I often do live streaming of events and from time to time I am forced to tether my cell to my laptop for internet access. This actually works better than you would expect. Anyway, back in the ICS (Task650 AOKP) days anytime I needed to do this I would use the old *#*#4636*#*# code and select "LTE only". This worked great, it disabled CDMA (so no calls or texts), and most importantly it prevented the phone from switching between CDMA and LTE (which obviously would be disastrous during a live stream).
Now that I am running JB (tried CM10.1 and Task650 AOKP), this doesn't work anymore. Even though LTE works perfectly fine under normal circumstances, when I select "LTE Only" the phone simply disconnects everything and I never get data back. It seems like there was a change in the modem options or something. When I go into Settings->Mobile Networks->Network Mode I can select LTE/WCDMA, LTE/GSM/WCDMA, GSM/WCDMA. If I select any of these options and go back to the phone info screen using the *#*# code, under "preferred network type" it says "Unknown."
I've tried two modems with the same results:
I747MUMLL1
I747MVLLH1
Any ideas on what I can do?
A quick update. I did try the stock modem firmware. No change. I went back to a stock ROM, which no longer accepted the *#*# code, but did accept the *#2263# code which allowed me to select LTE band preference and locked it into LTE. Is there a way to get into this menu from an AOSP ROM? Is this specific to the dialer?
Maybe a APN change could help this but I don't think you can perma lock LTE as it's not available everywhere.
Also, mind if I ask why you wanna have LTE only? It's already set to use LTE when needed, therefor, you don't need to lock it on.
BWolf56 said:
Maybe a APN change could help this but I don't think you can perma lock LTE as it's not available everywhere.
Also, mind if I ask why you wanna have LTE only? It's already set to use LTE when needed, therefor, you don't need to lock it on.
Click to expand...
Click to collapse
Hi BWolf,
I had mentioned it in my first post but the reason I want LTE only is so I can prevent the switching of bands between LTE and HSPDA when I am live streaming. Anytime a switch occurs there's a down period of a few seconds which causes the live stream to freeze. Even with full LTE bars, the phone seems to switch every now and then.
I know it's possible, because I can do it on the stock ROM, and I could do it with the older AOSP ICS ROM's. After decompiling the stock FactoryTest.apk file it appears that everything is controlled using invokeOemRilRequestRaw commands. I'll dig into it a bit further, I'm sure there's a way to replicate the functionality.
Ugh. I was hoping the setting was actually achieved using some sort of simple command send to the baseband. That is not the case. Apparently the whole menu system resides in the baseband, and the serviceModeApp.apk app simply provides a dummy interface to display the choices and respond back with selections.
I think at this point it's a little more work than it's worth. I can always flash a nandroid of a stock rom for the streaming and then flash back afterwards. Not ideal, but it'll have to do.
Well, I've solved it. After more effort than I care to admit to, I've found the cause of a lot of the grief with the network mode settings. I'll leave this info here in case someone else ever comes looking for it.
First off, it appears selecting "LTE only" wasn't working due to some sort of bug either with the radio baseband or with how some of the custom roms deal with the baseband. This bug was persistent across ROM reflashes because persistent data in the baseband remained. It appeared to have fixed itself when I flashed back to a stock rooted rom and did a factory reset. Other people have found this solution to work for other bizarre radio related issues, such as no LTE. Anyway, that fixed the LTE only selection.
