Data switching from 3G, H, H+ all the time - AT&T Samsung Galaxy S II Skyrocket SGH-I727

I just recently flashed CM10.1 build 20130321 and i noticed that the data constantly switches from 3G to H to H+. I did run a speed test and it is averaging 3.5 to 4.5 meg download. Is this something normal or will this cause a battery drain switching back and forth all day? BTW i am on ATT if that makes any difference. I am so happy with this build because i was one of the people that was having an audio phone call issues where i could hear them and they couldn't hear me. This build has fixed it for me.
On a side note i would like to thank everyone that contributes to this website and software, you guys do a great job and always helpful
Adam

Check your APN setting, make sure ATT LTE(PTA) is selected.
Sent from my SAMSUNG-SGH-I727 using xda premium

Mine does this as well and always has on multiple phones and ROMs. It has something to do with the service in your area. There is no way I am getting H+ in my area, only 3G, but it still switches to H+ while transferring data.
Sent from my SGH-I727 using xda app-developers app

Related

ATT's network...

Has anyone had a problem today where your phone just cannot connect to ATT's 3G or HSPA network? For some reason, my phone is getting little-to-no signal, and if I do, it is only on GPRS... I CWM'd to my stable nandroid, but no dice, leading me to think that this problem is with the network.
What's XDA's thought on this? Possible dev issue?
Sent from my SGH-I897 using XDA App
Att network just sucks.....I get good service everywhere but the places im at the most....my house and my job....go figure
Sent from my SAMSUNG-SGH-I897 using XDA App
Their network is just pretty terrible right now. However, by summer we'll probably be singing a different tune about ATT's coverage when the iPhone user population will even out a bit. Also, I believe ATT threw down a few billion for network upgrades this year. It seems like they really took that Consumer Reports article to heart, so I actually see good things in the future.
i haven't had 3G in 24+ hours in NJ. stock, non-rooted.
Must be location specific; -51 dB and HSDPA in Dallas
It happens every now and then in las vegas usually right after a flash. I start to change modems and other stuff then realize "dammit I bet the network is screwed up" sure enough next day things are working again. Damn phone companys lol
Sent from my SuperDuper!Captivate | PHOENIX RISING VERSION 3.5 with KP1 Modem | FireBird Kernel 2
i haven't had 3G in 24+ hours in NJ. stock, non-rooted.
Click to expand...
Click to collapse
You're quite close to where I am, it's probably regional then, but my old crappy phones' 3G is working fine though...
Sent from my SGH-I897 using XDA App
funny thing metro pcs is working better than ATT in south florida. metro is known for bad bad reception
No problems with 3G at the places I frequent in the Tampa Bay area.
I've not had any problems with 3G connections this year.
Aus_Azn said:
You're quite close to where I am, it's probably regional then, but my old crappy phones' 3G is working fine though...
Sent from my SGH-I897 using XDA App
Click to expand...
Click to collapse
interesting.. i spent a few hours yesterday with my phone going in and out with GPRS and no network connection at all. i've had fairly consistent EDGE ever since. i normally see 5 bars of 3G at my current location (newark, NJ).
reboots and battery pulls seem to have no effect.
-99db & HSDPA here in Tampa Bay area.
Sent from my SGH-I897 using XDA App
