Hello,
I have a problem with my android tablett, with sim card slot.
In the mobile network settin, we can find this :
GSM/WCDMA (auto connect) - automatically switches between 2G/3G modes. When signal strength is low, 3G is favored more
GSM only - 2G only mode. When 2G signal strength is low, you get no data.
WCDMA only - 3G only mode. When 3G signal strength is low, you get no data.
But in my case, i can't switch to " GSM/WCDMA " or " WCDMA only ", it still changing in gsm only, when i change to " GSM/WCDMA " or " WCDMA only ", the setting goes automaticly in " GSM only ".
Is there a way to solve this problem please ?
guigui39 said:
Hello,
I have a problem with my android tablett, with sim card slot.
In the mobile network settin, we can find this :
GSM/WCDMA (auto connect) - automatically switches between 2G/3G modes. When signal strength is low, 3G is favored more
GSM only - 2G only mode. When 2G signal strength is low, you get no data.
WCDMA only - 3G only mode. When 3G signal strength is low, you get no data.
But in my case, i can't switch to " GSM/WCDMA " or " WCDMA only ", it still changing in gsm only, when i change to " GSM/WCDMA " or " WCDMA only ", the setting goes automaticly in " GSM only ".
Is there a way to solve this problem please ?
Click to expand...
Click to collapse
If the tablet does not support the frequencies for 3g from the carrier / SIM card you are using, this behavior is normal. This is just the first thing I thought of, but without knowing the tablet model and carrier, there isn't a way to really know.
The tablet comes from China, it's a MTK model, but the website says that the tablet is 3G built-in and that they have tested all the tablet before shippement ....
guigui39 said:
The tablet comes from China, it's a MTK model, but the website says that the tablet is 3G built-in and that they have tested all the tablet before shippement ....
Click to expand...
Click to collapse
Just because a tablet has 3G capabilities, does not mean it is compatible with 3G from everywhere. There are different frequencies and bands that each carrier have. Imagine them like radio stations. Your favorite radio might be all new and shiny and able to get all your favorite music on your favorite channel like 101.3 FM, but maybe you also like 700 AM, but though there is nothing wrong with your radio, it might not have settings to connect to AM stations. So you can't listen to 700 AM. Just like if your tablet supports 3G on the 900/2100 frequencies, but you are using a carrier who's signal works on 850 and/or 1900, then you are out of luck.
Ok thanks for your information ! It's surely because of that, because the China seller says me that the 3G work in their office, but not in my country !
My tablet is a phablet, i can call ans send sms (these functions work without problems), but if i buy a 3G usb dongle for the tablet with all the WCDMA band and if i put my SIM card into this dongle, i will be able to have 3g internet connexion AND be able to call and send SMS also ?
Most likely that will work as long as the USB dongle supports the frequencies of the carrier. If you post the model and carrier I might be able to provide some less generic info.
es0tericcha0s said:
Most likely that will work as long as the USB dongle supports the frequencies of the carrier. If you post the model and carrier I might be able to provide some less generic info.
Click to expand...
Click to collapse
Thanks, your generic answers is already helpful :good:
So the dongle can simulate an other SIM port with all the mobile functions, but the difference is that i could have 3G network !
My tablet is a MTK6577 and my mobile operator is Orange (France)
Hmm According to the info I found on quite a few sites, Orange (France) uses the 900 and 2100 frequencies for 3G, which I think most of the Chinese tablets and dongles I have seen support that... So you should be fine. I thought at first that the tablet has built in 3g, but thinking about it now, the 3g is ONLY supported by the dongle probably, right?
es0tericcha0s said:
Hmm According to the info I found on quite a few sites, Orange (France) uses the 900 and 2100 frequencies for 3G, which I think most of the Chinese tablets and dongles I have seen support that... So you should be fine. I thought at first that the tablet has built in 3g, but thinking about it now, the 3g is ONLY supported by the dongle probably, right?
Click to expand...
Click to collapse
The seller says me before to buy and again now tht the tablet have 3g built-in, but i'm not sure if the seller says the true or not !
I have downloaded " Mobile uncle tools " and then i went to the " band option " and i can select ALL the GSM band but all the UMTS band ( WCDMA / 3G ) are not available
Yea, that's why I was wondering, because many of the lower priced tablets don't have it built-in (though plenty do, which makes it more difficult since many do not have much documentation on specs and brand names). So this means 1 of 3 things:
1) Seller does not understand the difference between built-in and the dongle - possible language barrier?