In regards to the apparent disconnect between the list of preferred networks and what the radio was actually doing, as it turns out there is a mismatch. At some point in my search I downloaded the CM10.1 source and started digging around. I found in the ril directory the reference-ril.c file which describes the network modes:
Code:
static int net2modem[] = {
MDM_GSM | MDM_WCDMA, // 0 - GSM / WCDMA Pref
MDM_GSM, // 1 - GSM only
MDM_WCDMA, // 2 - WCDMA only
MDM_GSM | MDM_WCDMA, // 3 - GSM / WCDMA Auto
MDM_CDMA | MDM_EVDO, // 4 - CDMA / EvDo Auto
MDM_CDMA, // 5 - CDMA only
MDM_EVDO, // 6 - EvDo only
MDM_GSM | MDM_WCDMA | MDM_CDMA | MDM_EVDO, // 7 - GSM/WCDMA, CDMA, EvDo
MDM_LTE | MDM_CDMA | MDM_EVDO, // 8 - LTE, CDMA and EvDo
MDM_LTE | MDM_GSM | MDM_WCDMA, // 9 - LTE, GSM/WCDMA
MDM_LTE | MDM_CDMA | MDM_EVDO | MDM_GSM | MDM_WCDMA, // 10 - LTE, CDMA, EvDo, GSM/WCDMA
MDM_LTE, // 11 - LTE only
};
These correspond directly to the spinner selections in the phone info activity, which are:
Code:
private String[] mPreferredNetworkLabels = {
"WCDMA preferred",
"GSM only",
"WCDMA only",
"GSM auto (PRL)",
"CDMA auto (PRL)",
"CDMA only",
"EvDo only",
"GSM/CDMA auto (PRL)",
"LTE/CDMA auto (PRL)",
"LTE/GSM auto (PRL)",
"LTE/GSM/CDMA auto (PRL)",
"LTE only",
"Unknown"};
If you compare the two, you can see that the descriptions are not entirely accurate. In particular, many of the mode strings do not indicate they would select EVDO (even though the mask from reference-ril.c clearly shows they would). On devices which don't support EVDO, such as the i747, selecting these modes fail.
With the LTE only network mode now working, I see no need to implement the service mode band selection menu. With that said I did have a few solid strategies for doing it, if I decided to go that route. I peeked into the SecFactoryPhoneTest.apk a little bit, which is the service Samsung uses to communicate between the RIL and userspace java apps. It connects to a local socket named "Multiclient". I found this really bizarre because the telephony stack already connects to the RIL socket, and second the socket is typically named "rild". I believe Samsung has a custom implementation of rild (the linux userspace daemon which passes RIL requests to the kernel) which implements this extra "multiclient" socket. I could not find this socket on my AOSP based ROMs, so I assume it is a proprietary Samsung thing.
Instead of connecting directly to an RIL socket, you might be able to send the bytes associated with pulling up the band selection menu, and then blind sending the correct menu selections. The samsung service uses reflection to try and send RIL requests through the ITelephony interface (and then falls back on making a direct RIL connection). Here's how it does it:
Code:
Method localMethod = localITelephony.getClass().getDeclaredMethod("sendOemRilRequestRaw", new Class[] { [B.class, [B.class });
Now I think the sendOemRilRequestRaw method is another proprietary function, but a similar one exists in the AOSP RIL implementation which is invokeOemRilRequestRaw. Using the same technique you might be able to send raw bytes to the RIL without messing around with sockets.
Ironically I just found in the source a c program that connects directly to the rild and issues commands to select certain radio options. Path is hardware/ril/rild/radiooptions.c. It connects to the debug ril socket to issue commands. A potentially super easy route to issue commands in the future would just be to modify that and run it as a command with superuser from java.
Related
I work in a building with pretty weak signal reception and the only way to keep a decent signal is to force the phone to use the 850MHz band.
On stock Touchwiz, dialing *#2263# allowed me to do so.
Is there an equivalent for AOSP roms?
Been searching the forum and found 2 options, none of which seem to allow specific band selection :
*#*#4636#*#* - Test mode : allows to set connection type (ie. WCDMA, LTE, etc...), but not frequency
*#*#197328640#*#* - Service mode : empty screen. Nothing shown at all except for title "Service mode"
Any other options left ?
Anyone?
I'm afraid my CDMA radio is broken. (At home my LTE signal isn't strong enough.)
I only used it half a day before sending my Verizon HTC One to Colorodo for S-OFF. The signal then seemed fine. I didn't set it up until i got a case for it yesterday. First i installed the GPE by newtoroot (because it was smallest to download) and everything seemed fine but i honestly don't remember, then installed the other 2 custom roms both only giving me LTE only.
Things i've tired so far that haven't worked:
1. I restored my nandroid of the Stock, but got the same thing.
2. I've tried all the custom roms but still can't get CDMA to connect.
3. I tried the RUU, (since a few parts of it are corrupt, i had to leave out system and recovery) then flashed a custom rom
4. I changed some settings in the ##778# menu (copying my Inc 4g)
5. I've installed LTE on off to easily change radio options.
6. I've tried a different sim from another verizon smart phone line
I've also tried combinations of those, but still have not gotten my CDMA to connect.
