[Q] Bad firmware flash effecting 4G connectivity? - Sprint HTC One (M8)

My M8 has had pefect 4g and 3g connectivity since I got it. It was a replacement for my first one that was horrible at connecting to anything. Over the weekend I noticed 4g not connecting as frequently as it should, in areas supposedly blanketed by lte coverage in my area.
If I toggle airplane mode, 4g connects and usually stays connected, so it can't be a circuit fallback issue. But when I travel away from that tower, it reverts to 3g and almost never reconnects to 4g until I do another airplane mode toggle.
Is it possible I've mucked up something with a firmware flash? I've flashed the harman/kardon firmware early in the week last week, but since these issues I've tried going back to the stock firmware and also the OTA firmware, but the issue remains.

FlowingAway said:
My M8 has had pefect 4g and 3g connectivity since I got it. It was a replacement for my first one that was horrible at connecting to anything. Over the weekend I noticed 4g not connecting as frequently as it should, in areas supposedly blanketed by lte coverage in my area.
If I toggle airplane mode, 4g connects and usually stays connected, so it can't be a circuit fallback issue. But when I travel away from that tower, it reverts to 3g and almost never reconnects to 4g until I do another airplane mode toggle.
Is it possible I've mucked up something with a firmware flash? I've flashed the harman/kardon firmware early in the week last week, but since these issues I've tried going back to the stock firmware and also the OTA firmware, but the issue remains.
Click to expand...
Click to collapse
I'd go to a sprint store and compare behavior of your with one on display.
Some people believe after firmware updates their M8 started active up. But usually it's loss of 3G. But anything is possible.
But I'd get a reference first. 4G will be available on one spot on my drive to work one day and not the next. Not sure if it's bandwidth thing or tower work or what.
Parameters of when to go on to LTE may have changed in firmware. So it's less likely to bounce between 4G and 3G.

Related

N1 - No 3G or HSPA!

Hi-
I have a Nexus One and I am having a problem where if I am in a location where there is HSPA available, then my phone loses 3G and HSPA connection. My phone has a 3G icon, but in the testing menu it shows that is keeps flipping back and forth between HSDPA and UMTS. Also the up arrow continuously flashes, but I don't receive any data back.
When I leave the area with HSPA service and switch to another tower which has regular 3G then my phone works fine. I figure the issue has to do with my phone missing something or having a corrupted file that is not letting it connect to HSPA service.
My phone had no problem connecting to HSPA earlier this week but all of a sudden I am having problems.
Anyone have any ideas?
I'm on vacation in Fort Collins, CO and have been having similar problems with 3G
only showing the up arrown and never downloading. I got sick of it and switched to EDGE for the time being. My wife has an N1 also and it is doing the same thing, so it looks like it's not the phone. I switched over to CM6 which has the 3G and H indicators and it will only download data with the H never the
3G indicator.
Rob
I also have the same problem. When I am on HSDPA my up arrow gets "stuck" and I lose all data connection. Here is a link with others having the same issue. http://forum.androidspin.com/showthread.php?t=2720&page=2
Have a look at your apn settings in menu I had that prob and switched a few this around and got it kinda working
Sent from my Nexus One
my build.prop file was apparently missing the necessary entries in it. I flashed CM6 and now it works again, although my phone now thinks I am in Phoenix instead of Dallas.
Phone was working fine then all of a sudden doesn't work. No change in the settings. Has to be network related.
Starting at around 1AM EST last night 7/11 and running until this moment I have been going back and forth between Service, No Service 3G no 3G, able to place a call and unable to place a call.
My bet is there working on the network with this new HSPA+ roll out. The problem seems to be in markets that are expecting the roll out. I live in Jacksonville Fl. Up until last night I had flawless 3G and Data. It was terribly fast but I had it.
Now over the last 12 hours or so 3g Voice and data has been intermittent with no settings made to the phone.