2) Seller is lying to you, hoping you will say screw it and buy the dongle.
3) There is something wrong with the tablet.
I hope it is #1 for your sake. My guess is #2. Number #3 doesn't seem likely since the Settings aren't working to change either and it's not showing up in the other tool, which is a well known tool that works for most MTK devices.
es0tericcha0s said:
Yea, that's why I was wondering, because many of the lower priced tablets don't have it built-in (though plenty do, which makes it more difficult since many do not have much documentation on specs and brand names). So this means 1 of 3 things:
1) Seller does not understand the difference between built-in and the dongle - possible language barrier?
2) Seller is lying to you, hoping you will say screw it and buy the dongle.
3) There is something wrong with the tablet.
I hope it is #1 for your sake. My guess is #2. Number #3 doesn't seem likely since the Settings aren't working to change either and it's not showing up in the other tool, which is a well known tool that works for most MTK devices.
Click to expand...
Click to collapse
I'm sure there is no language barrier
I'm thinking that the seller lie to me, i have opened a disput on the website, and i will have to proove what i'm saying ! ( that the tablet is not 3G built-in, i can upload picture and video on the disput webpage of the website )
But the tablet works in 2G mode without problem, so with a 3g dongle it can solve this problem ?
I would think so, but I've never had much reason to look into dongles other than a passing - oh, they can do that...? Because most tablets sold in the States are going to have it built in or just for wifi only. I don't get many people bringing me these kinds of tablets to work on anymore for some reason, so haven't had much chance to play with them lately.
Side question: Do you have an android phone? It might be possible to set it up to tether from it to the tablet as well, depending on the phone, update, and carrier.
Yes i have an other android phone with 3G working on it !
Which phone and what software update does it have? You're using it with Orange as well?
It's an HTC wildfire S and it's android 2.3.2 !
Why ?
Related
This has started to happen recently. I am with AT&T Wireless in Brooklyn, NY. The phone used to carry the signal around almost the whole day and never lose it, but these days if I leave it alone for a while and come back it may say "no service" or "searching..." . If I do a soft reset it may find the signal, or if I turn wireless off and then on (which doesn't always respond, by the way -- on my phone it's called "Turn on Flight Mode". Is that what it's supposed to be called?)
I got this phone two months ago and I am extremely thrilled with it. It's a phone, pocket pc and (video!) camera in one. Sometimes it can achieve great clarity on conversations.
I wish someone can help me out though with some advice or information on upgrading the phone. I have the following questions:
1) What GSM frequencies does this phone use? Can I make it work with AT&T's 850 band? Is anyone familiar with making this phone work better with AT&T wireless?
2) What are some of the icons I see on the top, such as the G in a square? On my old phone that used to mean GPRS connection (i.e. internet/wap). I don't know how to control these things. To turn wireless off, I click a link that says "Turn on flight mode."
3) Finally, what can I do to stop losing the signal?? I tried putting manual selection of the AT&T Wireless network on, and it didn't improve things -- the phone still lost the connection. Once it had the connection thoguh, it didn't drop it -- I don't know why the connection gets lost.
Thanks a bunch for any advice and info,
Greg
Egreg,
I have similar problems. My provider uses GSM 1900 & 850.
1) It uses GSM 900/1800/1900. Unfortunately doesn't have an 850 radio; which is really bad, they should have made it a Quad Band for the price we pay for it. GSM 1900 is really terrible in buildings etc.
2) G Means the radio has negotiated GPRS availability.
3) I've gotten better results with signal locking on by following this thread:
http://forum.xda-developers.com/viewtopic.php?t=7619&highlight=signal
Download the application and set it to "Search GPRS on start GPRS connection". That way it doesn't have to negotiate for GPRS unless you actually want to use it (helps to establish signal lock much better as there is less protocol overhead).
Also now, I'm using Radio Version 1.06 & 1.08 as they seem to reconnect much better than 1.14.
Hope this helps.. Mine is performing much better now, not perfect, but not as annoying.
Thanks. I'll download the GPRS tweak program. Will that alone help the situation a bit? All I need is the voice capability, I won't use GPRS, only the GSM voice -- for internet browsing I may get a WiFi SDIO card from SanDisk.
I thought that changing to some other Radio software would help, but I heard on this site that changing the OS is risky. Can you tell me what I could do to get some a better connection, perhaps guide me through installing a correct version of Radio?
I haven't had this phone for very long, so I'm unsure if I should attempt to upgrade/downgrade.