Does anyone have any other ideas for me?
Also, if someone doesn't mind giving me their settings in the EPST menu (##778# then edit mode) for CDMA Settings, and Modem Settings, I'd appreciate it.
Here's the CDMA and Modem info from my EPST menu. I'm not rooted or S-OFF though so I'm not sure if there will be a difference.
CDMA:
A-Sys Primary: 283
B-Sys Primary: 384
A-Sys Secondary: 691
B-Sys Secondary: 777
MOB_TERM_FOR_HOME: Enable
MOB_TERM_FOR_SID: Enable
MOB_TERM_FOR_NID: Enable
EVRC Enabled: Enable
Home Page: EVRC
Home Orig: EVRC
Roam Orig: EVRC
MODEM:
Slot Cycle Index: 2
Preferred Serving System: Automatic
Preferred Mode: Automatic
HDR Hybrid Preferred: Enable
Clear All MRU Entry: No
Rev. A: eHRPD
1X Diversity: Disable
Good luck! :good:
ok, now i'm getting 3g (CDMA) so i feel like it might not be a broken radio, but it does tell me that i'm roaming and when i make a call I get verizon wanting me to enter a credit card. When i switch to 4g it doesn't tell me that i'm roaming but when I make a call then it immediately disconnects and data works fine (I think verizon still uses CDMA for voice).
I would much appreciate another favor if someone doesn't mind giving me their settings in the EPST menu (##778# then edit mode) for Home SID/ NID
jonno95 said:
ok, now i'm getting 3g (CDMA) so i feel like it might not be a broken radio, but it does tell me that i'm roaming and when i make a call I get verizon wanting me to enter a credit card. When i switch to 4g it doesn't tell me that i'm roaming but when I make a call then it immediately disconnects and data works fine (I think verizon still uses CDMA for voice).
I would much appreciate another favor if someone doesn't mind giving me their settings in the EPST menu (##778# then edit mode) for Home SID/ NID
Click to expand...
Click to collapse
#1 is 26392/65535
all the rest are 0/0
hope this helps.
My Home SID/NID #1 says 73/65535
I'm thinking that and the A-Sys/B-Sys numbers are by region which might be why your phone thinks you're roaming.
penarestel said:
My Home SID/NID #1 says 73/65535
I'm thinking that and the A-Sys/B-Sys numbers are by region which might be why your phone thinks you're roaming.
Click to expand...
Click to collapse
Thanks
Mine said 2004/65535
but that doesn't seem to help anyway.
What did help was changing my prl to an older version, but i'm still not entirely sure what happened and why my phone messed up like it did.
I was able to fixed my problem with the newest decripted ruu from zarboz found here
once i ruu'ed i turned off fast boot in power settings and i turned on gps then i did 2 factory resets. 1 from the rom and 1 from the bootloader.
edit. sorry if i duplicated post in other threads, i just hope when someone else has the problem then it's easy to find and fix.
While messing with the setting in the hidden Menu.
I unlock the T-Mobile LTE Network on My US Cellular GS3
Internet: T-Mobile US LTE
Band: LTE:14
Data Speeds 20mbps down 3.6 mbps up
Mms: Works Flawless
Now My Problem. i cant make a phone call or receive a phone call
My Setting
Hidden Menu: *#22745927
enable hidden menu
*#197328640#
[1] UMTS > DEBUG SCREEN > PHONE CONTROL > NETWORK CONTROL > BAND SELECTION to set GSM Band preference
[2] CDMA > COMMON > NEXT PAGE > NEXT PAGE > PREF MODE SET to select GSM/WCDMA ONLY
SIM>TEST CSIM
WAIT 90 SECONDS THE REBOOT
VOILA! TMOBILE LTE.
Now i have succesfully unlock The Verison GS3 to Tmobile on Edge is there a way to port that radio. to get cell connectivity.
or if anyone want to try to tweak these settings to get more than just LTE connection. or get Voice over LTE working!
