[Q] Can I flash SGH-i337 modem on i9505 - Galaxy S 4 General

I am owning a i9505. But the signal is very bad when I am in the school building. Since my current carrier is H2O Wireless, which is using AT&T 's signal, I am wondering if I can flash SGH-i337(att version galaxy s4) modem to make the signal better.

Mxyzptlk13 said:
I am owning a i9505. But the signal is very bad when I am in the school building. Since my current carrier is H2O Wireless, which is using AT&T 's signal, I am wondering if I can flash SGH-i337(att version galaxy s4) modem to make the signal better.
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Click to collapse
No, you will brick your phone. The problem here is not the modem... Its the concrete the structure is made of and lack of any repeater to bring cell signal in.
this is also the wrong forum, please read XDA rules and see the Q&A thread.

Related

on T mobile? help please

can someone please help me as i dont know if i should buy this cellphone.
is $300 a good price?
would it work on t mobile 3g/4g?
can it please be a samsung stock rom?
with touchwiz? i come from a lg g2x and i really like the looking of touchwiz.
i wonder if should buy this phone?
second whats the best modem/radio for t mobile?
one that works with a stock samsung rom with touchwiz.
does this phone has ice cream sandwicch by samsung?
it has touchwiz?
sorrry im a newbie
i really want to use this phone on t mobile with 3g/4g and a samsung ics with touchwiz.
i hope i can have the answer of my questions here. thank you
Use the 989 its the same phone made for tmo
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Illnevertell said:
Use the 989 its the same phone made for tmo
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
lol they are selling me this one. unlocked the skyrocket soo i guess
shadowpr2007 said:
can someone please help me as i dont know if i should buy this cellphone.
is $300 a good price?
would it work on t mobile 3g/4g?
can it please be a samsung stock rom?
with touchwiz? i come from a lg g2x and i really like the looking of touchwiz.
i wonder if should buy this phone?
second whats the best modem/radio for t mobile?
one that works with a stock samsung rom with touchwiz.
does this phone has ice cream sandwicch by samsung?
it has touchwiz?
sorrry im a newbie
i really want to use this phone on t mobile with 3g/4g and a samsung ics with touchwiz.
i hope i can have the answer of my questions here. thank you
Click to expand...
Click to collapse
I'm running the skyrocket on tmobile's faux-g network. It took about a month and a half to settle on the config, as noted in my sig. Hope this helps a bit.
dca1200 said:
I'm running the skyrocket on tmobile's faux-g network. It took about a month and a half to settle on the config, as noted in my sig. Hope this helps a bit.
Click to expand...
Click to collapse
ergh i hope this works, i been trying so many things, so many radios.. learned we are cross compatible with the I727 (naturally), I727R, T989, T989D, and even the T879 radios >.> .. yet the only time I ever got ANY data (even EDGE which is all we get here) is on a Gingerbread ROM.. ugh. Glad I haven't canceled AT&T yet..
edit: big fat nope for data still *sigh*
edit2: finally got EDGE.
zefie said:
ergh i hope this works, i been trying so many things, so many radios.. learned we are cross compatible with the I727 (naturally), I727R, T989, T989D, and even the T879 radios >.> .. yet the only time I ever got ANY data (even EDGE which is all we get here) is on a Gingerbread ROM.. ugh. Glad I haven't canceled AT&T yet..
edit: big fat nope for data still *sigh*
edit2: finally got EDGE.
Click to expand...
Click to collapse
Maybe I'll try the radio in your sig instead
My skyrocket is running on T-Mobile 4g!!!!
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Here you go buddy and have fun! Use the VK1 radio...
http://forum.xda-developers.com/showthread.php?t=1507825
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
dca1200 said:
Maybe I'll try the radio in your sig instead
Click to expand...
Click to collapse
I chose this radio because T989 users were saying they got better signal on this than even on Blaze radios. Or something like that. I'd link it but I spent like 7 hours fighting with it, way past my normal bed time, so I hardly remember anything. Here is a screenshot of my phone running the radio to prove it isn't a brick-maker. I also do not know if this supports 3G/4G, because as you can see my tower is EDGE :/
zefie said:
I chose this radio because T989 users were saying they got better signal on this than even on Blaze radios. Or something like that. I'd link it but I spent like 7 hours fighting with it, way past my normal bed time, so I hardly remember anything. Here is a screenshot of my phone running the radio to prove it isn't a brick-maker. I also do not know if this supports 3G/4G, because as you can see my tower is EDGE :/
Click to expand...
Click to collapse
I'm gonna test it here in Vegas as soon it's done charging and nandroid backup. Hopefully, you get 3g/faux-g soon.
Yep can confirm that this radio works with faux-g here in Vegas. It's a little slow right now in the part of town where I'm living but workable. To the OP, radios are important for the type of ROM you want to be using. For example, a GB ROM depends on a GB radio and the same goes for ICS/JB ROMS.
dca1200 said:
I'm gonna test it here in Vegas as soon it's done charging and nandroid backup. Hopefully, you get 3g/faux-g soon.
Click to expand...
Click to collapse
I'd be content with reliable 2G. According to mapping apps there is a whole 1 tower here, 2G, and barely usable. Many times it will show 1 bar and still say 'Emergency Calls Only' >.>
I flashed a T989 ROM to enable Wifi Calling, but I need a new SIM card from T-Mobile (a 'GBA SIM'). It took a while with a bunch of phone tag across T-Mo departments, but I think I finally have a 'GBA SIM' coming at the cost of $0.99. Will report.
