my data plan only use 3g (umts) and not 3.5g (hsdpa)... but my android always switch 3g to and looking for hsdpa back and forth and drain battery much faster
when umts change to hspda (icon change from 3g to H) then it use battery power.. in my case i use 3g (umts and not 3.5g or hspda ) data plan only... but android keep searching hspda signal and THIS is when battery used the most (the process) and EVEN when my area have 3.5g covered but because i use 3g only data plan... then the back and forth process (3g<->H) will kep coming and drain my battery fast
so... i look for any kind of workaround so our android keep stay in 3g (umts) and not drain any unnecessary battery power searching for hspda
maybe android "thinks" 3g/umts and 3.5/hspda as the same?? android categorize umts and hspda as one big fat 3G network
i wonder why newer os like android doesnt have this kind of feature in winmo there is an option :
disable hspa = so hspda disabled.. AKA 2G or UMTS only
enable hspa = enabled hspda, hspa, hsupa etc.. AKA 2G, UMTS and HSPDA
is there any tweak/program/widget/application that can enable 3g (umts) only?
i think it is settings>wireless networks> network mode> GSM
if not try *#*#4636#*#*
go to phone information and you can select preferred network type.
If this helps press thanks!
uhh i have tried that before (and choose wcdma only aka 3g only).. and no luck
reason like i sadi before android "thinks" 3g/umts and 3.5/hspda as the same, android categorize umts and hspda as one big fat 3G network...
so 3G in android is umts+hsdpa, while i want umts only
To get 3G UMTS only
Firstly make sure your device is rooted.
Download Root Explorer, if you don't have
Go to your system folder
Mount it as read and write (r/w)
Find Build.prop
Select and Hold it, and the options will appear
Select the open with button
Select the text editor
Scroll down to find ro.ril.hsxpa=1
Change the number to your desire network (0 or 5 = UMTS , 1 = HSDPA only, 2 = HSDPA & HSUPA)
For your case change it to 5 and it should be like this ro.ril.hsxpa=5
Save it
Then reboot
Now it should be running 3G instead of H
This worked for my HTC Desire HD
don't work for me.
In ro.ril.hsxpa=X, I have written x=0 and I'm still leaving a H
Using Xperia Mini Pro (sk17i)
UPDATE April 21, 2012
I've found the P999 Qualcomm MDM6600 Calibration Configuration data at:
http://csmg.lgmobile.com:9002/swdat..._11/[TachyonV34]LGP999_110401_Calibration.zip
It contains the WCDMA and GSM Calibration data for the P999. It shows that the only P999 MDM6600 calibration data used is for the following bands:
-<TACHYON>
-<HEADER> <TYPE>Calibration Configuration</TYPE>
<USAGE>Tachyon</USAGE>
<VERSION>1.0.0</VERSION>
<DATE>2010.11.16 10:46</DATE>
<AUTHOR>Seol Joong Hwan</AUTHOR>
</HEADER>
-<BODY>
-<MODEL_INFORMATION>
<MODEL_NAME>LGP999</MODEL_NAME> <BUYER_NAME>AWC</BUYER_NAME> <BIN_VERSION/>
<HWVER/>
<BAUDRATE>115200</BAUDRATE>
-<BAND_INFORMATION>
-<SYSTEM NAME="WCDMA">
<BAND>WCDMA_BAND1</BAND>
<BAND>WCDMA_BAND4</BAND>
</SYSTEM>
-<SYSTEM NAME="GSM">
<BAND>GSM900</BAND>
<BAND>GSM850</BAND>
<BAND>DCS1800</BAND>
<BAND>PCS1900</BAND>
</SYSTEM>
</BAND_INFORMATION>
-<TACHYON>
-<HEADER>
<TYPE>CallSetup Configuration</TYPE>
<USAGE>Tachyon</USAGE>
<VERSION>2.0.0</VERSION>