I do believe that you need the HSPA radio to make phone calls as T-Mobile does not yet support VoLTE.
http://support.t-mobile.com/docs/DOC-5627
What are you doing for apn setting? There are 3 for tmo-us that I know of. 1)gsm 2)lte 3)lte ipv6. You may have to down load an apn app. Apn manager pro worked well for me or offline sim apn database. Not sure what you use for network mode settings but use build prop editort open it up and find the settings telephony.lteoncdmadevice & telephony.lteongsmdevice use value 1 on both. Add lines if not there. This may open up more network types under setting/...network mode. Google build prop edit or tweaks to find more info. Good luck.
i535 radio/modem
Been thinking about you question to swap modems. Do not use the i535. The modem that would be ideal I believe is the r530m. That is metro PC variant. T-Mobile merged with the.... Do I need to explain more? Any how I can not say it will even work. I will say that T999L is no good. Found out first hand and still dead in the water with it. I would explore the APN settings and network selection modes with build prop mods before flashing. I am not even sure about the LTE bands and who has what and where. If I am able to revive my 530u I will see what I can find.
Where can I get the r530m modem? Can't find it anywhere.
mjstallion said:
Where can I get the r530m modem? Can't find it anywhere.
Click to expand...
Click to collapse
I'm also stuck, bumping an old thread but I need to figure this out
Testicopolicious said:
I'm also stuck, bumping an old thread but I need to figure this out
Click to expand...
Click to collapse
So, is it possible to flash the R530M modem????
Sorry, I did not find the correct forum for a Samsung a3 2015.
I have an a3 2015 that's not finding any network, I suspect the simcard en card reader is functioning because when I start the phone it asks me for my pincode and I'm able the login to the phone.
It has a valid imei, but when i try to call it says "unable the register on network"
Has anybody seen this problem before and knows how to fix it ?
That could be caused by, including but not limited to: Low signal strength (ignore signal bars, phones could select other MNOs and measure that), bands in coverage are not supported by the phone, tower or its backhaul is down for maintenance (or failure), IMEI/SIM (ask your mobile network operator anyway), circuit switching is not supported or out of coverage of the mobile network operator, the CSC in your ROM is not applied correctly for (packet switched) VoLTE (if the mobile network operator supports it on your device), antenna failure, the wrong mobile network operator is manually selected in the network settings, too much interference from neighbour cells on the same channel, bad reselection/handover, the signal has been 'echoed' too much, too far away from the tower for the timing advance, too far away from the tower for the RACH parameters.
Probably not...
Device is locked to LTE only. Or locked in some other way.
1. try to put your simcard on different phone. is it work? if yes, so your sim card reader is broken
2. have u reset your device to its default state? if yes and still the same, u have to reflash the whole rom through ODIN. if u haven't try it, do it now.
3. use another simcard on your phone, see the signal bar, is it there? if no signal, then the answer could be on the number 1 / 2.
4. what u did until u lost your signal?
I've tried the simcard in another phone, it's working.
Can the simcard reader be broken, even if it asks for a sim pincode ?
The phone was working until they pushed some updates, i've tried a factory reset but without success.
I've been reading on forums the problem could be a QCN file or a cert file ?
Is this also replaced when reflash the phone ? ( new a this, so I don't want to brick the phone.)
Where can I find the correct firmware ? Is it country related or just a300fu is fine ?
The thing i find weird about it is the phone is not showing no signal icon without the simcard insert (first icon on the link)
But shows a gray singal icon (like the second icon on the link but completely gray, without the bars).
http://newsandguides.com/samsung-galaxy-s3-android-notification-bar-icon-guide/)
update: when I turn airplane mode on and off, the signal icon is showing signal bars without a sim card insert.
Nobody that can guide me to the correct firmware ?
peter43 said:
Nobody that can guide me to the correct firmware ?
Click to expand...
Click to collapse
You know the phone's model. For the CSC (country),
Use the one in your phone, there are apps to read CSC or use "getprop ro.csc.sales_code" in a terminal emulator.
Use the one of your current location/mobile network operator, the displayed 'location the CSC belongs to' on CSCs might not be accurate. It might not apply correctly.