zefie said:
I'd be content with reliable 2G. According to mapping apps there is a whole 1 tower here, 2G, and barely usable. Many times it will show 1 bar and still say 'Emergency Calls Only' >.>
I flashed a T989 ROM to enable Wifi Calling, but I need a new SIM card from T-Mobile (a 'GBA SIM'). It took a while with a bunch of phone tag across T-Mo departments, but I think I finally have a 'GBA SIM' coming at the cost of $0.99. Will report.
Click to expand...
Click to collapse
Zefie im using the same rom and radio and kernel as you are and i cannot get to connect to hspa+ sincei only get 1mb of speed or less.
and internet its always slow
Perhaps I may help a bit. Is it showing 4g in the status bar? Also, are you in a 4g area?
i727 is watching you.
shadowpr2007 said:
Zefie im using the same rom and radio and kernel as you are and i cannot get to connect to hspa+ sincei only get 1mb of speed or less.
and internet its always slow
Click to expand...
Click to collapse
dca1200 said:
Perhaps I may help a bit. Is it showing 4g in the status bar? Also, are you in a 4g area?
i727 is watching you.
Click to expand...
Click to collapse
My phone reports that the mobile network type is "EDGE:2". I've assumed that this means I am not in a 3G area. The T-Mo coverage map shows the majority of my area as 2G. There is one small light green spot (assumingly 3g?) over my house, but I think this is just an error on the map. Therefore I am unable to properly test for 3G/4G connectivity.
I've also asked T-Mo if there was any plans to upgrade our tower to 3G, and unlike AT&T who would quickly counter with "but we have 3G in your area!", T-Mo sent me to some activist page to start a local rally to convince local officials to upgrade coverage. I guess this is their way of admitting it is, in fact, a 2g tower.
I've also changed my radio back to T989. I'm not sure if it was a radio issue or what but it seems after a few hours the phone would lose service completely. I'm still testing stuff.
zefie said:
I've also changed my radio back to T989. I'm not sure if it was a radio issue or what but it seems after a few hours the phone would lose service completely. I'm still testing stuff.
Click to expand...
Click to collapse
What is the average signal strength that you usually get? Also , if I read correctly, you are now using the stock t989 radio on the skyrocket? Which would mean GB?
i727 is watching you.
dca1200 said:
What is the average signal strength that you usually get? Also , if I read correctly, you are now using the stock t989 radio on the skyrocket? Which would mean GB?
i727 is watching you.
Click to expand...
Click to collapse
this radio (UVLH1, 4.0.4 ICS latest T989 radio) is also doing the same thing as the note radio. After a while (3-5 hours) the status bar will show service (2-3 bars, even fluctuate) but the system is "Searching" and calls and txts are missed. Need a stable radio...
edit 2: I guess technically I could just ust the original AT&T radio since I only get 2G here anyway, and T-Mobile is re-farming so 3G will eventually work on 1900mhz., the 1700/2100 is going to LTE like it should, thus our skyrockets on AT&T radio should technically be able to get T-Mobile 4G LTE when its available
edit 3: rogers (I727TR) radio probably better than AT&T for the sake of rat unlocked
edit 4: removed edit 1, just gonna use I727R UCLD2
OK. Sorry that the radios didn't really work out. I do encounter some network disconnects here but not a total dealbreaker. I guess we'll have to wait for T-Mobile. On a sidenote, I am finding I have better coverage with this radio.
i727 is watching you.
dca1200 said:
OK. Sorry that the radios didn't really work out. I do encounter some network disconnects here but not a total dealbreaker. I guess we'll have to wait for T-Mobile. On a sidenote, I am finding I have better coverage with this radio.
i727 is watching you.
Click to expand...
Click to collapse
I do like T-Mobile but I will watch from StraightTalk (AT&T Sim) and try again when they grow some more here. I need mobile data to work. I wouldn't mind 30kB/s but I only accomplished that once. Heck I'd even take 5kB/s if it didn't take over 2 minutes to establish one connection. I can't even use MMS most the time because it seems to require 4+ (-90) bars of service before EDGE will even establish a connection.
Edit: Got my 'GBA SIM' today for Wifi Calling. Works great on this ROM combo. I just wish I had mobile internet. I may do some tests as I am secretly hoping this GBA SIM has 3G/4G and maybe my old SIM was a 2G sim.
For archival reference in case I go back to AT&T ROMs, and my sig changes, Wifi calling for T-Mobile works on our Skyrockets using Faux123 ICS T989 Kernel for I727 MOD v001 and SGH-T989 UVLE1 Infamous Resurrection ROM
Zefie thank you for moding faux kernel as i use the rom on your signature and the kernel and Telus modded radio for t898d nd im getting awssome hspa+ speeds today i gotted 10mb download and 2mb up.
shadowpr2007 said:
can someone please help me as i dont know if i should buy this cellphone.
is $300 a good price?
would it work on t mobile 3g/4g?
can it please be a samsung stock rom?
with touchwiz? i come from a lg g2x and i really like the looking of touchwiz.
i wonder if should buy this phone?
second whats the best modem/radio for t mobile?
one that works with a stock samsung rom with touchwiz.
does this phone has ice cream sandwicch by samsung?
it has touchwiz?
sorrry im a newbie
i really want to use this phone on t mobile with 3g/4g and a samsung ics with touchwiz.
i hope i can have the answer of my questions here. thank you
Click to expand...
Click to collapse
Buy a Samsung Galaxy Nexus from the Google Playstore for only 349.00. Its unlocked and works with both ATT and TMobile 4G.
That's what I did for my wife and using a Flashed Skyrocket on T-Moile 4G has been flaky at best.

