[Device Reviews and Information] srkonus:
In the settings, all match german or germany. This is my build.prod:

ro.build.id=JDQ39

ro.build.display.id= G4S BORX ROM GOLD V.3

ro.build.version.incremental=eng.scm.1395975610

ro.build.version.sdk=17

ro.build.version.codename=REL

ro.build.version.release=4.2.2

ro.build.date=20140624

ro.build.date.utc=1397058070

ro.build.type=user

ro.build.user=borx

ro.build.host=

ro.build.tags=test-keys

ro.product.model=JiaYu G4S

ro.product.brand=JiaYu

ro.product.name=Android

ro.product.device=Android

ro.product.board=Android

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.manufacturer=JiaYu

ro.product.locale.language=de

ro.product.locale.region=DE

ro.wifi.channels=

ro.board.platform=

ro.build.product=Android

ro.build.description=android-user 4.2.2 JDQ39 eng.borx.1397057383 test-keys

ro.build.fingerprint=thl/android/android:4.2.2/JDQ39/1397057383:user/test-keys

ro.build.characteristics=default

ro.opengles.version=131072

ro.mediatek.version.release=thl_T100S.159C.A2.JB9.FHD.RU.16P256.IMX135.MT6592GW.20140408

ro.mediatek.platform=MT6592

ro.mediatek.chip_ver=S01

ro.mediatek.version.branch=ALPS.JB9.MP

ro.mediatek.version.sdk=1

# Divice INFO

ro.bird.cpu_name=MTK6592 Octa Core

ro.bird.max_cpu_freq=1.7GHz

ro.bird.system_total_memory=2G

ro.bird.phone_total_memory=16G

ro.bird.cpu_frequency=1.7GHz

# Ril

rild.libargs=-d /dev/ttyC0

rild.libpath=/system/lib/mtk-ril.so

ril.current.share_modem=2

ril.external.md=0

ril.first.md=1

ril.flightmode.poweroffMD=1

ril.radiooff.poweroffMD=0

ril.specific.sm_cause=0

ril.telephony.mode=0

persist.radio.fd.counter=15

persist.radio.fd.off.counter=5

persist.radio.fd.r8.counter=15

persist.radio.fd.off.r8.counter=5

fmradio.driver.enable=1

# WiFi

wifi.direct.interface=p2p0

wifi.interface=wlan0

wifi.tethering.interface=ap0

ro.mediatek.wlan.p2p=1

ro.mediatek.wlan.wsc=1

mediatek.wlan.chip=MTK_CONNSYS_MT6592

mediatek.wlan.ctia=0

mediatek.wlan.module.postfix=_mtk_connsys_mt6592

# USB

ro.sys.usb.bicr=yes

ro.sys.usb.charging.only=yes

ro.sys.usb.mtp.whql.enable=0

ro.sys.usb.storage.type=mtp,mass_storage

# Bluetooth

ro.btstack=blueangel

net.bt.name=JiaYu G4S

ro.tool.btname=JiaYu G4S

# IPO

sys.ipo.pwrdncap=2

# Others

ro.tpwake.unlock=true

bird_default_font_size=small

ro.bird.style.naviBar=false

ro.bird.control.naviBar=true

persist.sys.naviBar=false

ro.camera.picture.ratio=1.3333

persist.sys.display.clearMotion=0

persist.clearMotion.fblevel.nrm=255

persist.clearMotion.fblevel.bdr=255

persist.sys.custom_transparency=0

#

# ADDITIONAL_BUILD_PROPERTIES

#

ro.config.ringtone=Nairobi.mp3

ro.config.notification_sound=whisper.ogg

ro.config.alarm_alert=Alarm01.ogg

persist.sys.timezone=Europe/Amsterdam

persist.gemini.sim_num=2

ro.setupwizard.mode=OPTIONAL

ro.gemini.smart_sim_switch=false

ro.gemini.smart_3g_switch=1

bgw.current3gband=0

ro.mediatek.gemini_support=true

persist.mtk.wcn.combo.chipid=-1

drm.service.enabled=false

persist.mtk.anr.mechanism=1

ter.service.enable=0

dalvik.vm.heapgrowthlimit=128m

dalvik.vm.heapsize=256m