Use a different one, but some apps might be customized differently, there are indeed some cellular configurations but it's mostly higher features, not basic functionality (though there are some). It might not apply correctly.
For the version, try an upgrade or the same version. Open the stock recovery to fully apply the CSC. For downgrades, the number in the middle of the firmware version can't be reduced. If a downgrade causes the loss of cellular, wipe data or return to the previous firmware.
In most cases I highly do not recommend attempting to restore the EFS, flashing PIT, or downgrading to Lollipop on A 2015.
The signal bars being 'blank' after an insert might be because the tower is simply distant. Calls could work on another phone if the bands (or selected RAT on the phone - 2G/3G/4G) of a nearby tower or VoLTE/VoWiFi is supported. Appears without a SIM, or could be suddenly raised with the SIM, might be because the phone has selected other mobile network operators (not related to your SIM), for measurement and limited use... you can view the transition here *#0011#, there are a few others like this but it should be enough, it is MCC(country)MNC(operator), also called PLMN ID. For the signal strength, while your mobile network operator is selected, RSSI is the signal strength of that channel, RSCP and RSRP is approximately the signal strength of the cell not canceled out by interference, ecio,ecno,rsrq,sinr,rxqual are signal quality.
Maybe the spectrum of the previously good tower has been refarmed (the frequencies previously used on 2G is now on 4G for example), or anything above, or an update somehow broke band support.
Before modifying firmware, try moving around, to connect to other cell towers of the mobile network operator of the SIM, the current band should be in 0011, check which bands your MNO uses, the list of bands the phone supports are on the internet. If for some reason the plmn id isn't in 0011 there are apps to display it.
I found out that *#0011# gives you access to the service menu.
q0000 should give access to the network modes, but this is not working, is there an other code a should use to get access to the network modes menu ?
peter43 said:
I found out that *#0011# gives you access to the service menu.
q0000 should give access to the network modes, but this is not working, is there an other code a should use to get access to the network modes menu ?
Click to expand...
Click to collapse
q0000 probably does not apply to Android Lollipop and above. On lollipop and above, it's *#2263# for band selection, marshmallow, *#2683662# (and others), for channel selection and all that, even fewer on Nougat, even fewer on Oreo. Root might be required, but those codes are available in some CSCs (mostly US carrier ones) for some devices without root. Compare *_keystrings.dat in /system/etc.
For the other kind of network mode, also known as rat (radio access technology), 2g/3g/4g, apps might be able to open 4636 without root, there's the full selection.
Tried both codes but without result ...
The phone is running Android 6.01
Not registered on Network
Hi, I have the same problem with my samsung galaxy a3 2015. I tried several ways to fix it such as flashing stockrom,factory reset And even then tried a custom roms but still have this issue. This issue can be only Fixed by replacing network I.C to a New one.
Its only the problem of network i.c .
Hello.
AT&T has disabled all the international GSM\LTE bands on Z999, making it unusable outside of USA (at least in countries with GSM 900\1800, UMTS 2100 & LTE B3 & B20, like the one I live in). In order to change that, we need to turn on the Qualcomm USB Diag port, and for this, the phone has to be rooted.
I've been trying to root my AT&T Z999 for some time now, without any success, unfortunately. However, searching forums after forums, sites after sites, I've discovered the surprisingly easy method of turning on the Diag port without root.
It appears, that Axon M shares a lot with Axon 7, at least the secret key combination to enter Factory Test Mode:
Turn off the phone
Press and hold Power + Vol DOWN buttons until you see the screen "FTM" (see attached screenshot)
You have to press both buttons for the long time, do not release them when the phone starts - just wait until you see the screen. And that's it - you are now in Factory Test Mode and PC sees your phone as "ZTE Handset Diagnostic Interface (COMxx)"
Now, in order to change the bands, you have to follow these guides one after one:
Backup IMEI and NVRAM (ignore all the steps to turn Diag port on, you've done that already)
Unlock LTE bands
Mod edit: Link removed! (this guide in in Russian, but all screenshots are in English & every step is pretty clear)
You would need this tool also.
Please remember, these things are complex, and require considerable experience with Android & Windows. DO NOT START unless you feel confident that you know, what you're doing. I'm serious. Do not try this, if you're not experienced.