No AT&T 3G here...but I use edge network, get mostly 3 to 5 bars mostly indoors or outdoors depending on location. At my work, it's pretty good signal and get around 150-180kbps speed but at home is slower which is around 100-125kbps or slower, probably. I usually use wifi at my home with my own internet.
Out of Davenport, IA and I have great HSDPA signal running Perception 10.1 with the included 2.6.32.9 Firebird Kernel. I have flashed a bunch of DGs ROMs and never had issues with connectivity (voice or data).
I also get that the sim card.has been removed and its pissing me off.... btw, im on phoenix 3.5 with a setiron 1.5.6
matt868686 said:
interesting.. i spent a few hours yesterday with my phone going in and out with GPRS and no network connection at all. i've had fairly consistent EDGE ever since. i normally see 5 bars of 3G at my current location (newark, NJ).
reboots and battery pulls seem to have no effect.
Click to expand...
Click to collapse
I have 3G again, but regardless of HSPA or UMTS, I am getting .06Mbps down and about .4Mbps up. I have absolutely no idea why. I'm in Bridgewater, NJ.
I am in much the same predicament as you, reboots and pulls don't help. I've gone a step further and flashed 5 different ROMs today, no luck.
Sent from my SAMSUNG-SGH-I897 using XDA App
actually my 3G just came back a few hours ago too. 2-4 Mbps down and about 0.3 Mbps up, which are normal 3G speeds for me. and i didn't do anything to my phone, 3G just magically reappeared after at least a full 24 hours of only EDGE. strange.
Aus_Azn said:
I have 3G again, but regardless of HSPA or UMTS, I am getting .06Mbps down and about .4Mbps up. I have absolutely no idea why. I'm in Bridgewater, NJ.
I am in much the same predicament as you, reboots and pulls don't help. I've gone a step further and flashed 5 different ROMs today, no luck.
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Kizzmiazz said:
It happens every now and then in las vegas usually right after a flash. I start to change modems and other stuff then realize "dammit I bet the network is screwed up" sure enough next day things are working again. Damn phone companys lol
Sent from my SuperDuper!Captivate | PHOENIX RISING VERSION 3.5 with KP1 Modem | FireBird Kernel 2
Click to expand...
Click to collapse
Las Vegas + ATT = terrible.
I just went on a 2 say trip there, took me 2 hours to download a 37kb attachment with full bars. I'd get 30 text messages at once an hour late, with full bars.
If I had to work on the strip I'd drop att in a heartbeat... that is totally unfunctional!!
I've been fine elsewhere... and maybe that's just a bad day /spot... but damn!
Sent from my GT-I9000 using XDA App
matt868686 said:
actually my 3G just came back a few hours ago too. 2-4 Mbps down and about 0.3 Mbps up, which are normal 3G speeds for me. and i didn't do anything to my phone, 3G just magically reappeared after at least a full 24 hours of only EDGE. strange.
Click to expand...
Click to collapse
My definition of normal is >3Mbps down, >1.5Mbps up... How is yours so different when you are so near? I get these speeds regardless if I'm on HSUPA or UMTS. I tend to use the latter to save battery.
The more I look, the more I think that ATT just capped my speeds 2 nights ago. This is crap. No modem change, nothing fixes it.
Sent from my Samsung Galaxy S using XDA App
We finally got 3G here and its expanding rapidly in this state which is a good thing. I would like to see new coverage plans after March 31st.
Sent from my SAMSUNG-SGH-I897 using XDA App