[Q] Flashing T-Mobile radio onto at&t skyrocket

I have a rooted and unlocked at&t skyrocket on jellybean 4.1.2 with very slow speeds, so I tried flashing the radios UCMC1 and UXUMA7 through cwm and nothing has changed. After messing with the APN settings a little my data is no longer working. It shows the bars but I can't get a connection.
I flashed the radio UVLI1 in hopes that I would get lucky but that caused my bars to go away to be replaced by a slashed circle. I flashed back to UCMC1 which is showing the bars, but still no data connection. I have broken my back googling and searching forums on this matter but I can't seem to figure this out. Any help please?
http://forum.xda-developers.com/showthread.php?t=2349914
Don't double post
I think UCMC1 and UXUMA7 are ATT and Rogers radios respectively. UVLI1 is the T-Mobile SGS2 ICS radio, which may not work on your JellyBean rom.
Try UVMC6, which is the radio for T-Mobile's SGS2 Jelly Bean update. You can find it here:
http://forum.xda-developers.com/showthread.php?t=1895400
Results can never be guaranteed, but this is the radio I use, and it has worked fine on every single rom I've tried, Touchwiz or AOSP, even in areas w/o the 1900Mhz refarm.
Can I flash the radio change w/out having my phone rooted?
Rissa82 said:
Can I flash the radio change w/out having my phone rooted?
Click to expand...
Click to collapse
Your phone must have a custom recovery to flash radio files...
It has twrp... that counts right? It doesn't need to be rooted, does it? I'm a computer nerd... phones aren't my thing. Give a girl a break, lol.
Rissa82 said:
It has twrp... that counts right? It doesn't need to be rooted, does it? I'm a computer nerd... phones aren't my thing. Give a girl a break, lol.
Click to expand...
Click to collapse
Yes ... TWRP or CWM are fine...
Rooting is something different, but for radio flash you have enough...
mahanddeem said:
Yes ... TWRP or CWM are fine...
Rooting is something different, but for radio flash you have enough...
Click to expand...
Click to collapse
Would you mind telling me how I flash it or point me to a thread that will walk me through it quickly? Please & thank you!
---------- Post added at 10:25 PM ---------- Previous post was at 10:15 PM ----------
Nevermind! I think I figured it out!
If I have a AT&T skyrocket and have a T-Mobile sim, should I use this radio? Or just stick with the UX, I am currently running?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
DSDONE said:
If I have a AT&T skyrocket and have a T-Mobile sim, should I use this radio? Or just stick with the UX, I am currently running?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
It depends on what you observe using either of these..
Try them one by another and see which one is better (UCMC1 vs UX radio) in signal and data speeds ... Personally I couldn't find any difference in my location ... Both gave me the exact same signal and data speeds (TM LTE).
mahanddeem said:
It depends on what you observe using either of these..
Try them one by another and see which one is better (UCMC1 vs UX radio) in signal and data speeds ... Personally I couldn't find any difference in my location ... Both gave me the exact same signal and data speeds (TM LTE).
Click to expand...
Click to collapse
The UX gave me faster data speeds. Call clarity is about the same. I see 4G more than with the UC radio... I was wondering about the T-Mobile radio
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
T-Mobile radios would give you the ability to connect to T-Mobile 3G using AWS bands 1700/2100 Mhz Band4...And no LTE (or 4G) of course since the Hercules and Blaze (or the note one from TM) devices have no LTE radio chip...
If you live in an area in which T-Mobile deployed their new LTE(and most likely they already refarmed the PCS 1900 band), use UCMC1 or the UXMA7 radio,whichever you find better...Setting the apn to fast.t-mobile.com is essential for sure to get the service...
If you live in an area that T-Mobile is still at their 3G service (AWS bands for HSPA+) use the newest blaze JB radio...