WBR,
Draco.
Why mods deleted the link? Google translate exists.
Edit:
I've managed to get the data from the phone using QXDM.
lte_bc_config contained the value of "2251800618993690" now I'm parsing the info how to edit this. Seems like the tutorials don't really match this device. Now I wonder if the chipset can handle invalid data and just input all 1's. Unsupported frequencies just won't work.
Edit2: Writing all 1's didn't work.
Edit3: I wrote this value: "2251802901219551" Calculated with CDMATool. But it seems like the AT&T firmware only finds edge network. I've double checked the bands to be correct ones. So now I will switch to the chinese firmware.
Edit4: Final edit. Turns out you cannot flash chinese firmware on AT&T device. Sigh so my unit is stuck to EDGE/wifi only.
Drakosha said:
Hello.
AT&T has disabled all the international GSM\LTE bands on Z999, making it unusable outside of USA (at least in countries with GSM 900\1800, UMTS 2100 & LTE B3 & B20, like the one I live in). In order to change that, we need to turn on the Qualcomm USB Diag port, and for this, the phone has to be rooted.
I've been trying to root my AT&T Z999 for some time now, without any success, unfortunately. However, searching forums after forums, sites after sites, I've discovered the surprisingly easy method of turning on the Diag port without root.
It appears, that Axon M shares a lot with Axon 7, at least the secret key combination to enter Factory Test Mode:
Turn off the phone
Press and hold Power + Vol DOWN buttons until you see the screen "FTM" (see attached screenshot)
You have to press both buttons for the long time, do not release them when the phone starts - just wait until you see the screen. And that's it - you are now in Factory Test Mode and PC sees your phone as "ZTE Handset Diagnostic Interface (COMxx)"
Now, in order to change the bands, you have to follow these guides one after one:
Backup IMEI and NVRAM (ignore all the steps to turn Diag port on, you've done that already)
Unlock LTE bands
Mod edit: Link removed! (this guide in in Russian, but all screenshots are in English & every step is pretty clear)
You would need this tool also.
Please remember, these things are complex, and require considerable experience with Android & Windows. DO NOT START unless you feel confident that you know, what you're doing. I'm serious. Do not try this, if you're not experienced.
WBR,
Draco.
Click to expand...
Click to collapse
Does this really work? Anyone else tried?
Sent from my SM-N950F using Tapatalk
can you repost the 3rd link?
I can't "repost" the 3rd link, but I can suggest you to open the well-known (and the best) Russian web-site with the name starting with "4" (and having something like "...pda" also), and then add this to the address: /forum/index.php?showtopic=546814&st=4640#entry35702698
Well that russian site has pretty good instructions on how to do it. I tried with one program and it didn't work on AT&T ZTE. I'll try with that qualcomm app again this weekend but if I remember right the last time it had trouble writing because it had no correct service mode code \o/
Drakosha said:
I can't "repost" the 3rd link, but I can suggest you to open the well-known (and the best) Russian web-site with the name starting with "4" (and having something like "...pda" also), and then add this to the address: /forum/index.php?showtopic=546814&st=4640#entry35702698
Click to expand...
Click to collapse
that website's address ends with ".RU", doesnt it?
i accessed that website as your given link, but i cannot see any related threads about ZTE on that, seems all they disscussed about is Lenovo K910SS. was something wrong with my searching?
gaosilver1000 said:
that website's address ends with ".RU", doesnt it?
i accessed that website as your given link, but i cannot see any related threads about ZTE on that, seems all they disscussed about is Lenovo K910SS. was something wrong with my searching?
Click to expand...
Click to collapse
Every Quallcomm device has almost the same NVram configuration rules, the difference is usually on how to enable diagnostic port, but for Z999 I have figured that out already. So, for the configuration process, every Quallcomm guide should work.
I've successfully enabled Z999 to work with 2G & Edge in my country using these guides. 3G & LTE don't work yet, but I'm sure they will eventually. I don't believe Z999 lacks the hardware ability to use LTE B3 & B20 (and other bands), it has to be something wrong with NVram parameters.