<!-- HANDOVER OPTION ADDED IN GSM NST SETUP -->
<DATE>2007.09.22 08:30</DATE>
<AUTHOR>Seol Joong Hwan</AUTHOR>
</HEADER> -<BODY>
-<MODEL_INFORMATION>
<MODEL_NAME>LGP999</MODEL_NAME> <BUYER_NAME>AWC</BUYER_NAME>
-<BAND_INFORMATION>
<!-- ROWCOUNT => 해당 Phone이 지원하는 SYS_TYPE의 수.-->
-<SYS_TYPE NAME="HSDPA">
<!-- NAME => 지원하는 System type 명 ex) AMPS, CDMA, WCDMA, GSM, GPRS, EVDO, HSPA -->
<!-- ROWCOUNT => 선택 System에서 Phone이 지원하는 BAND의 수 -->
<BAND>WCDMA_BAND1</BAND>
</SYS_TYPE>
-<SYS_TYPE NAME="WCDMA">
<!-- NAME => 지원하는 System type 명 ex) AMPS, CDMA, WCDMA, GSM, GPRS, EVDO, HSPA -->
<!-- ROWCOUNT => 선택 System에서 Phone이 지원하는 BAND의 수 -->
<BAND>WCDMA_BAND1</BAND>
<BAND>WCDMA_BAND5</BAND>
</SYS_TYPE> -<SYS_TYPE NAME="GSM">
<!-- NAME => 지원하는 System type 명 ex) AMPS, CDMA, WCDMA, GSM, GPRS, EVDO, HSPA -->
<!-- ROWCOUNT => 선택 System에서 Phone이 지원하는 BAND의 수 -->
<BAND>DCS1800</BAND>
<BAND>GSM900</BAND>
<BAND>PCS1900</BAND>
<BAND>GSM850</BAND>
</SYS_TYPE>
</BAND_INFORMATION>
</MODEL_INFORMATION>
Sequence Configuration Tachyon 1.0.0 2007.09.22 08:30 Seol Joong Hwan QUALCOMM LGP999 AWC xx 115200 WCDMA_BAND1 DCS1800 GSM900 PCS1900 GSM850 3G_QCT_COM 4.2 3.0 PHONE_POWER_OFF,SLEEP1000,D1FF,SLEEP2000,PHONE_POWER_ON PHONE_POWER_OFF,SLEEP1000,D2FF LGE Android 3 YES YES YES YES YES YES YES YES YES 70000 CHANGE_DMSS NVC CHANGE_FTM CAL_CHECK_INIT WCDMA,WCDMA_BAND1,THERM WCDMA,WCDMA_BAND1,XO WCDMA,WCDMA_BAND1,TX HDET WCDMA,WCDMA_BAND1,TX COMP WCDMA,WCDMA_BAND1,TX LIMIT WCDMA,WCDMA_BAND1,RX WCDMA,WCDMA_BAND4,TX HDET WCDMA,WCDMA_BAND4,TX COMP WCDMA,WCDMA_BAND4,TX LIMIT WCDMA,WCDMA_BAND4,RX GSM,GSM900,TX LINEAR GSM,GSM850,TX LINEAR GSM,DCS1800,TX LINEAR GSM,PCS1900,TX LINEAR GSM,GSM900,RX GSM,GSM850,RX GSM,DCS1800,RX GSM,PCS1900,RX SET_RFNV_LOAD SET_CAL_CHECK CHANGE_FTM YES YES YES YES YES NO YES YES YES NO YES NO NO NO YES YES YES YES YES NO YES YES YES NO YES NO NO NO YES YES YES YES YES NO YES YES YES NO YES NO NO NO YES YES YES YES YES YES YES YES NO YES NO NO NO YES YES NO YES YES YES YES YES YES NO YES NO NO YES YES NOS NO NO NO NO YES YES YES YES YES YES YES YES NO YES NO NO YES NO NO NO NO NO
MDM6600 calibration data is needed to enable the other bands to work. If someone supplies the calibration data from another phone which has the MDM6600 enabled for the other bands I may be able to integrate it into the P999 MDM6600 calibration data and enable all of the bands.
UDATE January 6 2012
Here is a link to more information about the Qualcomm MDM6200 and MDM6600
80-VR001-3 MDM6200 AND MDM6600 MOBILE DATA MODEM USER GUIDE
http://www.docin.com/p-162606115.html
PREVIOUS:
I've learned a bit about using QXDM Professional and looked at NV memory content with the NV Browser function of QXDM and found that the G2X radio modem is capable of using WCDMA 800, 900, 1800, 1900, 2100 and it appears that the Rx and Tx tuning and power setting parameters for each were done at the factory (I am not certain if every one of those required for practical operation were done for the non-activated channels). I also found references to memory areas reserved for SIRIUS. I have to find where the band setting is located and I think there's a special password to be able to access the restricted features which I will need to get too (It's not the SPC number which is 000000).