Edit : when you say faster data speeds UX vs UC , any speed vs speed measurement you can share ? probably I didn't give each radio enough testing and jumped to conclude that they have same data speeds !
:good:
mahanddeem said:
It depends on what you observe using either of these..
Try them one by another and see which one is better (UCMC1 vs UX radio) in signal and data speeds ... Personally I couldn't find any difference in my location ... Both gave me the exact same signal and data speeds (TM LTE).
Click to expand...
Click to collapse

SGH-T727 has no high speed data!? Help please?

Hello. This may be a redundent problem and question thats been asked many times im sure. My in advance apoligies for I am new to this whole rooting and reprogramming with modified os andriod systems. I have a problem and if anyone can help or guide me in the proper directions, I would so greatly appreciate it. Let me first share what I have and what my issue is. Then any info you mau have I would greatly appreciate it. Thanks.
I have a att version samsung galaxy s2 Sgh-t727 skyrocket. I have factory unlocked it to use with my current local carrier Cincinnati Bell. It works with cin bell just fine in making calls. However, at best the internet is only E or G. I do have all apn settings correct. I think the problem is in the radio frequency there is a difference between the 2 service providers on thier technology way of connecting to 3 and 4g. Cinbell uses umts, wcdma, hspa and hsdpa with a bandwith of 1700 and 2100 mghz frequency connections. This att uses lte I believe. So since theres no lte service in my area offered, I believe the phone reverts to Edge gsm at best. Cincinnati Bell uses the same technology as T-Mobile as ive been told and they share the same towers in this region of ohio Kentucky and indiana. So with that said, is it possible this particular phone has all the proper connections and bandwiths but is locked to the original provider of the phone....being att in this case? And if it dont have all the proper frequency and bandwiths, then how do I flash it with T-Mobile radio signals and network technology so it can run using 3 and 4g speeds? Any help I would greatly appreciate. Thanks so much. Everyone have a great weekend.
Sent from my SGH-T999 using xda app-developers app
start here
|READ THIS B4 POSTING | THE MOST Common Questions Answered HERE |
I am running the stock updated jellybean 4.1 version. Hope that info helps. Thanks again.
Sent from my SGH-T999 using xda app-developers app
lwaldenjr said:
I am running the stock updated jellybean 4.1 version. Hope that info helps. Thanks again.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
I'd try some T-Mobile radios. See vincom's stickies.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Search for the following radios and try them :
I757MUGMC5
UVMC6
UVMB1
Try one after the other... Flash in cwm or twrp recoveries.Wipe cache after each radio flash and see what radio can give you the best results..
Wait on each radio for some time (let's say 15min) after reboot to settle down...
Double check your APN settings..
Your issue is exactly like somebody wants to use skyrocket on T-Mobile.. There's is big thread discussing that matter in the general section...
Good luck..
PS:Sometimes using a T-Mobile T989 rom probably would give you higher rates of success, especially your issue is the AWS bands in HSPA+
PS2:As a disclaimer , you're the only one who's responsible for any damages that may happen to your device , especially when dealing with radio and kernel , and as a side note , why Cincci Bell ? unless you have a strong reason (price,reception,etc..) I would think about T mobile itself , they are doing a good job in both expanding their LTE network as well as expanding their refamred 1900MHz spectrum which makes usage of stock AT&T radios possible , I use my Skyrocket on T mobile and get their LTE reception on UCMC1 without the hassle of trying radios and what not ...