EP4P Radio Impressions

If you are willing to share your experiences with the new radios, post away!
I am primarily curious how the radios behave on 3G. For me its too early to tell, so I will post after some testing. So far they seem roughly the same as EP3HA radios although I did have to pull the SIM to get it to behave after flashing. I'm hoping it will be stable now.
I got the new Radios over at mydroidworld. There is a EP4P radio thread on rootzwiki but XDA seems to get a lot of traffic so I posted here. I'll post links if you would like me to.
Personally i think the signal strength is lower everywhere compared to the EE4 and EP1-3 radios. Never had ant data dropping on any radio so can't comment on that.
Sent from my SCH-I510 using XDA App
Work great for me!
I think they are a bit better from EE4. I have dropped signal too many times to count on all the previous radios, but I have been using this for 2-1/2 days and, so far, haven't dropped once. The signal seems overall better, I have 3 bars in the basement of my house when I normally would have 2 on the other radios. Texts work quick, and calls come in quick (I called myself from our house phone and texted myself from my iPod and other phone. Seems to be equal or better to EE4. At least for me.
strangely enough I get better battery life on cdma/lte then cdma only :-/
davwman said:
strangely enough I get better battery life on cdma/lte then cdma only :-/
Click to expand...
Click to collapse
Same here. Plus, I have more problems (Lose connection, etc.) on CDMA only than on CDMA/LTE.
davwman said:
strangely enough I get better battery life on cdma/lte then cdma only :-/
Click to expand...
Click to collapse
That's... Strange
Sent from my SCH-I510 using Tapatalk
I won't comment on signal strength or quality, but I will say that in the last 2 or 3 modems there have been some huge glaring bugs in how it picks up 3g signal while LTE is enabled... The bugs I had experienced in the last 2 or 3 modems are not there, so far. This means that I can get 3g data in places that I the last couple modems failed to get 3g if LTE was enabled. I could disable LTE and get 3g signal, but even that was buggy / glitchy at best. Using a much earlier modem I would get consistent 3g signal in those places.
quarky42 said:
I won't comment on signal strength or quality, but I will say that in the last 2 or 3 modems there have been some huge glaring bugs in how it picks up 3g signal while LTE is enabled... The bugs I had experienced in the last 2 or 3 modems are not there, so far. This means that I can get 3g data in places that I the last couple modems failed to get 3g if LTE was enabled. I could disable LTE and get 3g signal, but even that was buggy / glitchy at best. Using a much earlier modem I would get consistent 3g signal in those places.
Click to expand...
Click to collapse
Same
Sent from my SCH-I510 using Tapatalk
I am having problems with SMS on this build, I'm not sure if it is the radio's fault or not. I'm getting a lot of "failed" messages that will go out after a retry. Twice now, though, I've had to reboot the phone to get messages flowing again.
bluevolume said:
I am having problems with SMS on this build, I'm not sure if it is the radio's fault or not. I'm getting a lot of "failed" messages that will go out after a retry. Twice now, though, I've had to reboot the phone to get messages flowing again.
Click to expand...
Click to collapse
Same here
Sent from my SCH-I510 using XDA App
I STILL get the nasty audio pops on speakerphone, though it appears to be fixed on the earpiece and bluetooth modes.
The new radio made my 3G speeds surprisingly usable (was practically useless in my neighborhood with any other radio) but 4G still drops out quite often.
Mine was dropping data constantly at first like other roms then it just went away now it works like it should. Im clueless to why its working but I'm a happy boy now
NO BARS DROID CHARGE