I've found the Qualcomm modem AT command reference document which applies to the mdm6600 chip in the LG-P999/G2X and, when I querried the modem to determine what bands it supports, I got the list of available bands/frequencies and the geographical location for each. Apparently, the frequencies can be set through the AT commands but I am not brave enough to try it. It may also be a way to flash the baseband. Maybe someone else has or will who is braver than me and will post their findings.
Here's the reference document:
http://mod-book.ru/files/Gobi2k/Documents/AT_Command_Set_Gobi.pdf
The Band preferences AT command is located on page 36.
I set the phone port as: CP USB and accessed with Windows HyperTerminal with the port set at the one for the LGE Mobile USB Modem driver.
I queried the modem with: AT$QCBANDPREF=?
The modem responded with:
$QCBANDPREF: (0-1),
"1.BC0_A"
"2.BC0_B"
"3.BC0"
"4.BC1"
"5.BC3"
"6.BC4"
"7.BC5"
"8.GSM_DCS_1800"
"9.GSM_EGSM_900"
"10.GSM_PGSM_900"
"11.BC6"
"12.BC7"
"13.BC8"
"14.BC9"
"15.BC10"
"16.BC11"
"17.BC12"
"18.BC14"
"19.BC15"
"20.BC16
"21.GSM_450"
"22.GSM_480"
"23.GSM_750"
"24.GSM_850"
"25.GSM_RGSM_900"
"26.GSM_PCS_1900"
"27.WCDMA_I_IMT_2000"
"28.WCDMA_II_PCS_1900"
"29.WCDMA_III_1700 "
"30.WCDMA_IV_1700"
"31.WCDMA_V_850"
"32.WCDMA_VI_800 "
"33.WCDMA_VII_2600"
"34.WCDMA_VIII_900"
"35.WCDMA_IX_1700"
"36.WLAN_US_2400 "
"37.WLAN_JAPAN_2400"
"38.WLAN_EUROPE_2400"
"39.WLAN_SPAIN_2400"
"40.WLAN_FRANCE_2400 "
"41.WLAN_US_5000"
"42.WLAN_JAPAN_5000"
"43.WLAN_EUROPE_5000"
"44.WLAN_SPAIN_5000"
"45.WLAN_FRANCE_5000 "
"46.Any"
Here's what's on page 36 of the AT command reference document:
Command Description Operation Supported
AT$QCBANDPR
EF=
<persistence>,
<band_indices>
Sets the band
preferences of
the device
Result: Band preferences set
and also saved in NV memory,
based on persistence parameter
Note: For usage information,
enter AT$QCBANDPREF=?
Persistence=1 indicates that the
band setting will be saved
across power cycles.
Cmd will return OK as long as
there is at least one supported
band in the list of bands.
For example, $QCBANDPREF =
1, “27,28” will set the band
preferences to WCDMA 2100
and WCDMA 1900 only.
Also, here's where there are some more AT commands which work:
http://www.pharscape.org/GlobeTrotterGPRShowto#_Toc83808119
And, when the phone is in Engineering Mode, the data from the Engineering Mode pages appears in the HyperTerminal window and changes in real time for the Engineering Mode page displayed on the phone. Here's an example:
+XCGEDPAGE: ITEM_3G : 0 #[ RRC State & Serving Cell Information ] ##RRC State
: DISCONNECTED #S_FREQ : 1588 #S_PSC : 255 #S_RSCP : -90 #S_ECIO: -10 #S_R
SSI : - 80 #Tx Power : 0 #DRX Cycle : 64 #Srxlevel : 25 #Squal : 16 #SIR :
Not_Yet #SIR Target : Not_Yet #BLER : Not_Yet #BLER Target : Not_Yet#####ITEM
_3G : 1 #[ Intra Cell FDD Information ] ## UARFCN PSC RSCP EcIo isAS #N0 :
1588 255 -90 -10 0#N1 : 1588 382 -110 -31 0#N2 : 1588 318 -102 -22 0#N3 : 1588
247 -90 -10 0######ITEM_3G : 2 #[ Inter Cell FDD Information ] ## UARFCN PSC
RSCP EcIo RSSI isAS ######ITEM_3G : 3 #[ Inter RAT Information ] ##ARFCN
BSIC RSSI####ITEM_3G : 4 #[ Current State Information ] ##RAB ID : N/A #RAB I
nfo (UL/DL Bitrate) : 0 / 0 #Cell Selection state : CAMPED_ST_CELL #SRB ID : Not
_Yet #L1 State : L1M_PCH_SLEEP
+XCGEDPAGE: ITEM_RFCAL : 0#[ RFCAL Information ]##PID : OR11S(IMEI removed) #Ezlo
oks : Online #CalDate : 2011.9.20 22:6:17 #IP : 200.71.1.192 #Section: 1#WCD
MA1 : 22.37, 22.45, 0.00 #WCDMA2 : 0.00, 0.00, 0.00 #WCDMA4 : 23.47, 2
3.19, 0.00 #WCDMA5 : 0.00, 0.00, 0.00 #WCDMA8 : 0.00, 0.00, 0.00 #GSM8
50 : 32.70, 32.63, 0.00 #GSM900 : 32.76, 32.71, 0.00 #DCS1800 : 29.40,
29.50, 0.00 #PCS1900 : 30.10, 29.90, 0.00 #LOSS : #-1.06, -1.18, -1.2
4 #-1.54, -1.64, -1.74 #-1.80, -1.79, -2.01 #-2.11, -2.21
This is a very interesting post. So are you saying that T-Mobile didn't really lie about the quad-bands?