-Greg
Greg,
I think the tweak program will help things a bit.. As I mentioned I am able to get signal seemingly quicker when I have it set...
I was pretty paranoid about OS upgrades, but I've gone through about 4 versions so far. This week is the first time I ventured out to use a different radio version than what comes with the upgrade.
Try the tweak and see how things go for a while, and then make your decision to upgrade your ROM...
I personally own a 3g WCDMA version of zpad, which i believe it is the same as g tablet from hardware aspect. except with more memory and internal 3g card.
i opened up the zpad and found inside is a mini-pci of Ericsson F3307 WCDMA 3g card for the 3G connection. I knew the linux driver F3307 and F3507g (with built-in GPS) share the same driver source code file, It will be nice to have built-in GPS and therefore I decided to give it a try.
I bought a second hand F3507g and plug into the zpad to replace the original F3307. It looks really good at beginning, the cellphone antenna indicator show full signal strength, When I look into wireless & network setting -> Mobile network -> Access Point Name. I was able to see a full list of provider that available, which means it is working. The SMS works, I even received few message while i was play around with F3507g.
Unfortunately, for unknow reason, i wasn't able to get connect with 3G network, I am not a hardware expert, so not exactly sure why APN is available but just can't get connected.
and as for GPS, nothing show in the setting menu to indicate the availability of GPS.
nothing really got work actaully, but it seems if some know system better can get both 3G and GPS work relatively easy!
anyway, for these who want a 3G on their g tablet, Ericsson F3307 maybe a way to go! the 3g WCDMA firmwares are available here in China.
Tony
I belive we are missing the connector for the module which would rquire delicate soldering
insight3fl said:
I belive we are missing the connector for the module which would rquire delicate soldering
Click to expand...
Click to collapse
The connector is not soldered on, but the soldering isn't that bad since the connector is a through-hole component and the pads are quite large.
That's true, it didn't seems too difficult to solder these. With little patient and some skill, it shall not too difficult to put Ericsson F3307 into the g tablet and get a 3G connection. The 3G firmware is also available in Chinese z-pad forum, and i believe that TNT lite also use 3G firmware.
What really bother me is why F3507g doesn't work in 3G while I was able to receive SMS and get a full list of APN. and I have no idea how to enable the GPS which make this modification all senseless to me.
Tony
ROM
What ROM are you currently running?
Hi, I looked for this in all motorola forums but I couldn't find any real solution.
It seems the latest update to my home network (HSDPA to HSPA) is not well received by my phone. My battery is draining really fast since this upgrade.
Is there a way to enable ONLY HSDPA? I mean, HSPA is great for downloading and uploading, but battery life is really poor. I had very good battery life with HSDPA and I'd like to set my phone to this type of data connection.
Somebody told me to look for some entries in build.prop but I didn't find anything. Does someone know how to do it? Thanks
Menu key -> Settings -> Wireless & networks -> Mobile networks -> Select network ?
Check this out for battery improvement: http://forum.xda-developers.com/showthread.php?t=1198333
ofek said:
Menu key -> Settings -> Wireless & networks -> Mobile networks -> Select network ?
Check this out for battery improvement: http://forum.xda-developers.com/showthread.php?t=1198333
Click to expand...
Click to collapse
Hey, thanks for your help. Well, I'm not suffering battery draining for any other reason. I don't want to use 2G networks only. Just want to change HSPA to HSDPA. That way, I'll go back to having the usual battery consumption.
Any other suggestion?
HSPA is a term that encompasses High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) - if your network was using HSDPA, it was an HSPA network.
Enhanced HSPA (HSPA+) is an enhancement to HSPA that enables download speeds of up to 21Mbps and beyond, up from the typical 7.2Mbps. The Atrix is a 14.4Mbps compatible HSPA+ device.
So you saying you don't want HSPA, but want HSDPA doesn't make any sense. Do you want to disable the increased upload speeds? (HSUPA) or the HSPA+ speed enhancements? (up to 14.4Mbps) I know Samsung have an option to disable certain parts of the network through a hidden network, no idea about the Atrix though.
opethfan3 said:
HSPA is a term that encompasses High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) - if your network was using HSDPA, it was an HSPA network.
Enhanced HSPA (HSPA+) is an enhancement to HSPA that enables download speeds of up to 21Mbps and beyond, up from the typical 7.2Mbps. The Atrix is a 14.4Mbps compatible HSPA+ device.