[Q] Reception Problems

okay guys so I just switched over from the Galaxy S to the S2, Skyrocket LTE
I had full reception at my house with the Captivate....Now, with the skyrocket I still have full reception....but with a catch
I'll have full service...then all of the sudden it will drop to 1 bar and be unable to send any texts. (Message not sent error). Then, like 45 seconds later it will turn back up to 5 bars and ill get texts.
the time that its off and on seems to be consistently repeating and switching back and forth between 45 second intervals. Also, sometimes ill get all my texts together (9 unread) out of nowhere with time stamps from 5-12 minutes ago.
I'm running STOCK everything:
Android version 2.3.5
Baseband: I727UCKJ2
Kernel version: 2.6.35.11
I wanna root my phone but I wanna make suree there isnt a problem with it.
I think its also important to note that this problem is ONLY in my house and around my house. not anywhere else.
Any ideas on what could be causing this, or any solutions? anyone else have the same problem?
I'd recommend reporting your thread via the upper right link to have this moved, you got it posted in the wrong phone section. I'd try to take a stab at helping ya but honestly it would just be a guess...
Thread moved from AT&T Galaxy S II forums to the Skyrocket Q&A forum...
anyone have any idea?
Sent from my SAMSUNG-SGH-I727 using XDA App
There have been some problems reported on the LTE network, but the biggest problem was/is.. people not being able to make calls when the network mode was set to lte auto. Depending on where you are, you might want to check the coverage map for your location... and call your carrier.
Sent from my SGH-I727R using XDA App
shaggyskunk said:
There have been some problems reported on the LTE network, but the biggest problem was/is.. people not being able to make calls when the network mode was set to lte auto. Depending on where you are, you might want to check the coverage map for your location... and call your carrier.
Sent from my SGH-I727R using XDA App
Click to expand...
Click to collapse
Thank you, do you have any links regarding the problems reported? I'm in LA, I dont think we have LTE here yet. Also the problems seem to happen only at my house, not even like 1 block down. I know I had full coverage here with no problems on my Captivate. It's just this phone, reception drops to 1 bar, then 5 .... like every 10 seconds, keeps going up and down, I gotta time when to send my texts so they go through lol.
I want to say lte is in testing for la. That could definitely cause issues if they are messing with the towers. The same thing happened to me while we were in Vegas...a few days later everything worked ...including LTE which Vegas previously did not have. Its also worth checking to make sure ATT has u on an LTE plan. Its been documented that if they have not done that it can cause some issues
Ompalompa287 said:
Thank you, do you have any links regarding the problems reported? I'm in LA, I dont think we have LTE here yet. Also the problems seem to happen only at my house, not even like 1 block down. I know I had full coverage here with no problems on my Captivate. It's just this phone, reception drops to 1 bar, then 5 .... like every 10 seconds, keeps going up and down, I gotta time when to send my texts so they go through lol.
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I727 using XDA App
the captivate is not a 4g or Lte phone...the phone is not trying to switch between 3g to 4g...i think thats the problem with your SII..trying to change from H+ to Lte without succes in an area doesnt have Lte
The only links that I have seen, are for rogers here in Canada.. don't know if that would be of any help to you? While my signal strength is all over the map, I have never had any problems making or receiving calls.
Sent from my SGH-I727R using XDA App
00mred00 said:
Its also worth checking to make sure ATT has u on an LTE plan. Its been documented that if they have not done that it can cause some issues
Click to expand...
Click to collapse
I went ahead and called. It seems the problem is, as everyone suspected, the phone trying to switch from H+ to LTE. the 4G logo seems to change from 4G to 4G (LTE) when it drops reception. Will rooting / roming help stop this? Are there any ways of turning off LTE until they get it fully working?
With regards to the quote above, I currently have Unlimited Data since i got grandfathered in. The guy at the ATT store told me I dont have to change my data plan and I'll keep my unlimited (so i did that). He gave me a new sim which he said "will help give you better reception". Will I still have issues because i dont have the new data plans? I want to keep my unlimited data.
**EDIT**
Just checked on ATTs website and I have "LTE UNL SMT VVMT" data plan.
Thanks in advance for all the feedback guys!
Also, I think its important to note that even if I connect to WiFi, the problem is still there, reception drops and goes up consistently. I've missed countless phone calls and have had to resend a vast amount of texts. I get all my texts together every 4-6 minutes. PLEASE help =/
Did you ever get this resolved. I have the same problem at my house, calls drop frequently and data seems to be not available at times.
Y did u resurrect this thread lol, a new post might have been better. None the less, try the telus KJ3 radio if u don't have LTE in your area, it has really good voice quality, and consistent data rates. If u do have LTE use the new UCLA3 one