FatalityBoyZahy said:
This is a very interesting post. So are you saying that T-Mobile didn't really lie about the quad-bands?
Click to expand...
Click to collapse
The Qualcomm mdm6600 (GOBI 3000) has all of the cell radio bands listed but, apparently, cannot be activated from the hidden menu although they are listed. The AT commands directly control the modem which, apparently, can be used to set the radio bands to any of those the modem is capable of using and to retain the values across reboots of the phone. I am too cowardly to try it, maybe you or someone else will and report back.
Core Memory said:
The Qualcomm mdm6600 (GOBI 3000) has all of the cell radio bands listed but, apparently, cannot be activated from the hidden menu although they are listed. The AT commands directly control the modem which, apparently, can be used to set the radio bands to any of those the modem is capable of using and to retain the values across reboots of the phone. I am too cowardly to try it, maybe you or someone else will and report back.
Click to expand...
Click to collapse
Well, I do have Premium Handset Protection, and T-Mobile is pretty stupid. I'll look into giving it a try, and if anything goes wrong, I'll just tell them my phone has been acting up. ^_^
FatalityBoyZahy said:
Well, I do have Premium Handset Protection, and T-Mobile is pretty stupid. I'll look into giving it a try, and if anything goes wrong, I'll just tell them my phone has been acting up. ^_^
Click to expand...
Click to collapse
The phone will respond with OK if it worked. If it did, you should be able to reset it the same way.
When I used HyperTerminal (any terminal program will work), I used the settings that I got from the control panel information for the LG USB modem driver. Device manager -> LGE Mobile USB Modem -> Advanced -> Advanced Port Settings -> COM Port Number
Setup the terminal with the COM Port number, default bps, 8 data bits, No Parity, 1 Stop bit, No flow control.
You need to check that the radio chips (power amps) that support the other frequencies are in the phone. Else, they won't work.
Have not seen a teardown that shows the radio chips but recall they were not there on original phones.
If you find out 850 MHz CDMA works then ATT folks might take a look at the G2x
Sent from my G2x running Bionix Reloaded
sambodie said:
You need to check that the radio chips (power amps) that support the other frequencies are in the phone. Else, they won't work.
Have not seen a teardown that shows the radio chips but recall they were not there on original phones.
If you find out 850 MHz CDMA works then ATT folks might take a look at the G2x
Sent from my G2x running Bionix Reloaded
Click to expand...
Click to collapse
The radio is the modem, it has the capability built in. Although the frequency/band can be set, the external "glue", such as filters and the correct antenna length, is what is necessary to enable a specific radio frequency to actually work. It's worth trying to find out.
Guys I live in Germany and have this phone. It runs our bands are 900 and 1800 and yours are 850 and 1900. We also get to use american iphones on 3g network once unlocked.
sent from my Google device
jetbruceli said:
Guys I live in Germany and have this phone. It runs our bands are 900 and 1800 and yours are 850 and 1900. We also get to use american iphones on 3g network once unlocked.
sent from my Google device
Click to expand...
Click to collapse
Is your phone the lg p999 or the p990 version? They use different radio modems. The one here is the p999 which uses a qualcomm modem and AWS 1700 MHz band.
Core Memory said:
Is your phone the lg p999 or the p990 version? They use different radio modems. The one here is the p999 which uses a qualcomm modem and AWS 1700 MHz band.
