I'm running Stock Rooted ZV8, mostly I'm happy with it. I do however encounter some signal quality issues from time to time. So I have two questions for which I have been unable to locate an answer.
1. Are there any determinable differences between the modems? My biggest issue is the phone dropping to 3g when I'm in an area that Sprint reports should be a solid 4g area.
2. Is the the latest version backwards compatible? While I'm interested in the latest modem I'm quite happy with my current stock rom and setup and I really don't want to switch over.
Thanks in advance.
They're both lollipop. So you can flash both. I have flashable modem files in one of the stock rom threads.
I could see little difference, if any, between the two.
Related
Hi! This is my device
Device: Samsung Galaxy S2 gti9100
ROM: CM10.1 nightly 20130610
Android Version: 4.2.2
So I was having some trouble with my 3G, I was only getting 2G. So I decidded to flash a new baseband, which I found on here: http://d-h.st/users/ApriliaM3/?fld_id=7487#files
With this, I successfully got my 3G on, also 2G. But the problem now is that I can't make any calls!
No sure if its a baseband problem since I have 2G and 3G from carrier. Can anyone help me?
Thanks!
You haven't told us which modem you flashed (Tho it doesn't matter that much given you're going to have to change it anyway).
OK. You need to be methodical to fix this. So...
1) Start with stock roms released by your carrier. Find out which modems were bundled with those stock roms, and flash/test those first. Rationale behind this is you'd hope your carrier would have fully tested their stock roms before they release them including the modem, to ensure that the modem works with their network most of the time & in most places.
Still having problems ?
2) Stock roms released by other carriers in your country. Find out which modems were bundled with those stock roms. Flash/test those.
Still having problems ?
3) Flash/test every other modem bundled with every stock rom released by every carrier who sold the I9100 you can get your hands on (there are dozens).
And now that I think of it, if it were me in this situation & the problems persist after trying 1 (the modems bundled with your carrier's stock roms), I'd probably do a clean install of the rom I was using including a wipe/nuke in case there's something funky rom-side causing it.
If you're still having problems having done all that, you might want to do a clean install of stock & start with modems bundled with stock roms released by your carrier to rule in/out a CM problem.
And if it's still happening with a clean install of stock & using the modems bundled with your carrier's roms (which every 'ordinary' user who uses the SGS2 with your carrier & is running stock and doesn't mod their phone uses & has no connectivity issues most likely), it's either a carrier-side issue or a hardware problem.
What happend was you flashed modem/ril. Dont flash ril on custom rom. Bye bye imei. Have a look. Settings,about device, , status look for imei see of its blank.
Hello everyone
I have a SGS II GT-i9100T which is a gift from my brother from New Zealand.
I´m running CM 10.1.3 and sometimes my signal drops, "Emergency calls only"! I´ve tested the Simcard on other phone and it´s fine.Could anyone suggest me a modem to flash to my phone?
I´m living in Germany and using O2-de.
Thank you.
Here is some info in case you need them:
i am not very sure whether geographical location affects modem or not, but there was a country based thread for India. They have some popular modems listed out here -
http://forum.xda-developers.com/galaxy-s2/general/i9100-modem-reviews-india-user-based-t2184193
You can get flashable modems here - http://veyka.co.uk/sgs2/radios/
have fun testing them.
Forget the fact you're in Germany; stick to modems bundled with stock roms released by carriers who sold the I9100T. Go to Samfirmware, use the pulldown boxes to make a list of all the stock roms released by carriers which sold the I9100T (there aren't many). If you click through each stock rom in turn it will list the modem - make a list of all the modems. Then search for CWM flashable versions of these modems on here (easily found with a search), download them, and start testing them out.
Only if you get to the point where you've tried all of these modems & they don't improve your connectivity should you consider flashing regular I9100 modems (I know this because I have an I9100T).
You might also be suffering from a long standing problem with CM roms where connectivity just goes away for no particular reason at all. The way you'd test if this is the case or not is to do a clean install of a stock rom released by a carrier which sold the I9100T (doesn't matter which, but don't flash 4.0.4).
I missed on seeing that the phone involved here is i9100T. My Bad.
Apologies for feeding you wrong info here.
sorry for "ruining" this thread, but:
1. How to know what the best modem is for you (I live in the netherlands).
2. Can you flash a modem on any android version? (I'm on carbon 4.4.2 rom).
3. Is it safe like rom flashing?
^^^
1) The way I always tell people to approach this is similar to what I said to the OP; go to Samfirmware, find all the stock roms released by your carrier, click through on each one & make a note of the modem. Search here/Google for CWM flashable versions of each modem, and test them out. If you find you go through all the ones bundled with stock roms released by your carrier & your connectivity is still bad, do the same with modems bundled with stock roms released by other carriers in your country. If your connectivity is still bad after that, flash any modem you can get your hands on.
But for most people, modems bundled with stock roms released by their carrier should work best; rationale being you'd hope the carrier would have fully tested them to ensure they work for most people most of the time on their network.