[Q] AT&T 3G signal fluctuates

Just curious on other peoples opinion/theory.
So while using my HTC One on AT&T the 3G signal jumps around. I assume its two towers one obviously being farther away and the phone doesn't seem to stick with the one that's closer. So if i force the phone to connect to WCDMA (3G/HSPA) no celluar service works on the device. Eventually I switch it back to 2G and then it starts receiving calls/sms etc. I have been to locations in the area where there are full bars of 3G constantly yet the phone fails to connect properly eventually I give up and switch to 2G at some points the phone drops down to GPRS.
On an international HTC 8X it maintains a strong connection to 3G/H+ using the same simcard. Only thing that has changed is the actual device. I've tried literally all the radios available for the HTC one and all have the same result.
If using a T-Mobile simcard and I go into an area that has been refarmed I pick their 3G/H+ just fine.
So it's not the simcard and its not the phone. I've called AT&T and all they do is make me turn off the phone while they resend the signal from the tower (so they say) then thats when the phones sticks to 3G and functions correctly but eventually it stops working and returns to how it was.
Right now AT&T offers the stronger call/sms coverage while T-Mobile doesn't so I'd rather stick with AT&T even if they suck.
So my question is.
Anyone else experiencing or has had this issue before on the HTC one or another device? If those who have had this was it resolved?
Was it a simple device exchange or were you bumped up the change of tech support eventually reaching some one who knew how to fix the issue or atlease gave more then "Please turn the device on/off, it will fix all your problems"

Data connection is suddenly not working

After 2-3 days of not messing with the phone anymore (flashing, putting root apps, etc) my somewhat alright LTE signal has now turned into 3G with no circle around it meaning it's connected to the network, but not actually getting data. It happened while I had the phone in standby for a few minutes, so I can't think of any one app that caused it. Reinstalled rom even after a full wipe.
The strange thing is I will sometimes get a faint signal of 3G which then dissapears within a minute. I did the latest OTA before I flashed my rom so I should have the newest radios and everything. I can't update profile either. My family is getting good signal so I know it's something with my phone. Any ideas?
Happened to me too..I re activated with Hands Free activation to reset the data connection to Sprints network..Only worked twice for me through out the day then the phone was just stuck in the same spot as yours (3G with circle around it). Nothing we did reset the data link to sprints network(cust. svs rep).I brought the phone back to where I bough it and they didn't allow an exchange unless they held the phone over night to test it..I didn't have time for it and everything i hear about the Triband set up Sprint is doing not allowing data while in a call and the growing pains of the network rebuild have worn down on me after 10 years so i had to return the phone and buy it on a network that allowed the phone to operate the way it was meant to..
When I first got the phone, it would hold an LTE signal much better than my m7. Then last night I notice LTE cutting in & out where it was pretty stable before. I check it was trying to connect to Band 26 which is 800 LTE. It might have been from a further away tower. This was the first time I have ever seen Band 26 in my area which is currently being deployed. The constant cutting in & out also drains my battery down. This has nothing to do with my phone but the towers which my home tower has been having issues since last July. For now I set my phone to CDMA only since I have wi-fi at home & work anyway I don't need the phone on LTE. Even when LTE was working on 1900 which was stable, the signal was still pretty week and would drain more batter than a strong 1X signal. Since LTE is data only right now, there is no reason to have the phone prefer LTE when wi-fi is on. With CDMA only it's not bouncing around all over the place.

HTC One M8 reception worse than M7

I just got my new M8 today. Did the update, activated it, did the profile & PRL update, etc.
I am constantly getting the message that I am roaming on data. It seems to go back and forth between roaming and not roaming. Even outside I only get 1 bar of LTE and the LTE signal is a good 10dBvm worse than my old M7. My M7 never switched to roaming in the same location.
Anyone else noticing worse reception on this phone than the old HTC One?
I'm having the same issue.
Sent from my 831C using Tapatalk
I was worried bout the same myself. In the office with the M7, I wan't able to get LTE, but luckily with the M8 I am able too. I would have your phone checked at a corporate Sprint Store to see if it's faulty
kwolf said:
I just got my new M8 today. Did the update, activated it, did the profile & PRL update, etc.
I am constantly getting the message that I am roaming on data. It seems to go back and forth between roaming and not roaming. Even outside I only get 1 bar of LTE and the LTE signal is a good 10dBvm worse than my old M7. My M7 never switched to roaming in the same location.
Anyone else noticing worse reception on this phone than the old HTC One?
Click to expand...
Click to collapse
I had the same issue yesterday when I upgraded my radios to the new version (1.54). I was stuck in 3G roaming at my house which was normally low end LTE service before the upgrade. After flashing the radios I did a Profile and PRL update using WIFI, then restated my M8. After the restart I am back to having LTE coverage floating around -90-95 dBvm. I also notice that if LTE fails to connect swithing airplane mode On/Off helps as well as dialing *18 from the dialer. Hope it helps.
captain008 said:
I had the same issue yesterday when I upgraded my radios to the new version (1.54). I was stuck in 3G roaming at my house which was normally low end LTE service before the upgrade. After flashing the radios I did a Profile and PRL update using WIFI, then restated my M8. After the restart I am back to having LTE coverage floating around -90-95 dBvm. I also notice that if LTE fails to connect swithing airplane mode On/Off helps as well as dialing *18 from the dialer. Hope it helps.
Click to expand...
Click to collapse
I already did the profile/prl updates, and my phone isn't stuck on 3G. It will go 3G roaming, then 3G on sprint, then LTE. Seems to not be able to make up its mind. On my old phone it would usually toggle between LTE and 3G in this area, but NEVER did it go roaming. Even when I'm on WIFI I still get the annoying roaming notification in the notification bar every 5 minutes.
I also noticed my WiFi download speed on wireless AC is significantly worse than my M7. I used to be able to get 70mpbs on a speed test, this phone won't even break 12mbps. When I first turned the phone on it would only work on WiFi for the first 3 seconds after connecting and then it would stop. I had to keep connecting and disconnecting to WiFi to limp the software update download along. After it updated it at least stays connected and working on WiFi, but a lot slower than my old M7.
This phone was purchased on a SWAC account so I'm not sure if a Sprint store (which is 40 minutes away for the nearest one) would swap it for me.
Moved to Q&A...all questions should be posted in Q&A.
Thank You,
BD619

