Intermittent connectivity issues

sfreemanoh said:

Every so often my M8 will basically become disconnected from the network. This NORMALLY appears when I'm in a low coverage zone, and it's as if my phone just doesn't want to reconnect when I get back into a higher coverage area.

For instance at my gym, I frequently get a weak signal, but it's usually 4G. Sometimes it'll drop to 3G, and then sometimes when I get back into an area of the gym that has 4G coverage my phone will say it's still on 3G. However, there's actually no connectivity at all, and I need to either reboot or toggle airplane mode to get a connection again.

Sometimes (at least 2-3 times in the last week) it happened while, at least to the best of my knowledge, I was in a 4G area (though with weak coverage) the entire time. Again I fixed it each time by toggling airplane.

Has anyone else seen an issue like this? It's frustrating as hell. And more importantly has anyone heard of a fix for this?

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Sevinex said:

Yep, actually I had a thread about this a while back; I tried just about everything (other ROMs, new sim cards, factory resets, the whole shebang) and my only solution so far (if you intend on keeping your current phone) is to completely unroot my phone, along with removing all root-related applications (namely Xposed). It still happens from time to time, but a lot less frequently then when rooted and running Xposed modules. I have a new phone coming in today from Verizon, so hopefully that unit will not have any of these issues... I still am not entirely sure what causes it, though it is definitely exacerbated by Xposed. Hopefully some of this helps? If you have any further questions feel free to ask, either through PM or this here thread.

Sent from my HTC6525LVW using XDA Premium 4 mobile app

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wooddale said:

I am having same did getting new phone help? I think its just crappy radios myself nothing to do with root exposed or anything.

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Sevinex said:

I have a new phone now, and so far I haven't experienced any data connectivity issues. This morning I did notice that my SMS were not sending properly, but that issue has since faded away, so hopefully it was Verizon network based... Anyways, I will try reinstalling Xposed and a couple modules later today (likely Snapshare and the Sense 6 Toolbox) and will report back sometime tomorrow or the next on how it goes. Fingers crossed...

Sent from my HTC6525LVW using XDA Premium 4 mobile app

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wooddale said:

Thanks keep us informed.

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sfreemanoh said:

Every so often my M8 will basically become disconnected from the network. This NORMALLY appears when I'm in a low coverage zone, and it's as if my phone just doesn't want to reconnect when I get back into a higher coverage area.

For instance at my gym, I frequently get a weak signal, but it's usually 4G. Sometimes it'll drop to 3G, and then sometimes when I get back into an area of the gym that has 4G coverage my phone will say it's still on 3G. However, there's actually no connectivity at all, and I need to either reboot or toggle airplane mode to get a connection again.

Sometimes (at least 2-3 times in the last week) it happened while, at least to the best of my knowledge, I was in a 4G area (though with weak coverage) the entire time. Again I fixed it each time by toggling airplane.

Has anyone else seen an issue like this? It's frustrating as hell. And more importantly has anyone heard of a fix for this?

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Sevinex said:

Lol, so after installing Xposed, I suddenly started having issues maintaining a solid 4G connection; 3G works fine, just whenever I do manage to connect to 4G I am unable to use any data (says I am connected to the mobile network, but I do not get any upload or download data movement). Even after removing Xposed and all associated modules, I am still experiencing this problems. I am going in today/Monday to get a new SIM card (hopefully this is what is causing my issues) but goddamn I just cannot seem to catch a break in terms of my phones' data connection. If the above doesn't work I may have to send for another phone, though after having now received three replacements this entire process is getting a little irksome... I really do love this phone, but it seems as if it is my M8 is rejecting my love from every angle.

UPDATE: The new SIM didn't do anything, I still am having 4G issues, so another phone it is...

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biswasd said:

a lot of feedback on the web across multiple carriers of the poor lte signal retention on this phone.....this is starting to sound like a hardware defect or a major "radio" software glitch.

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sfreemanoh said:

Every so often my M8 will basically become disconnected from the network. This NORMALLY appears when I'm in a low coverage zone, and it's as if my phone just doesn't want to reconnect when I get back into a higher coverage area.

For instance at my gym, I frequently get a weak signal, but it's usually 4G. Sometimes it'll drop to 3G, and then sometimes when I get back into an area of the gym that has 4G coverage my phone will say it's still on 3G. However, there's actually no connectivity at all, and I need to either reboot or toggle airplane mode to get a connection again.

Sometimes (at least 2-3 times in the last week) it happened while, at least to the best of my knowledge, I was in a 4G area (though with weak coverage) the entire time. Again I fixed it each time by toggling airplane.

Has anyone else seen an issue like this? It's frustrating as hell. And more importantly has anyone heard of a fix for this?

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berndblb said:

I had the same problem with my new M8 when travelling from/to areas with low or no data coverage back to areas where I knew there was a LTE signal. Only toggling Airplane Mode would make the data reconnect. That problem was solved for me with a new sim card.

I also had very bad data connectivity at home in a major southern California city (best was -105 dBm) whereas I got up to -83 dBm in some rural town in Arizona.
Read trook's posts #34 and up here: http://xdaforums.com/showthread.php?p=53838257
Some of these problems may be connected to the new data service VZW is rolling out.
I would wait a few weeks before ditiching this phone. 'Cause it rocks!!!

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biswasd said:

it has nothing to do with the AWS rollout - i have a Verizon Galaxy S5 sitting right next to my M8 ---- guess what - consistent data speeds on the s5 (15 mbs down)......on the m8 (3-4mbs down) - and the data flucutates and in the signal meter , I'm getting about -6db less on the M8 than the s5.

trust me, i so desperately want to keep this phone, b/c quite frankly, i hate the amoled screen on the s5, but alas, i cant keep a phone that doesn't work well

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berndblb said:

Did you have to do that?! You just ruined my evening! That's really not what I wanted to hear!
The cold hard truth - aaaarghhh. [emoji24]
Now I have to re-think this purchase 'cause I use my phone 80% for data related functions!
But thanks anyway for posting. Even if it hurt...

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biswasd said:

yes - sorry bro - i'm quite disappointed by what i am seeing with my own two eyes as well as all the others across the US and the rest of the world who are experiencing the SAME symptoms. so this is not a verizon network issue --

me thinks its a faulty radio which is causing bad handoffs between 3g and 4g (LTE). once the phone drops down to 3g, it never regains 4g signal for some reason. also, there is the issue of the constant signal fluctuations even when the phone is on LTE...so who knows. maybe combo of bad radio and poor quality antenna module.

i'm not a phone engineer but i have enough common sense and knowledge about phones to know a lemon when i see one......so, yup, i'm keeping the s5 and return the m8 tomorrow under the 14 day guarantee from verizon. shame....

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