dalvik.vm.execution-mode=int:fast

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

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

# Disable USB Debugging notify

persist.adb.notify=0

#Performance tweaks

debug.enabletr=true

debug.qctwa.preservebuf=1

dev.pm.dyn_samplingrate=1

video.accelerate.hw=1

ro.vold.umsdirtyratio=20

debug.overlayui.enable=1

debug.egl.hw=1

ro.fb.mode=1

hw3d.force=1

persist.sys.ui.hw=1

ro.sf.compbypass.enable=0

debug.sf.hw=1

debug.composition.type=c2d

persist.sys.composition.type=c2d

debug.performance.tuning=1

#Enable tile rendering

debug.enabletr=true

#3d performance

persist.android.strictmode=0

ro.min_pointer_dur=1

ro.secure=0

#Media Quality

ro.media.dec.jpeg.memcap=8000000

ro.media.enc.hprof.vid.bps=8000000

ro.media.dec.aud.wma.enabled=1

ro.media.dec.vid.wmv.enabled=1

ro.media.cam.preview.fps=0

ro.media.codec_priority_for_thumb=so

#Liquid Smooth Ui

persist.service.lgospd.enable=0

persist.service.pcsync.enable=0

#Sensor Sleep

# For sensor sleep control

ro.ril.sensor.sleep.control=1

#3G network for speeding up

ro.ril.set.mtu1472=1

#Disable Logers

ro.config.htc.nocheckin=1

ro.config.nocheckin=1

profiler.force_disable_ulog=1

profiler.force_disable_err_rpt=1

#Better battery life:

usb_wakeup=enable

proximity_incall=enable

power_supply.wakeup=enable

ro.config.hw_power_saving=1

ro.config.hw_fast_dormancy=1

ro.config.hw_quickpoweron=true

persist.sys.use_dithering=0

pm.sleep_mode=1

ro.ril.disable.power.collapse=0

#improve battery under no signal -- need test

ro.mot.eri.losalert.delay=1000

#Better signal reception

persist.cust.tel.eons=1

ro.config.hw_fast_dormancy=1

#Signal Tweaks

persist.cust.tel.eons=1

ro.ril.gprsclass=10

ro.ril.hsdpa.category=8

ro.ril.hsupa.category=6

ro.ril.hsxpa=1

#net speed tweaks

net.tcp.buffersize.default=4096,87380,256960,4096, 16384,256960

net.tcp.buffersize.wifi=4096,87380,256960,4096,163 84,256960

net.tcp.buffersize.umts=4096,87380,256960,4096,163 84,256960

net.tcp.buffersize.gprs=4096,87380,256960,4096,163 84,256960

net.tcp.buffersize.edge=4096,87380,256960,4096,163 84,256960

net.tcp.buffersize.hspda=4096,87380,256960,4096,16 384,256960

net.tcp.buffersize.hspa=4096,87380,256960,4096,163 84,256960

#Wireless Tweaks

net.ipv4.ip_no_pmtu_disc=0

net.ipv4.route.flush=1

net.ipv4.tcp_ecn=0

net.ipv4.tcp_fack=1

net.ipv4.tcp_mem=187000 187000 187000

net.ipv4.tcp_moderate_rcvbuf=1

net.ipv4.tcp_no_metrics_save=1

net.ipv4.tcp_rfc1337=1

net.ipv4.tcp_rmem=4096 39000 187000

net.ipv4.tcp_sack=1

net.ipv4.tcp_timestamps=1

net.ipv4.tcp_window_scaling=1

net.ipv4.tcp_wmem=4096 39000 187000

#OPEN DNS

net.rmnet0.dns1=8.8.8.8

net.rmnet0.dns2=8.8.4.4

net.ppp0.dns1=8.8.8.8

net.ppp0.dns2=8.8.4.4

net.dns1=8.8.8.8

net.dns2=8.8.4.4

#Website Bypass

net.dns1=8.8.8.8

net.dns2=8.8.4.4

net.rmnet0.dns1=8.8.8.8

net.rmnet0.dns2=8.8.4.4

#Allow purging of assets

persist.sys.purgeable_assets=1

# Disable strict mode checking

persist.android.strictmode=0

## Scrolling speed

ro.min.fling_velocity=8000

ro.max.fling_velocity=12000

Maybe this helps.