4G LTE Phone, yet not that good signal. Help me!?

Hey guys,
So i just got my LG G2, rooted it, and threw CloudyG3 rom onto it. First, the LTE symbol isn't shown next to my signals at the top of my screen, and second, i always have low bars (at my house, in class). I'm using the D800 AT&T, but unlocked, so im using T-Mobile. Im using T-Mobile's 4G LTE APN, so i don't think that's the problem. I just kinda want reassurance that im using my phone's LTE by getting that symbol or something. I don't really know tbh, i just want my bars going to back up and assurance that im using my phone's full potential.
If there's something i can do that's safe, please comment.
-Castiel (Skype: isaac.jensen7)
Hello sir, (@^Castiel)
I can relate to your questions..
I have the D800 (AT&T variant) and flashed to the latest baseband/radio that I could find:
M8974A-AAAANAZm-1.0.190082
I have a T-Mobile S4 (M919) unlocked running on AT&T which seems to have *much* better signal than this device..
This device is *constantly* switching between 'H' (HSPA/HSPDA) and '4G' (LTE).
Whereas my M919 is pretty consistent, sticking with whatever the signal is.
I did find that I was having a massive wakelock which seemed to be related to FastDormancy which seemed to fix my batter drain..
HTH.
Below is the link from AT&T showing the latest version of the baseband:
http://www.att.com/esupport/article.jsp?sid=KB423381&cv=820
^Castiel said:
Hey guys,
So i just got my LG G2, rooted it, and threw CloudyG3 rom onto it. First, the LTE symbol isn't shown next to my signals at the top of my screen, and second, i always have low bars (at my house, in class). I'm using the D800 AT&T, but unlocked, so im using T-Mobile. Im using T-Mobile's 4G LTE APN, so i don't think that's the problem. I just kinda want reassurance that im using my phone's LTE by getting that symbol or something. I don't really know tbh, i just want my bars going to back up and assurance that im using my phone's full potential.
If there's something i can do that's safe, please comment.
-Castiel (Skype: isaac.jensen7)
Click to expand...
Click to collapse
Cloudyg3 doesn't have lte icons, only 4g, h+, h, 3g, e. Nothing is wrong with your phone. T-Mobile knows it's not their phone so your signal is weaker and you actually have less access to some of the towers. Try the T-Mobile Rom and you'll see the difference as it has the correct rtl files to let you use the full spectrum.

Need to get a Verizon Galaxy S3 (d2vzw) on Cyanogenmod working in UK

I been trying to get a Verizon Galaxy S3 (d2vzw) working on Cyanogenmod in the UK. The best I've had was on CM10.2 (using CDMA/GSM patch) when I had a reasonable phone signal but no data signal from my carrier, however I always had WiFi available.
Currently the VZW Galaxy S3 is rooted on Android 4.1.2 with baseband I535VRBMF1 with CWM Recovery where I get a lowish phone signal and a data signal, carrier EE/Orange. For most daily use it's ok, however I need to change to something more useable with a better phone signal as I'm just scraping by.
Have any European members of XDA had better results with Cyanogenmod, if so would they please share the information or at least point me in the right direction.
Many thanks

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