If your connectivity is currently fine, there's no need to go messing around with modems. Chances are you'll make it bad if you do I.E if it ain't broke don't fix it. Only mess around with modems if you have problems with connectivity.
2) Yes, modems are independent of Android version.Same risk as flashing anything else (I.E very small risk of the flash going bad with any given flash).
3) Risk should be minimal; I've never heard of anyone borking a phone with a modem misflash, but anything is possible I guess.
Hi,
I have some problems with modems and signal strength... I have search other threads but did not find anything really useful.
I bought an i777 when I was living in America for work, but now I'm back to Italy and I see that I always have bad signal (I've checked also with Better Battery Stats). I've tried different modems, but didn't see remarkable differences...
When other people asked for this stuff, the answer was almost always "install and try". Do you know if there is another way to test modems?
Since the i777 is from an American carrier, is it possible to port an i9100 modem?
Thank you!
Kefka88 said:
Hi,
...I've tried different modems, but didn't see remarkable differences...
Since the i777 is from an American carrier, is it possible to port an i9100 modem?
Click to expand...
Click to collapse
Short answer is no, i9100 modems will not work on an i777. While the devices are alike in many ways, modems from the i9100 aren't compatible (or portable) to the US variant. You can flash an i9100 modem and the phone will boot up fine, but you'll run into trouble with not being able to hear the caller/them hearing you. Normally this workaround would be to flash an i777 kernel with MicSwap capabilities, but that will have no affect on a modem as the baseband's are different.
Perhaps a longer answer than you needed. Sorry, I'm not aware of a real solution for you other than purchasing a different device for your region.
SteveMurphy said:
Short answer is no, i9100 modems will not work on an i777. While the devices are alike in many ways, modems from the i9100 aren't compatible (or portable) to the US variant. You can flash an i9100 modem and the phone will boot up fine, but you'll run into trouble with not being able to hear the caller/them hearing you. Normally this workaround would be to flash an i777 kernel with MicSwap capabilities, but that will have no affect on a modem as the baseband's are different.
Perhaps a longer answer than you needed. Sorry, I'm not aware of a real solution for you other than purchasing a different device for your region.
Click to expand...
Click to collapse
Thank you for the answer SteveMurhpy! I can't change phone right now, so I'll have to try the other modems... do you know if there is a faster/better method to test them than to install and try? And how much does the version of the OS interact with the modem? I am on Slimsaber right now... Thanks!
Kefka88 said:
Thank you for the answer SteveMurhpy! I can't change phone right now, so I'll have to try the other modems... do you know if there is a faster/better method to test them than to install and try? And how much does the version of the OS interact with the modem? I am on Slimsaber right now... Thanks!
Click to expand...
Click to collapse
I don't think the OS has anything to do with the signal strength, if it did it would likely be on older firmware such as GB, ICS and not the KK version you're currently running. As for the modem, unfortunately there's no way to test signal strength prior to flashing, so you're just going to have to keep trying them until you find one that works in your country.
One might suggest alternate APN settings, but that has more to do with functionality and speed rather than signal strength.
Sorry, as far as I'm aware there's no easy fix for you.
SteveMurphy said:
I don't think the OS has anything to do with the signal strength, if it did it would likely be on older firmware such as GB, ICS and not the KK version you're currently running. As for the modem, unfortunately there's no way to test signal strength prior to flashing, so you're just going to have to keep trying them until you find one that works in your country.
One might suggest alternate APN settings, but that has more to do with functionality and speed rather than signal strength.
Sorry, as far as I'm aware there's no easy fix for you.
Click to expand...
Click to collapse
I had some doubts about the compatibility between modem and OS because when I was back on SlimBean and I flashed a modem from GB the System UI kept crashing... but maybe there other types of problems, I didn't investigate that much.
Ok then, I'll keep trying... maybe I'll find the right modem for my country!
Thank you very much again SteveMurphy!
First of all this is my first post. Hello to everyone. I have been searching/reading thru these forums. Great source of info.
Phone info:
Currently S-OFF, unlocked, lateset AT&T 4.4.2 firmware, viperone 6.2.1, twrp
I have a pretty good comprehension of how to install or revert pretty much anything that can be done to this phone and have done so with great success. What I don't understand is the relationship between the firmware base of an RUU and the build of any given ROM. How is it that a custom Rom based off let's say x.xx.401.x work with x.xx.502.x main version? The devs say to update to the most current available firmware. Does that mean I have to flash a firmware base that matches what the Rom base for optimal performance? Because I originally thought that was the case and when I did my phone developed syncing issues particularly with the stock mail and weather apps. They would only sync over WiFi. Everything else about the phone worked as normal. Believing there was a problem with the Rom I flashed a few different popular roms on here. Always returning to full AT&T stock first. I later fully converted to GPE and to my surprise everything worked as normal. So I then converted to stock developer edition by way of zip flash and RUU exe. (By the way, when I say stock I mean s-off & unlocked but otherwise factory.) Received all the ota's. Main version would show as x.xx.1540.x. supposedly this would make my phone a dev edition with AT&T as the provider. And yet the syncing problems returned. So once again I returned back to factory AT&T 4.4.2 and all returned to normal. I then decided to try and use a Rom based off 4.4.2 and not one from 4.4.3; expecting the syncing issues to return only this time they didn't. So now I am really confused.