[Q] Shows LTE, only works for a few minutes.

My phone used to work great on LTE, but one day it showed the LTE icon, but I couldn't get it to work. If I toggle airplane mode, then wait for LTE to connect it will work for a few minutes, but then go back to showing the LTE icon but not transferring any data. The phone works fine on cdma only, but I want the strong LTE I used to have. I've been dealing with it for over a month, and other people on sprint with different phones have strong LTE that works fine. I have updated the radio, tried AOSP and sense roms, updated radios, removed and inserted the sim card, flashed an RUU back to completely stock, updated profile and PRL.
On sense roms, I would occasionally get the message "Unable to establish a wireless data connection. LTE: EMM-65535, EHRPD: 65535"
Very frustrating, as 3g speeds in my area are awful, and everyone around me can take advantage of the faster LTE signal. Anyone else having this problem? Is there a solution, or is it a hardware issue?
richyrocket said:
My phone used to work great on LTE, but one day it showed the LTE icon, but I couldn't get it to work. If I toggle airplane mode, then wait for LTE to connect it will work for a few minutes, but then go back to showing the LTE icon but not transferring any data. The phone works fine on cdma only, but I want the strong LTE I used to have. I've been dealing with it for over a month, and other people on sprint with different phones have strong LTE that works fine. I have updated the radio, tried AOSP and sense roms, updated radios, removed and inserted the sim card, flashed an RUU back to completely stock, updated profile and PRL.
On sense roms, I would occasionally get the message "Unable to establish a wireless data connection. LTE: EMM-65535, EHRPD: 65535"
Very frustrating, as 3g speeds in my area are awful, and everyone around me can take advantage of the faster LTE signal. Anyone else having this problem? Is there a solution, or is it a hardware issue?
Click to expand...
Click to collapse
Do you expericne this everywhere, or just in certain places? Are you "side by side" (i.e. in the same area) with your colleagues who have Sprint when they get LTE and you don't?
After nearly a year of strong LTE at our house, we rarely get LTE now and mostly 3G. This started about three months ago. When it first started, I only had an EVO 4G LTE, but we have also since gotten a One, and both phones behave the same. We live within 500 yards on the west side of the tower, according to SignalCheckPro. In fact, I can go outside and see the tower. When we do get LTE, SCP will sometimes indicate that the phone is connected to a tower futher away. If the phones have been inactive for awhile, they will initially show 4G, but quickly switch to 3G if we try any type network access (i.e. web, email, etc). If we go to the east side of that tower, we get strong LTE and 5-10 Mbps transfer speeds on both phones.
I reported this to Sprint a couple of months ago, and got a response that they were doing another phase of upgrades on that particular tower. I reported it again a couple of weeks ago, but got no response. There is a major retail business street on the east side of the tower, so Sprint may have re-focused the signal on the business corridor. I have also noted a couple of other towers in other areas of the city where I work that have this same highly directional behavior, and unfortnately, the places where I have to be are on the wrong side of the towers.
So, you could very well have a phone hardware issue, but it could also be Sprint. If you check other fourms, you will find similar reports of areas losing LTE after having it for some time. Which is why I asked if you can get LTE in some places, and not others. You might consider getting SignalCheckPro to see where you are in relation to the towers. IMO, Sprint's LTE network seems to be messed up in many places.
jbhtexas said:
Do you expericne this everywhere, or just in certain places? Are you "side by side" (i.e. in the same area) with your colleagues who have Sprint when they get LTE and you don't?
After nearly a year of strong LTE at our house, we rarely get LTE now and mostly 3G. This started about three months ago. When it first started, I only had an EVO 4G LTE, but we have also since gotten a One, and both phones behave the same. We live within 500 yards on the west side of the tower, according to SignalCheckPro. In fact, I can go outside and see the tower. When we do get LTE, SCP will sometimes indicate that the phone is connected to a tower futher away. If the phones have been inactive for awhile, they will initially show 4G, but quickly switch to 3G if we try any type network access (i.e. web, email, etc). If we go to the east side of that tower, we get strong LTE and 5-10 Mbps transfer speeds on both phones.