T-Mobile US One S data connectivity known issue

T-Mobile acknowledges a known issue with data connectivity on the One S:
http://support.t-mobile.com/docs/DOC-4288
I'm guessing this is the same issue others have reported on the EU One S(wherein the data indicator jumps back and forth between H and 3G and takes ages to load), but the T-Mobile US software, like on all their recent phones, is modded so the indicator will only ever say 4G.
Reviewer has also stated that using EU-based ROMs on the T-Mobile US One S will cause "data bugs," so I'm wondering if this is what he is referring to. If it is, the bug appears to exist in both the T-Mobile US ROM and the EU ROM.
Has anyone had this issue in their T-Mobile US One S? What are your experiences? I've mostly been at home and on wifi since I got the phone a few days ago.
I had an issue with using an EU rom and the data switching back and forth from H and 3G. I reverted to stock nandroid (provided by reviewer) and haven't had an issue with switching between 3G and 4G while at work. As with you I am on Wi-Fi at home so I'm not too sure if I am affected. But I do know that while I was on the EU rom I had drastic drops in signal and network speeds as compared to the stock rom.
Sent from H1S using xda Prem
shinkinrui said:
T-Mobile acknowledges a known issue with data connectivity on the One S:
http://support.t-mobile.com/docs/DOC-4288
I'm guessing this is the same issue others have reported on the EU One S(wherein the data indicator jumps back and forth between H and 3G and takes ages to load), but the T-Mobile US software, like on all their recent phones, is modded so the indicator will only ever say 4G.
Reviewer has also stated that using EU-based ROMs on the T-Mobile US One S will cause "data bugs," so I'm wondering if this is what he is referring to. If it is, the bug appears to exist in both the T-Mobile US ROM and the EU ROM.
Has anyone had this issue in their T-Mobile US One S? What are your experiences? I've mostly been at home and on wifi since I got the phone a few days ago.
Click to expand...
Click to collapse
Interesting. I am using stock US T-mobile, as of yet unrooted because I might take it back. Connectivity is soo spotty. I have not contacted t-mobile yet because I want to collect as much info as possible. It's either 4g or nothing, that's true. And often, it's nothing. My old 3g phone would drop to edge and stay connected. This one will just drop the connection and that happens to often.
I've been using the One S for about a week and zero issues. My residence is only covered by edge but Park City and Salt Lake City I get solid 4g with zero drops or hiccups.
Sent from my HTC VLE_U using XDA
No issues here. I drop from HSPA to Edge in a fringe area but data never stops.
Sent from my HTC VLE_U using xda premium
I don't have any data problems only time I see it low is when I turn it on it goes from 2g 3g to 4g. I haven't encountered any problems yet other then WiFi dropping then reboots when I try to reconnect
Sent from my HTC One S using XDA
I'm affected. Many times when I open the browser to search for something, I'll get the No Data Connection window pop up, even though status bar shows 3G or 4G. I close that, reload the screen, try again and it usually works. It's as though it fails to hook up to the network until it tries a few times.
I dont really have data drop issues. My 2 issues are that it switches from hspda to umts periodically, but that doesnt affect data.
I have a concern though that I feel like reception is poorer on this phone. my gs2 would hold a better signal. In fact on the gs2 i never dropped calls, whereas on the one s i had a few.