For me 2G and Edge worked out of the box in Finland. Tried to enable more but only thing that changed was power usage. Not worth it
Drakosha said:
Every Quallcomm device has almost the same NVram configuration rules, the difference is usually on how to enable diagnostic port, but for Z999 I have figured that out already. So, for the configuration process, every Quallcomm guide should work.
I've successfully enabled Z999 to work with 2G & Edge in my country using these guides. 3G & LTE don't work yet, but I'm sure they will eventually. I don't believe Z999 lacks the hardware ability to use LTE B3 & B20 (and other bands), it has to be something wrong with NVram parameters.
Click to expand...
Click to collapse
It means success unlock 2G/EDGE, not yet with 3G and LTE? When buy the device, it can use other carrer to call and 2G.
When you finger out the way to unlock LTE, please share me.
by the way, do you have the way to enter fastboot mode? I tried the "volunm + &power button" but it just do a normal restart into android.
Fair warning to everyone trying this, make sure you actually do a backup of your IMEI. I didn't and after screwing something up my SIM is no longer detected, and my IMEI is no longer available.
Hello folks!
I have an AT&T phone. I cannot connect to ANY (even EDGE) network!
I modified the configuration several times:
---
I have EDGE with this config:
00441: 0 and 0xFFFF
00946: 0 and 0x06A8
01877: 1677472
02954: 0
06828: 524356
06829: 524356
I got no LTE
---
test2:
06828: 524485
06829: 524485
I got no LTE
----
00441: 0xffff (but 0x380 is recommended)
00946: 0xff8
02954: 0 and 805765120
01877: 3460734838925427584
06828: 1904863
06829: 1904863
I got no LTE, just continous dropping network, useless config.
----
00441: 896
00946: 0 and 0x140
02954: 0 and 131072
01877: 562949974393728
Only edge network, error while searching for networks.
----
06828: 524485
06829: 524485
I have EDGE with this config, but no LTE.
----
Anyone has a good and working LTE mode?!
edit: "The bands on the AT&T z999 are: 2, 4, 5, 12, 29, 30, and 66. "
So, there won't be any Band 1,3,20 for us?!
Thanks!
No one has gotten LTE work on AT&T model. I wouldn't try this.
hene193 said:
No one has gotten LTE work on AT&T model. I wouldn't try this.
Click to expand...
Click to collapse
I had nothing, now I have EDGE, so I am glad to did that modifications...
Drakosha said:
Every Quallcomm device has almost the same NVram configuration rules, the difference is usually on how to enable diagnostic port, but for Z999 I have figured that out already. So, for the configuration process, every Quallcomm guide should work.
I've successfully enabled Z999 to work with 2G & Edge in my country using these guides. 3G & LTE don't work yet, but I'm sure they will eventually. I don't believe Z999 lacks the hardware ability to use LTE B3 & B20 (and other bands), it has to be something wrong with NVram parameters.
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Have you been able to make 3G & LTE work? I just got my ZTE AXON M from ebay and since I can't use data or make calls/unlock the phone I was thinking of trying this.
Drakosha said:
Every Quallcomm device has almost the same NVram configuration rules, the difference is usually on how to enable diagnostic port, but for Z999 I have figured that out already. So, for the configuration process, every Quallcomm guide should work.
I've successfully enabled Z999 to work with 2G & Edge in my country using these guides. 3G & LTE don't work yet, but I'm sure they will eventually. I don't believe Z999 lacks the hardware ability to use LTE B3 & B20 (and other bands), it has to be something wrong with NVram parameters.
Click to expand...
Click to collapse
Can I describe in detail how to enable 2G?
Thanks !
Hello guys. I've tried all configs mentioned by @ugynok and some of my own - the result is still the same, no 2G network and all options in mobile connections are disabled not clickable. Can you please advice which config worked for you to enable 2G network?
Any luck?
Hi all. Was anyone able to get a useful set of bands working in the UK for this phone?
Many thanks.
V
Drakosha said:
I can't "repost" the 3rd link, but I can suggest you to open the well-known (and the best) Russian web-site with the name starting with "4" (and having something like "...pda" also), and then add this to the address: /forum/index.php?showtopic=546814&st=4640#entry35702698
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It's the mistake. I don't know how to delete it, sorry.