I reported this to Sprint a couple of months ago, and got a response that they were doing another phase of upgrades on that particular tower. I reported it again a couple of weeks ago, but got no response. There is a major retail business street on the east side of the tower, so Sprint may have re-focused the signal on the business corridor. I have also noted a couple of other towers in other areas of the city where I work that have this same highly directional behavior, and unfortnately, the places where I have to be are on the wrong side of the towers.
So, you could very well have a phone hardware issue, but it could also be Sprint. If you check other fourms, you will find similar reports of areas losing LTE after having it for some time. Which is why I asked if you can get LTE in some places, and not others. You might consider getting SignalCheckPro to see where you are in relation to the towers. IMO, Sprint's LTE network seems to be messed up in many places.
Click to expand...
Click to collapse
Yes, most my friends have sprint Iphone 5c's and a few android LTE Phones and live in my area. they all have strong LTE. I'm pretty sure it is a sim card/hardware issue because my phone has been completely stock and unrooted for about 2 weeks now, and the LTE Only worked for the first day. Unfortunately I got the phone on the day it was launched, so my warranty is gone. Unless there is some trick to get it to stay connected. :crying:
richyrocket said:
Yes, most my friends have sprint Iphone 5c's and a few android LTE Phones and live in my area. they all have strong LTE. I'm pretty sure it is a sim card/hardware issue because my phone has been completely stock and unrooted for about 2 weeks now, and the LTE Only worked for the first day. Unfortunately I got the phone on the day it was launched, so my warranty is gone. Unless there is some trick to get it to stay connected. :crying:
Click to expand...
Click to collapse
have you tried updating your profile and prl,
Aldo101t said:
have you tried updating your profile and prl,
Click to expand...
Click to collapse
Yes I tried updating those, and updating the radios. Just wondering, when it was new it would always say the sim card was removed when it really wasn't. Is it possible that it has a faulty sim card? I'm pretty sure the sim card is only used for LTE.
richyrocket said:
Yes I tried updating those, and updating the radios. Just wondering, when it was new it would always say the sim card was removed when it really wasn't. Is it possible that it has a faulty sim card? I'm pretty sure the sim card is only used for LTE.
Click to expand...
Click to collapse
Yeah. Some have removed the .cardcand clean it and put back in. Solved the problem??
Sent from my HTCONE using Tapatalk
Also: you might try ##72786# in dialer and reseting your network to default factory settings.
---------- Post added at 06:31 PM ---------- Previous post was at 06:24 PM ----------
Aldo101t said:
Yeah. Some have removed the .cardcand clean it and put back in. Solved the problem??
Sent from my HTCONE using Tapatalk
Also: you might try ##72786# in dialer and reseting your network to default factory settings.
Click to expand...
Click to collapse
if none of that works i'd see about getting the sim replaced
Aldo101t said:
Yeah. Some have removed the .cardcand clean it and put back in. Solved the problem??
Sent from my HTCONE using Tapatalk
Also: you might try ##72786# in dialer and reseting your network to default factory settings.
---------- Post added at 06:31 PM ---------- Previous post was at 06:24 PM ----------
if none of that works i'd see about getting the sim replaced
Click to expand...
Click to collapse
I just reset the network to factory settings, I'll try and see if it stays connected tomorrow when I go back into town where it's strong. The sim card has been removed and seems to be clean. I can't be the only one having this problem, can I?
richyrocket said:
I just reset the network to factory settings, I'll try and see if it stays connected tomorrow when I go back into town where it's strong. The sim card has been removed and seems to be clean. I can't be the only one having this problem, can I?
Click to expand...
Click to collapse
yeah there where others that had the problem too.

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