So you saying you don't want HSPA, but want HSDPA doesn't make any sense. Do you want to disable the increased upload speeds? (HSUPA) or the HSPA+ speed enhancements? (up to 14.4Mbps) I know Samsung have an option to disable certain parts of the network through a hidden network, no idea about the Atrix though.
Click to expand...
Click to collapse
Yes, I want to disable HSUPA (what makes it HSPA) since it's killing my battery. I found a lot of info on Samsung phones but I don't know how to do it in a Motorola mobile
Sorry to bother again. Any solution yet to prevent phone from going on HSPA and stay in HSDPA? Thanks in advance
Just for your information, I found some build.prop tweaks to set HSDPA only, but none of them worked. Any ideas? Am I doing something wrong?
Thanks
joyo22 said:
Hi, I looked for this in all motorola forums but I couldn't find any real solution.
It seems the latest update to my home network (HSDPA to HSPA) is not well received by my phone. My battery is draining really fast since this upgrade.
Is there a way to enable ONLY HSDPA? I mean, HSPA is great for downloading and uploading, but battery life is really poor. I had very good battery life with HSDPA and I'd like to set my phone to this type of data connection.
Somebody told me to look for some entries in build.prop but I didn't find anything. Does someone know how to do it? Thanks
Click to expand...
Click to collapse
BUMP... Still trying to set phone to HSDPA only... Any thoughts?
it can be done, it took me three weeks to figure this out. we had a flood come through here about three weeks ago and it did something to just one antenna on the tower, i dont know what it did but it prevented anybody using a phone on hsupa from using their internet on their phone, i called att multiple times on the issue with no fixing of the tower that was transmitting a bad hsupa signal, the same antenna was transmitting a good "3g" signal or "hsdpa" both of my 4g phones would work anywhere else in the world except for at my house where the bad hsupa signal was. so i knew i had to find a way to downgrade to hsdpa to get my phones operational again, no help from att as to when or even if they would fix the towers. att thought i was crazy because i was the only one complaining about it because everyone on 3g was unaffected, probably only a handful of houses on this one antenna, att locks you out of your phone from being able to go to 3g or 2g, all automatic. 3 weeks of this crap then one day i remembered when the atrix first came out hsupa was locked out, remember all the scoff att got for that one, so here's what i did to shut off hsupa and get my phone back running again:
1. make sure your bootloader is unlocked - not sure if this will brick your phone if it isn't
2. download these radio packages http://www.megaupload.com/?d=V0LDOGFJ
3. flash the one radio that says att shipping radio or something like that through rsd lite (this is the original radio that shipped with the atrix) and don't worry its safe to flash if you are on gingerbread..
4. reboot your phone and you will be locked into 3g or hsdpa thus locking out hsupa
5. if you want to turn hsupa back on just flash the other file
this method worked great for me and got my phone working great again and no hsupa for me anymore until att gets the tower fixed which may be never since i'm probably the only one on this particular antenna with a hsupa phone.
all we need now is a nifty dev that can hack one of these radios to shut off automatic network selection for those of us that are stuck on it.
voltmeter101 said:
it can be done, it took me three weeks to figure this out. we had a flood come through here about three weeks ago and it did something to just one antenna on the tower, i dont know what it did but it prevented anybody using a phone on hsupa from using their internet on their phone, i called att multiple times on the issue with no fixing of the tower that was transmitting a bad hsupa signal, the same antenna was transmitting a good "3g" signal or "hsdpa" both of my 4g phones would work anywhere else in the world except for at my house where the bad hsupa signal was. so i knew i had to find a way to downgrade to hsdpa to get my phones operational again, no help from att as to when or even if they would fix the towers. att thought i was crazy because i was the only one complaining about it because everyone on 3g was unaffected, probably only a handful of houses on this one antenna, att locks you out of your phone from being able to go to 3g or 2g, all automatic. 3 weeks of this crap then one day i remembered when the atrix first came out hsupa was locked out, remember all the scoff att got for that one, so here's what i did to shut off hsupa and get my phone back running again:
1. make sure your bootloader is unlocked - not sure if this will brick your phone if it isn't
2. download these radio packages http://www.megaupload.com/?d=V0LDOGFJ
3. flash the one radio that says att shipping radio or something like that through rsd lite (this is the original radio that shipped with the atrix) and don't worry its safe to flash if you are on gingerbread..