Can a radio update fix this?
mikea3000 said:
I dont really have data drop issues. My 2 issues are that it switches from hspda to umts periodically, but that doesnt affect data.
I have a concern though that I feel like reception is poorer on this phone. my gs2 would hold a better signal. In fact on the gs2 i never dropped calls, whereas on the one s i had a few.
Can a radio update fix this?
Click to expand...
Click to collapse
Quite possibly.
u think a radio fix can correct an issue with one handset getting a stronger signal than another? isnt that a hw issue?
mikea3000 said:
u think a radio fix can correct an issue with one handset getting a stronger signal than another? isnt that a hw issue?
Click to expand...
Click to collapse
What? You're comparing two different devices. A radio issue can cause lower signal so a radio update can give you more signal.
seangprice said:
I've been using the One S for about a week and zero issues. My residence is only covered by edge but Park City and Salt Lake City I get solid 4g with zero drops or hiccups.
Sent from my HTC VLE_U using XDA
Click to expand...
Click to collapse
Same here, also in the Salt Lake area... maybe this a regional issue?
Same issue here in Boston. I don't get dropped but the signal goes up and down most of the time.
Sent from my HTC VLE_U using xda premium
I'm not having any issues and I'm getting great data speed
I'm in Louisville ky
Sent from my HTC VLE_U using xda premium
Good god, praise Heysoose H Christ. Finally SOMEBODY acknowledges there's an issue.
---------- Post added at 03:54 PM ---------- Previous post was at 03:53 PM ----------
strker45 said:
I'm not having any issues and I'm getting great data speed
I'm in Louisville ky
Sent from my HTC VLE_U using xda premium
Click to expand...
Click to collapse
I just performed one, and got the delay/interrupt, my results were:
Download: 110kbps
Upload: 710kbps
A previous attempt last week netted 9102 down, 2065 up....that was obviously WITHOUT the bug.
I am near Chicago First let me just say for some reason my reception really never goes past 3 bars and sometimes I have none at all in places the sgs2 would have plenty dont know if this is just me...but man when data is good its phenomenal I have got up to 25mb down and 3 up but the interruptions in reception and data kill that pretty bad..so I am very torn about this phone I hope it isn't hardware related because the EU version has the same bug..
Same here most of the time I only have a max of 3 bars and I noticed sometime when I have all bars when i pick it up I lose a bar or two
Yes, phone does have connectivity issues. I live in New York and my previous phone would never go down one single bar on 4G, except in my job where my 4G goes down to 2 bars.
Now my bars go up and down like waves and jumps from 4G to 3G constantly, and in my job I just get 2G. It really sucks. Let's hope it's fixed with a hardware update and that it's not the actual chip.
Experience is exactly as you specify. Stock Rom always displayed 4g....custom Roms flip between 3g, h and I even saw an e today?!
Although time with stock was limited...I do believe, whether just a label or not, seemed data was faster with stock. Regardless....no complaints.
Sent from my HTC One S using xda premium
I don't think I have ever had a phone with Tmous where this wasn't a problem. I just figured it was T-mobile's network kicking me off so I wouldn't hog all the bandwidth. In other words, every smartphone I have had with tmobile has had this issue.