Click to expand...
Click to collapse
P999 is mine
sent from my Google device
jetbruceli said:
P999 is mine
sent from my Google device
Click to expand...
Click to collapse
I see, your phone is a G2X from the USA which runs on 3G when unlocked from T-Mobile. The network you are on must use AWS 1700/2100 for 3G. Which cell phone carrier are you using?
I use o2.de and I used a T-mobile, vodofone.
Nvidia always!
jetbruceli said:
Guys I live in Germany and have this phone. It runs our bands are 900 and 1800 and yours are 850 and 1900. We also get to use american iphones on 3g network once unlocked.
sent from my Google device
Click to expand...
Click to collapse
3g freq are different from 2g. This phone is quadband in 2g so it explains why it works. 3g on germany runs at 2100mhz which is why it works, it does not mean that it supports other 3g frequencies that are mostly used in north america
worldtimezone.net/gsm.html
Sent from my LG-P999 using xda premium
True but if I can use an Att iPhone on 3g then it would mean that my network is the same as att. So this g2x will operate in the att network. Now cdma is another story. We don't have cdma here.
Nvidia always!
Here's info about the UMTS 3G frequency bands:
http://en.wikipedia.org/wiki/UMTS_frequency_bands
And from:
http://en.wikipedia.org/wiki/UMTS
"W-CDMA (UTRA-FDD)
Main article: W-CDMA (UMTS)
UMTS transmitter on the roof of a building
W-CDMA uses the DS-CDMA channel access method with a pair of 5 MHz wide channels. In contrast, the competing CDMA2000 system uses one or more available 1.25 MHz channels for each direction of communication. W-CDMA systems are widely criticized for their large spectrum usage, which has delayed deployment in countries that acted relatively slowly in allocating new frequencies specifically for 3G services (such as the United States).
The specific frequency bands originally defined by the UMTS standard are 1885–2025 MHz for the mobile-to-base (uplink) and 2110–2200 MHz for the base-to-mobile (downlink). In the US, 1710–1755 MHz and 2110–2155 MHz will be used instead, as the 1900 MHz band was already used.[5] While UMTS2100 is the most widely deployed UMTS band, some countries' UMTS operators use the 850 MHz and/or 1900 MHz bands (independently, meaning uplink and downlink are within the same band), notably in the US by AT&T Mobility, New Zealand by Telecom New Zealand on the XT Mobile Network and in Australia by Telstra on the Next G network.
W-CDMA is a part of IMT-2000 as IMT Direct Spread."
I've also added some more information to my Original Post regarding more AT commands I've found and that the phone is broadcasting it's Engineering Mode pages in real time to the terminal.
Changed Radio Bands Successfully!
I decided to take a chance with bricking my phone's radio modem by using a serial terminal and an AT command for the Qualcomm modem to change the modem's radio band. I succeeded!
I used the example AT command in my other post http://forum.xda-developers.com/showthread.php?t=1412064 about the Qualcomm modem AT commands and temporarily changed the radio bands to WCDMA_I_IMT_2000 and WCDMA_II_PCS_1900. My phone disconnected from the network and wouldn't reconnect. I rebooted then used the hidden menu to reset the phone to AWS 1700 and did a search for my network provider and reconnected.
I confirmed this through page 3 of Engineering Mode. When the phone's radio band was the usual one, AWS 1700, page 3 of Engineering Mode stated:
SW EnableBand: 0x0000000102000000
after I changed the radio band, page 3 of Engineering Mode stated:
SW EnabledBand: 0x0000000100400000
I suppose that proves the modem is able to be set to alternative frequencies but I can't test them because my SIM is only for the AWS 1700 band.
So does this mean what I think it means?
richie390 said:
So does this mean what I think it means?
Click to expand...
Click to collapse
Yes, maybe.
Core Memory said:
I decided to take a chance with bricking my phone's radio modem by using a serial terminal and an AT command for the Qualcomm modem to change the modem's radio band. I succeeded!
I used the example AT command in my other post http://forum.xda-developers.com/showthread.php?t=1412064 about the Qualcomm modem AT commands and temporarily changed the radio bands to WCDMA_I_IMT_2000 and WCDMA_II_PCS_1900. My phone disconnected from the network and wouldn't reconnect. I rebooted then used the hidden menu to reset the phone to AWS 1700 and did a search for my network provider and reconnected.