4. reboot your phone and you will be locked into 3g or hsdpa thus locking out hsupa
5. if you want to turn hsupa back on just flash the other file
this method worked great for me and got my phone working great again and no hsupa for me anymore until att gets the tower fixed which may be never since i'm probably the only one on this particular antenna with a hsupa phone.
all we need now is a nifty dev that can hack one of these radios to shut off automatic network selection for those of us that are stuck on it.
Click to expand...
Click to collapse
Well, thanks a lot. I was able to set phone to HSDPA only by flashing the radio you provided. I can't test if it really decreases battery drain but I'm going to try tomorrow with regular use. Thanks a lot!
opethfan3 said:
HSPA is a term that encompasses High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) - if your network was using HSDPA, it was an HSPA network.
Enhanced HSPA (HSPA+) is an enhancement to HSPA that enables download speeds of up to 21Mbps and beyond, up from the typical 7.2Mbps. The Atrix is a 14.4Mbps compatible HSPA+ device.
So you saying you don't want HSPA, but want HSDPA doesn't make any sense. Do you want to disable the increased upload speeds? (HSUPA) or the HSPA+ speed enhancements? (up to 14.4Mbps) I know Samsung have an option to disable certain parts of the network through a hidden network, no idea about the Atrix though.
Click to expand...
Click to collapse
^^This guy gets it.^^
WiredPirate said:
^^This guy gets it.^^
Click to expand...
Click to collapse
I can see why he called it hspa since this is the information displayed by the phone vs when the phone is on hsdpa. or what I call 3.5 g
voltmeter101 said:
I can see why he called it hspa since this is the information displayed by the phone vs when the phone is on hsdpa. or what I call 3.5 g
Click to expand...
Click to collapse
Hey pal, your method worked! After flashing the old radio, the phone is on HSDPA only and battery life is way better, back to Froyo times. I don't really care about the enhanced upload. Download speeds are as good as they were on HSPA.
Thanks a lot.
Can you please upload those radio again? I'm suffering the same thing with my atrix. Thank you.
Hello,
I am running latest LineageOS. I can't seem to get more than about 50mbit on 4G (with ookla speedtest), with same SIM card, on an iPhone7 I get about 150mbit consistently at same location. I am not sure if this is related to 4G+/LTE-A not functioning. I see only LTE text on the top bar.
In another note, a friend of mine is running original OS and he says he gets 50mbit on wifi with max2, with his iPhone7 on same wifi accesspoint he gets 80-90mbit. (he couldnt test 4G because of bad signal quality in his location),
So, first of all, how can I tell if my phone is using 4G+/LTE-A or not? Do you get better 4G speeds?
How can I test where is the bottleneck exactly? Any hints?
Update:
I now made more tests. Cheap Chinese tablet with mtk6797 chip does about 100mbit in the same location.
At home I tried 5g WiFi and when phone said 433mbps, the download speed from samba server was about 48mbit (server is connected to wifi ap directly with gigabit Ethernet)
Thanks!
Noop, I am on T-Mobile, 100m+ on band 4 all the time
@cgigate which max2 model you have? which OS are you using? and which modern/baseband version?
My provider use band 3 but I don't think it is the issue. Because I get similar result with WiFi which is very strange. Also, do you see LTE+ or something different than LTE as connection icon?
@cgigate I think you must be sitting next to antenna all the time. I managed to get 80mbit when base station antenna was 50m away from me and I was very close. My provider use B3 and B7 which should be supported with any version of max2....
yurtesen said:
@cgigate which max2 model you have? which OS are you using? and which modern/baseband version?
My provider use band 3 but I don't think it is the issue. Because I get similar result with WiFi which is very strange. Also, do you see LTE+ or something different than LTE as connection icon?
@cgigate I think you must be sitting next to antenna all the time. I managed to get 80mbit when base station antenna was 50m away from me and I was very close. My provider use B3 and B7 which should be supported with any version of max2....
Click to expand...
Click to collapse
I own two MAX 2 (x820 and X829), both are same on stock 23s.
yes, my house near a good t-mobile towers for sure ...especially on band 4, sometime on band 2 or 12 , those bands are much slower...
@cgigate can you check my previous post? I had some questions for you there how do you see which brand you are on?
yurtesen said:
@cgigate can you check my previous post? I had some questions for you there how do you see which brand you are on?
Click to expand...
Click to collapse
You cannot see the band actually. You know the band you are on by knowing what your network provider uses.
yurtesen said:
@cgigate can you check my previous post? I had some questions for you there how do you see which brand you are on?
Click to expand...
