.rat_on=legacy

wlan.lge.softap5g=true

persist.data.tethering_oc=1

wlan.lge.atthotspot=1

persist.sys.dalvik.vm.lib=libdvm.so

net.bt.name=Android

dalvik.vm.stack-trace-file=/data/anr/traces.txt

ro.qc.sdk.izat.premium_enabled=1

ro.qc.sdk.izat.service_mask=0x0

persist.gps.qc_nlp_in_use=1

persist.loc.nlp_name=com.qualcomm.services.location

ro.gps.agps_provider=1