I confirmed this through page 3 of Engineering Mode. When the phone's radio band was the usual one, AWS 1700, page 3 of Engineering Mode stated:
SW EnableBand: 0x0000000102000000
after I changed the radio band, page 3 of Engineering Mode stated:
SW EnabledBand: 0x0000000100400000
I suppose that proves the modem is able to be set to alternative frequencies but I can't test them because my SIM is only for the AWS 1700 band.
Click to expand...
Click to collapse
I'll give it a swirl, I have two SIM Cards from two different providers.
ttaidapos said:
I'll give it a swirl, I have two SIM Cards from two different providers.
Click to expand...
Click to collapse
It is important to use 0 (zero) in the AT control string so that the change is temporary and the setting will revert back to normal when you reboot your phone.
Download RSterm and use it, that's what I used:
http://www.roundsolutions.com/techdocs/#tools
ZTE AT-commands
disable/enable flash cd-drive
AT+ZCDRUN=8 disable
AT+ZCDRUN=9 enable
stay online
AT+ZOPRT=5
check net-/SIMlock
AT+ZSEC?
answer: <SEC_STATUE>,<SEC_ITEMS>
< SEC_STATUE >:
0 Initializing the encryption (Insignificant SEC_ITEMS)
1 Network Lock error. (Insignificant SEC_ITEMS)
2 Network Locked
3 Unlocked or correct MCC/MNC
<SEC_ITEMS>:
0 No action
1 Network lock
2 (U)SIM card lock
3 Network Lock and (U)SIM card Lock
Unlock
+ZNCK="unlock-code"
+ZNCK?
Unlock residual time 0-5
Report signal strength +ZRSSI
Syntax
+ZRSSI parameter command syntax
Command Possible response(s)
+ZRSSI <CR><LF>+ZRSSI:<rssi>,<ecio>,<rscp><CR><LF><CR><LF>
OK<CR><LF>
<CR><LF>+CME ERROR: <err><CR><LF>
Description
This command is used to report signal strength.. Notice the command is used only in platform
6290 and 6246.
Defined values
3G network(registered to 3G network)
+ZRSSI: rssi,ecio,rscp
The unit of Rscp is 0.5dbm ( in 0.5 dBm step with no sign).
The unit of Ecio is 0.5db ( in 0.5 dB step with no sign).
The relation is: 2*rssi=rscp-ecio
e.g.
+ZRSSI: 49,8,106
Rssidbm = -rssi = -49dbm
Eciodb = -ecio/2= -4db
Rscpdbm = - rscp /2= -53dbm
2G network(there is no ecio and rscp value when registered in 2G network ,so set
value of 1000)
e.g.
+ZRSSI: rssi,1000,1000
No network e.g.
+ZRSSI :OK
Notice! the command is used only in platform 6290 and 6246.
Set Operational Mode
AT+ZSNT=0,0,0 (Auto) - Default
AT+ZSNT=1,0,0 GPRS Only
AT+ZSNT=2,0,0 3G Only
AT+ZSNT=0,0,1 GPRS Preferred
AT+ZSNT=0,0,2 3G Preferred
Query Operational Mode
AT+ZPAS?
<CR><LF>+ZPAS:<network>,<srv_domain><CR><LF>OK<CR><LF>
<network>: the type of current network
No Service
Limited Service
GPRS
GSM
UMTS
EDGE
HSDPA
<srv_domain>: service domain
CS_ONLY: CS domain service available.
PS_ONLY: PS domain service available.
CS_PS: CS&PS domain service available.
CAMPED: camped in a cell.
example
Command: AT+ZPAS?
Response: +ZPAS: "GPRS","CS_PS"
OK
Set Band Status +ZBANDI
at+zbandi=0 • Automatic (Auto) - Default
at+zbandi=1 • UMTS 850 + GSM 900/1800
at+zbandi=2 • UMTS 2100 + GSM 900/1800 (Europe)
at+zbandi=3 • UMTS 850/2100 + GSM 900/1800
at+zbandi=4 • UMTS 850/1900 + GSM 850/1900
Notice! the command is used only in platform 6290 and 6246.
HUAWEI MODEM
AT
OK
ATX
OK
ATI
OK
AT^U2DIAG=0
OK
Unlock
+ZNCK="unlock-code"
+ZNCK?
Unlock residual time 0-5
Click to expand...
Click to collapse
This is for PIN code? I do not remember and I have two attempts.