Click to collapse
Use LTE discovery APP and turns on "Live" mode you will see the real-time which band you are on, see my screen capture you will know I am on LTE band 2
leptdre said:
You cannot see the band actually. You know the band you are on by knowing what your network provider uses.
Click to expand...
Click to collapse
False, see above
cgigate said:
Use LTE discovery APP and turns on "Live" mode you will see the real-time which band you are on, see my screen capture you will know I am on LTE band 2
False, see above
Click to expand...
Click to collapse
Do you need root ???
I use the same app on lineageos and it needs root.
But I am not sure still why my max2 is performing so bad.
Anyway, I downgraded my service connection speed to 21mbit now and have no more speed problems I think there is some sort of problem in max2 which is causing this.
leptdre said:
Do you need root ???
Click to expand...
Click to collapse
No root needed for "LTE discovery" app to get band info
yurtesen said:
I use the same app on lineageos and it needs root.
But I am not sure still why my max2 is performing so bad.
Anyway, I downgraded my service connection speed to 21mbit now and have no more speed problems I think there is some sort of problem in max2 which is causing this.
Click to expand...
Click to collapse
No, "LTE discovery" app dose not need "root" to get RF band info on lineageos
although, there is option to choose "root" from the app to get more info. but if you only want to know what band you are on , no "root" needed
@cgigate if I dont select the root option. It only shows me the signal strength. I don't quite understand how everything works for you and nothing works for me lol.
See the screenshots with it selected and not selected. I also attached one from phone info...you tell me if anything is different? I really dont understand how this can happen....
@cgigate can you send screenshot from your phone info? or what os are you using and what is your baseband modem firmware version?
I don't believe there will be modem(if any, actually I don't if it's ever needed as snapdragon do supply modem's function), that would only support 4G LTE mode
just think, if this 4G LTE only modem would be ever needed?
what kind of equipment, as mostly phone and tablet, will need a 4G LTE only modem?
the answer is clear : NO
no one will ever want a tablet or whatever(notebook maybe?) can only connect to 4G LTE but no 2G/3G mode
if there is no 4G LTE only modem, then what would be the situation of our mi pad4 LTE and mi pad 4 plus?
IT'S CLEAR!
2G AND 3G MODE HAS BEEN BLOCKED BY SOFTWARE BUT NOT AT HARDWARE LEVEL!!!!!!
so if anyone do find the way to unblock it, we can use it to connect via 3G/2G mode!
unreallove said:
I don't believe there will be modem(if any, actually I don't if it's ever needed as snapdragon do supply modem's function), that would only support 4G LTE mode
just think, if this 4G LTE only modem would be ever needed?
what kind of equipment, as mostly phone and tablet, will need a 4G LTE only modem?
the answer is clear : NO
no one will ever want a tablet or whatever(notebook maybe?) can only connect to 4G LTE but no 2G/3G mode
if there is no 4G LTE only modem, then what would be the situation of our mi pad4 LTE and mi pad 4 plus?
IT'S CLEAR!
2G AND 3G MODE HAS BEEN BLOCKED BY SOFTWARE BUT NOT AT HARDWARE LEVEL!!!!!!
so if anyone do find the way to unblock it, we can use it to connect via 3G/2G mode!
Click to expand...
Click to collapse
Looks like the hardware does support GSM/EDGE
https://www.qualcomm.com/products/snapdragon-modems-4g-lte-x12
https://en.wikichip.org/wiki/qualcomm/snapdragon_600/660#Connectivity
sara.ramli said:
Looks like the hardware does support GSM/EDGE
https://www.qualcomm.com/products/snapdragon-modems-4g-lte-x12
https://en.wikichip.org/wiki/qualcomm/snapdragon_600/660#Connectivity
Click to expand...
Click to collapse
actually now I am already thinking about trying to flash the modem file from another sdm660 phone or tablet
mostly from xiaomi, that will be phones
at first, I tried to edit nv items
but then, failed, I found those steps found online is only to change channels for 3G or 2G
it was only to add more channels to 3G maybe
then I tried to find the nv items to enable 3G/2G
but.......there should be at least 6xxxx to 7xxxx items
and they are complicated, and divided into very minor details of radio frequency
I do think that anyone outside of Qualcomm cannot be sure which item do what
finally come to this modem thing, I do think I've got the way finally!
but seconds ago...... I found out again even if the modem changed and mi Pad 4 do boot successfully
the nv items still need to be edited!
so, any help is welcomed here
as I do think now, even if I can change modem file successful
there still should be numerous nv items need to be changed