VRBLI5

Not recommended to flash the modem unless you are in a good 4G area. I clean flashed AOKP M1 ROM flashed VRBLI5 modem . While in good 4G area had no problems as soon as I left (I am a truck driver) my signal and data started acting up. No data or 1x data signal also cell signal very week and a few dropped calls. So I flashed the VRLAHE modem now I got 3G back signal also better.
I think that VRBLI5 is optimized for 4G but this is just my experience.
Sent from my SCH-I535 using xda app-developers app
Thanks for the heads up.
No problem ever since I flashed back to VRALHE modem an hour ago l had no problems with my signal or data. Good 3G n 4G n cell signal. Glad to help.
Sent from my SCH-I535 using xda app-developers app
Excellent. I will check this out.
Lehocki said:
No problem ever since I flashed back to VRALHE modem an hour ago l had no problems with my signal or data. Good 3G n 4G n cell signal. Glad to help.
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
Playing Devil's advocate here, could the bad signal just have been a really crappy area? I'm in the northeast and I know parts of Maine I fluctuate considerably and lose signal all together. Other phones do the same so I know it's not my S3.
So tempted.. I already DL the file!
¤ Sent from The Third Galaxy ¤
"Playing Devil's advocate here, could the bad signal just have been a really crappy area? I'm in the northeast and I know parts of Maine I fluctuate considerably and lose signal all together. Other phones do the same so I know it's not my S3."
Not really as soon as I flashed "HE" modem signal and data returned to normal. As I said I'm a truck driver and in the past year and a half since I got my first android phone there were only 4 or 5 occasions my 3G dropped to 1x and that was only in PA and WV in the mountains. Where I was now in IL on an interstate it should not have happened. VZW has the whole USA covered with 3G. A couple months ago I was driving through WY not a town in a 80mile radius and still had 3G. Believe me I was pleasantly surprised.
Sent from my GT-P3110 using xda app-developers app
New modem is working great for me. Did a speed test and got 28 down and 3 up on the extended network.
Sent from my SCH-I535 using xda premium
Worked fine for me too while I was in a good 4G area the problems started once I left the city. As I mentioned it is probably optimized for 4G . If you are and stay within the city that has 4G you probably not going to c a difference between HE and I5
Sent from my SCH-I535 using xda app-developers app
Lehocki said:
Worked fine for me too while I was in a good 4G area the problems started once I left the city. As I mentioned it is probably optimized for 4G . If you are and stay within the city that has 4G you probably not going to c a difference between HE and I5
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
I usually stay on 3g until I step out of my house or until I go to town. I haven't noticed a difference thus far in my area. I was also in a extremely strong 4g area when I flashed and it changed to 3g without a problem and has the same service I have always had. I'm personally running Paranoid android 2.52.
Sent by one of my many Anthromorphic Personifications
The new radio reflects a better signal for me...all phones act different, so this alarm topic is just your experience.
Lehocki said:
Not really as soon as I flashed "HE" modem signal and data returned to normal. As I said I'm a truck driver and in the past year and a half since I got my first android phone there were only 4 or 5 occasions my 3G dropped to 1x and that was only in PA and WV in the mountains. Where I was now in IL on an interstate it should not have happened. VZW has the whole USA covered with 3G. A couple months ago I was driving through WY not a town in a 80mile radius and still had 3G. Believe me I was pleasantly surprised.
Sent from my GT-P3110 using xda app-developers app
Click to expand...
Click to collapse
That's kinda messed up about your trip thru WY, the parts Maine that don't have any coverage from Verizon have plenty of towns lol.
well i hate to be that guy but i.think your issue is on your end
... lastnight the club where i shoot trap has no lte. my device usually will drop data there. this is the first time i had solid 3g and it even switched down to 1x but data never dropped! also lte signal seems improved aswell. imo this is the best radio to date.
this radio has been an improvement for me. in my office i am lucky to get 3g. this new radio has given me a steady 3g signal all day so far
New radio is working fine for me as well.
Sent from my SCH-I535 using xda app-developers app
Just wanted to add my experience as well. After 24 hours using this radio, I can say that signal is much improved on 1x with data off and LTE had never been this fast for me. Pulled 48 down 20 up this morning here in Hollywood.
Sent from my SCH-I535 using xda premium
On the official release of Miui which has had many reports of data issues. Flashed new radio yesterday, I am in a fringe 4g area, and the handoffs from 3g to 4g seem to be much better for me. Previously after moving into a 3g area, I would have to go into airplane mode in order to get 4g back, now it seems to be switching on its own.
I wish someone would explain the whole rpm thing. Does it need flashed with the modem? Does it need flashed everytime we change the Rom? Do we even bother flashing it if we are not on the stock Rom? Why has there never been an rpm zip with every other modem?
We need answers!
Sent from my SCH-I535 using xda premium
xsteven77x said:
I wish someone would explain the whole rpm thing. Does it need flashed with the modem? Does it need flashed everytime we change the Rom? Do we even bother flashing it if we are not on the stock Rom? Why has there never been an rpm zip with every other modem?
We need answers!
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
ok now bear with me...lol I have been extensively doing some research on this topic. It seems RPM has to do with power management for the radio. This was implemented on the G7 update. I had no clue because I never take OTA's...In order to see the signal improvements the rpm file should be flashed with the latest radios. However nothing negative will occur by not flashing the RPM.zip. I believe this was an attempt to help fix ril issues with data handoffs and spotty 3g signal.
So if you flash just the I5 radio and dont notice any improvements or even worse signal try flashing the rpm.zip and I can about gurantee an improvement will be noticed. I can not believe how much better the 3g to 1x signal and data handoff has improved!! Anybody is more than welcome to chime in and correct me if this is incorrect. There is not much info on this topic as I spent a couple hrs putting bits of information together to come up with this conclusion...hope it helps!
I flashed this new modem/radio,and frankly, I see 4g on my phone more now than I did with the G1 that was on it previously. Everything else works as good, possibly better than before, though I did not take any measurements before flashing.

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