My questions are:
If coming from 4.4.2 factory firmware, is it best to run a Rom from the same base or am I doing something wrong and I should be able to use a Rom from a newer base on an older firmware?
If the developer edition and GPE can be carried by AT&T then why was I having syncing issues with the developer edition and not GPE?
I thought by being s-off I should be able to flash any RUU from any carrier without problems, just that I would be limited to the network capabilities of the actual service provider.
Everything I know about this stuff I learned from this forum. But I think I missed something.
My AT&T M7 always works best on the stock software.
The only thing I could figure is that AT&T have refined the software and radio so well that all the other versions pale in comparison.
I noticed the Developers Edition always had a horrible Bluetooth and WiFi radio. Signal strength was always weak compared to the stock AT&T software.
To answer your questions
Flash any version Roms you want on the latest AT&T firmware. And you'll have the best your phone can be.
clsA said:
My AT&T M7 always works best on the stock software.
The only thing I could figure is that AT&T have refined the software and radio so well that all the other versions pale in comparison.
I noticed the Developers Edition always had a horrible Bluetooth and WiFi radio. Signal strength was always weak compared to the stock AT&T software.
To answer your questions
Flash any version Roms you want on the latest AT&T firmware. And you'll have the best your phone can be.
Click to expand...
Click to collapse
I get so mixed up with all the terms being used interchangeably. So to clarify, as long as I am using the latest firmware from AT&T (currently 5.12.502.2 kk4.4.2), I can flash any custom ROM base. Whether it is based on 4.4.2 or higher. Correct?
I still want to know why I experienced the sync problems while running the factory x.xx.1540.x dev edition but not with the GPE. I never tried the factory x.xx.401.x WWE firmware either. However, I just got an sim unlock code from AT&T earlier today. I'm gonna try that maybe tomorrow and see if it makes a difference altho I don't believe it should. And I'm not gonna switch to a different provider.
Honestly, I was happy with my phone before I got wrapped up in all of this. I just decided to tinker with the phone and the mod bug has bitten.
ANGRY_robert said:
I get so mixed up with all the terms being used interchangeably. So to clarify, as long as I am using the latest firmware from AT&T (currently 5.12.502.2 kk4.4.2), I can flash any custom ROM base. Whether it is based on 4.4.2 or higher. Correct?
I still want to know why I experienced the sync problems while running the factory x.xx.1540.x dev edition but not with the GPE. I never tried the factory x.xx.401.x WWE firmware either. However, I just got an sim unlock code from AT&T earlier today. I'm gonna try that maybe tomorrow and see if it makes a difference altho I don't believe it should. And I'm not gonna switch to a different provider.
Honestly, I was happy with my phone before I got wrapped up in all of this. I just decided to tinker with the phone and the mod bug has bitten.
Click to expand...
Click to collapse
I think I figured this out. I continued to flash different ROMs and firmwares with the same results as I posted in the OP. Then earlier tonight I decided to try to convert to developer edition again (x.xx.1540.x) and flashed an ruu.zip, went thru the setup process, and as before the same issues returned. Then I had an idea; lets try something I haven't done yet. I pulled the SD card and factory reset the phone. After I completed the basic setup process I inserted the SD card and let the phone do its thing. The phone now works as it should (same as it does with the AT&T xx.502.x firmware installed).
Just figured I would pass this along.
Cheers
I give up
I thought I had this figured out. Last night after to converting to dev edition with all updates, everything seemed normal. I flashed the latest viperone rom as it is the rom I want. Turn the phone on this morning and the sync problems are present once again. I have searched thru a tom of pages on this sight alone. I cant find an answer. So its back to stock at&t.
I solved the problem. Incorrect settings in 4636 menu.
Quick background: I'm a new LG G3 owner and I've been rooting and ROMing with three previous phones going back to the OG Droid but only by following the awesome work of developers. I'm currently on the 12b build which is what the phone came with and I've rooted and installed a custom recovery.
At some point I'll try a LP Rom but I'm not quite ready yet. I was wondering if I should go ahead and flash the 23c modem and kernel now while I'm still on KK. Would that cause an issue? If that would be an issue, when would I flash those in the upgrade process?
As a side note, does anyone have a recommendation as to which LP ROM is most stable? I like customization (which the LG UI doesn't have enough of), but I value full functioning and stability more.
Thanks in advance for any help and I apologize if this info is already posted; I've been searching and reading for hours
You can't use the 23C kernel or modem on 12B.
ROMs usually include kernels so when you flash a ROM, it'll include whatever kernel's needed. I could be wrong but I think the stock LG Lollipop ROMs that have been released include the modem, too.
If they don't, flash the modem after you flash a 23C ROM.
As far as what Lollipop ROM is most stable, that's personal preference. I use my own modified Odex'd.
Sent from my VK810 4G
Thanks for the help.